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Timken Engineering Manual-Metals Industry Edition

Timken Engineering Manual-Metals Industry Edition

Product catalog summary

Overview: The Timken Engineering Manual for the Metals Industry offers comprehensive guidance on the selection, application, and maintenance of bearings and related products, emphasizing Timken's expertise in metallurgy, friction management, and mechanical power transmission to enhance productivity and equipment uptime.

Lubrication and Sealing: This section covers lubrication fundamentals, including lubricant characteristics and selection for different applications, and discusses various sealing systems and their applications.

Application Challenges and Enhanced Bearing Solutions: Timken provides high-performance bearings to address challenges like contact fatigue, debris, lubrication, corrosion, precision rolling, and high acceleration, offering tailored solutions for demanding environments.

Related Products: Timken offers seals, lubricants, maintenance tools, condition monitoring equipment, housed units, couplings, and precision chain products to support the metals industry.

Bearing Storage, Handling, and Installation: Guidelines for proper bearing packaging, storage, marking, and maintenance are provided, along with techniques for mounting and dismounting roll neck bearings and setting bearings.

Services: Timken offers services such as gearbox repair, bearing reconditioning, chock and roll upgrades, and the MILLTEC™ Rolling Mill Program, along with service engineering and training to support customer needs.

Products and Services: Timken provides a wide range of bearings, including tapered, cylindrical, spherical, thrust roller, and ball bearings, as well as housed units and high-performance solutions like AquaSpexx® and DuraSpexx®.

Overview of Timken Products and Services: Timken offers power transmission components, including seals, couplings, and engineered chains, designed to withstand extreme temperatures and high contamination levels, aiming to protect machinery and minimize downtime.

Seals and Couplings: Timken develops large-bore oil and grease seals and bearing isolators, with Quick-Flex couplings that are durable, require minimal maintenance, and do not need lubrication.

Chains: Timken manufactures precision roller chains for demanding applications, particularly in the steel industry, built to precise specifications for strength and wear life.

Lubrication Solutions: Timken lubricants reduce friction and wear, protecting bearing surfaces from corrosion, offering a variety of lubricants and lubrication delivery devices.

Condition Monitoring and Maintenance Tools: Timken provides condition-monitoring equipment to prevent unscheduled downtime, offering both handheld devices and continuous systems, along with maintenance tools like induction heaters and pullers.

Remanufacturing and Repair Services: Timken offers remanufacture and reconditioning services for bearings and related components, aiming to improve plant efficiency and reduce costs.

Training Programs: Timken provides industry-specific training programs, including on-site customized training, to enhance plant professionals' skills in bearing performance and maintenance.

Catalog Usage and Product Selection: The Timken catalog assists in selecting bearings suited to specific needs, providing dimensions, tolerances, and load ratings, with guidelines for shelf life and storage of grease-lubricated bearings.

Compliance and Safety: Timken products comply with European REACH regulations, and the company provides guidelines for safe handling and installation to prevent injury and equipment damage.

Continuous Casting Process: The continuous casting process involves key components and procedures to ensure slab quality and integrity, including top and bottom rolls, soft core reduction, and cooling systems.

Ladle Turret Bearings: The ladle turret supports the main bearing application, with designs including a single turntable with a slewing ring bearing and a central column with sleeve-attached support arms.

Mold Oscillator Bearings: Mold oscillation prevents steel from sticking to the mold liner, with hydraulic resonant oscillators preferred for their compact design and control flexibility.

Foot Roll and Bender Sections: These sections support the slab beneath the mold, with bearings enduring heavy loads, high temperatures, and contamination.

Slab Support Segments: Bearings must allow for fixed and float positions to accommodate thermal growth and misalignment, with spherical roller bearings commonly used for fixed positions.

Rolling Mill Applications: Rolling mills demand high-performance bearings due to high temperatures, loads, and speeds, with specific types used for backup and work roll positions in both hot and cold mills.

Cold Rolling Process: Cold rolling increases metal strength and hardness but decreases ductility, with annealing and temper rolling used to counteract this.

Temper Mill: Also known as a skin-pass mill, it reduces strip thickness slightly to enhance properties like dimensional accuracy, surface finish, and flatness.

Long Product Rolling: This involves processing cast billets through roughing and finishing mills, with bearing configurations accommodating higher axial loads.

Bearing Solutions: Work roll bearings are smaller and narrower than backup roll bearings, with techniques like roll bending and axial roll shifting used to control strip flatness.

Sealed Roll Neck Bearings: These bearings reduce grease consumption and maintenance costs while improving reliability, featuring integrated seals to prevent contamination and retain grease.

Seal Carrier Design: The seal carrier design features a similar internal design to the standard TQOW bearing but includes separable extended inner rings and main seal carrier rings.

Optional Roll Neck Bearing Features: Variants of the TQOW assembly can be specified for specific applications, with features like spiral bore grooves and reduced assembly width tolerance.

Application Considerations and Bearing Selection: For four-row tapered bearings, quick mounting and removal are essential due to frequent work roll changes.

Roll Neck and Chock Design: Specific undercuts and retaining systems are recommended to accommodate wear and ensure proper fit.

Work Rolls in Long Product Mills: Long product mills typically use a 2-Hi construction, with radial bearings either being four-row cylindrical or two- or four-row tapered roller bearings.

Four-Row Cylindrical Roller Bearings: Timken offers a range of sizes with different cage types, with specific designs to maximize bearing life and facilitate maintenance.

Application Considerations and Bearing Selection: Cylindrical bearings in long product rolling mills are mounted with a tight fit on the roll neck, requiring heating of the inner rings before installation.

Radial Internal Clearance (RIC): Four-row cylindrical roller bearings are available with radial clearances per DIN 620-4, typically using C4 or C3 values.

Lubrication Configuration: Timken bearings can be lubricated using grease, air-oil, oil-mist, or circulating-oil systems, with lubrication grooves and holes or integrated face slots for optimal performance.

Bearing Selection Criteria: Initial selection is based on space availability dictated by roll and chock design, considering parameters like roll neck diameter, roll body size, allowable stresses, and distance between mill screwdowns.

Roll Neck to Roll Body Ratio: Typically around 60%, but can be higher in heavily loaded mills, requiring lighter section bearings or enhanced materials for increased capability.

Backup Chock Section Guidelines: Guidelines apply to all backup roll bearings, with Timken's heavy-duty bearings allowing specific neck-to-barrel ratios and roll turndown percentages.

Roll Neck Compound Fillet Radius: Compound or two-radii fillets are preferred for strength and space efficiency, with specific formulae provided for calculating radii.

Calculating Maximum Roll Neck Bending Stress: Involves determining equivalent neck diameter and effective working length, with specific equations provided for stress calculation.

General Guidelines for Roll Material Selection: Based on maximum bending stress, with specific stress limits for different materials like cast iron, alloy iron, cast steel, and forged steel.

Bearing Solutions: Radial Positions

Dimensional Criteria: Understanding bore and O.D. requirements is essential, with cylindrical roller bearings offering maximized radial capacity and tapered roller bearings accommodating both radial and thrust loads.

Four-Row Cylindrical Roller Bearings: Available in sizes up to 1040 mm bore, used in both hot and cold mills for high-speed and precision capabilities.

RX Configuration: Features two outer rings with an integral center flange, with pin-type cage construction and options for oil-mist nozzle integration.

Four-Row Tapered Roller Bearing with Tapered Bore (TQITS): Tapered bore roll neck assembly with high stability and load sharing, typically using air-oil systems for lubrication.

Sealed Chock-Bearing Concept: The document discusses the TQITSE type bearing, which extends the inboard cone outer rib to improve the running surface accuracy of the inboard chock seal.

Application Considerations for TQITS Bearings: The document outlines the fitting practices for cones, emphasizing the benefits of a stepped bore to equalize contact pressure and reduce installation force.

Tapered Roll Neck Parameters: Specifications for roll neck surface hardness, finish, and cleanliness are provided to ensure optimal bearing performance.

Mounting and Dismounting Tools: Hydraulic ring jacks are used for mounting, while high-pressure hydraulic fluid is used for dismounting the TQITS assembly.

Roll Interchangeability and Lubrication: The document discusses the importance of tight control over cone bore diameter and roll neck size for interchangeability, and recommends air oil as the primary lubrication system.

Roughing Plate and Hot Finishing Mill: The document describes the operation of roughing plate mills and the use of four-row tapered roller bearings in these applications.

Optional Backup Roll Bearing Features: Features such as radial holes for oil lubrication and increased neck diameter for high-load applications are discussed.

Increased Strip Accuracy: The document explains the control systems for strip profile and thickness, emphasizing the role of bearing precision in improving gage accuracy.

Bearing Solutions for Axial Positions: Various bearing options for axial positions are discussed, including spring-loaded TDIK, spacer-type TDIK, and double-directional axial bearings.

Angular-Contact Ball Bearing Assembly: This section covers the use of angular-contact ball bearings for high-speed applications, typically used in pairs to accommodate thrust loads in opposite directions.

Backup Roll Considerations: The document concludes with considerations for backup roll bearings, emphasizing the need for heavy-duty thrust bearings at the fixed side of the mill.

Overview: This document provides detailed technical specifications and considerations for bearing assemblies used in various industrial applications, particularly in mill operations.

1. Bearing Assembly Specifications:

The TDIK assembly includes a double cone and two single cups, designed to absorb external roll thrust in either direction.
Keyways are provided for reversibility to extend bearing life, and fitting practices ensure the thrust bearing absorbs only thrust loads.

2. Locating Bearing for Float Chock:

A thrust bearing is used to locate and retain the chock on the roll end, with deep-groove ball bearings typically providing axial location.

3. Screwdown Systems:

Modern mills use either electromechanical or hydraulic systems for screwdown operations, with hydraulic systems offering faster response times.
Screwdown thrust bearings handle extremely high loads, and bearing selection is based on static capacity.

4. Bearing Solutions for Axial Positions:

Various assemblies like TTHDFLSX and TTHDFLSV are discussed, with design considerations for concave and convex profiles.
Application considerations include bearing cartridge design, race alignment, sealing, and lubrication.

5. Auxiliary Equipment and Gearbox Configurations:

Mill drives consist of speed reducers and pinion stands, with configurations varying from single to double reduction gearboxes.
Single-helical and double-helical gears have different thrust load characteristics, influencing bearing selection and configuration.

6. Application Considerations:

Factors such as operating conditions, fitting practices, lubrication, and high-speed operations are critical for bearing performance.
Operating clearances and the impact of inertial loads on vibration and torque reversals are also considered.

7. Pay-off and Rewind Reels:

Reels are used in strip mills for coiling and uncoiling, with designs like twin-stub and full-face expanding mandrels.
Duty cycles and load analysis are crucial for bearing selection, with preferred arrangements including two-row tapered roller bearings.

Two-Row Tapered Roller Bearings and Cylindrical Roller Bearings: The document discusses the use of two-row tapered roller bearings in fixed positions and cylindrical roller bearings in float positions.

Auxiliary Equipment and Bearing Selection: The document highlights the importance of bearing selection in shears and shear drives, which face challenging loading conditions.

Application Considerations for Shears: Key considerations include operating conditions with rapid speed and load changes, high acceleration and deceleration affecting input shaft bearings, and bearing selection focusing on high-load positions.

Table Rolls: Rolling mills and process lines use rolls supported by various bearings, with spherical and two-row tapered roller bearings being common.

Bearing Life Calculations and Related Analysis: This section covers bearing life calculations, including fatigue life, bearing ratings, applied loads, and advanced analysis.

Summary of Symbols: A comprehensive list of symbols used in bearing life calculations is provided, detailing units and descriptions for various factors affecting bearing performance.

Timken Bearing Ratings and Calculations

1. Timken Rating for One Million Revolutions:
The Timken C1 rating is calculated as C1 = C90 x 3.857, allowing for comparison with other manufacturers' bearings rated for one million revolutions.

2. Bearing Life Calculations:
Timken's C90 ratings are based on a life of 90 million revolutions or 3000 hours at 500 rev/min.

3. Dynamic Axial Load Rating:
The axial load capacity of radial roller bearings is determined by the bearing type and design.

4. Static Load Rating:
For static applications, the maximum permissible load is determined by the maximum contact stress, which should be less than 4000 MPa to avoid deformation.

5. Applied Loads and Bearing Life Analysis:
Bearing life calculations start with determining applied forces and calculating the dynamic equivalent load.

6. Equivalent Dynamic Radial Loads:
The dynamic equivalent radial load (Pr) is calculated as Pr = XFr + YFa, where X and Y are load factors.

Dynamic Equivalent Radial Load Calculations:
For single-row bearings, the dynamic equivalent radial load is calculated based on whether the thrust load is applied to bearing A or B.

ISO 281 Factors:
These factors are used to determine the dynamic equivalent radial load.

Load Sharing in Bearings:
For four-row bearings, the radial load is equally shared between each pair of rows, while the axial load is distributed 40% on one pair and 60% on the other.

Thrust Dynamic Loads:
For spherical thrust roller bearings, the thrust dynamic loads are calculated with Pa = 1.2 Fr + Fa.

Slow Rotating Equipment:
In applications with low rotational speeds, a static analysis is more appropriate due to the lack of a hydrodynamic lubricant film.

Bearing Life Equations:
Bearing life is calculated using the L10 life equation, which considers the dynamic equivalent radial load and rotational speed.

Reliability and Material Life Factors:
The reliability life factor (a1) adjusts the calculated L10 life based on the probability of the bearing reaching a specified life.

Load-Zone Life Factor:
This factor considers the number of rollers supporting the load and the stress cycles experienced by the bearing surfaces.

Load Zone of Bearings
The load zone in a bearing is influenced by internal clearance, structural system stiffness, deflection, and thermal gradients.

Lubrication Life Factor (a3l)
Bearing life is closely linked to lubricant film thickness, which depends on viscosity, temperature, load, speed, and surface finish.

Misalignment Life Factor (a3m)
Misalignment between bearing rings affects bearing life.

Bearing Internal Clearance
Internal clearance affects bearing performance, including fatigue life and heat generation.

Influence of Fitting on Setting
Bearing fitting practices impact internal clearance and performance.

Specifications and Procedures:
The document provides detailed specifications for bearing installation and maintenance, focusing on interference fits and their effects on bearing performance.

Thermal Effects and Bearing Clearance:
It discusses the influence of temperature on bearing settings, highlighting the need to account for thermal expansion during operation.

Advanced Analysis and Bearing Life Calculations:
Timken's advanced analysis tools, including Syber and FEA, are introduced for more accurate bearing life calculations.

Lubrication and Sealing:
The section covers lubrication fundamentals, emphasizing the role of lubricants in minimizing friction, transferring heat, and protecting against corrosion.

Key Recommendations:
- Ensure precise spacer width adjustments in high-speed applications.
- Consider thermal effects when selecting RIC to prevent negative internal clearance.
- Utilize advanced analysis tools for critical applications to optimize bearing life.
- Maintain proper lubrication to enhance bearing performance and longevity.

Lubrication and Bearing Performance

1. Lubrication and Scoring Prevention
Scoring in bearings can occur due to factors like speed, oil viscosity, load, or inadequate lubricant supply.

2. Lambda Ratio (λ)
The lambda ratio is crucial for bearing performance, indicating the lubrication-film thickness relative to surface roughness.

3. Main Lubricant Characteristics
Viscosity: The most critical property, inversely related to temperature.

4. Lubricant Additives
Additives enhance lubricant properties, such as oxidation inhibitors, rust inhibitors, demulsifiers, and extreme-pressure additives.

5. Lubrication Selection
Choosing the right lubricant depends on factors like load, speed, temperature, and environmental conditions.

6. Grease Lubrication
Grease is a semi-solid lubricant with specific properties based on its thickener and base oil.

7. Oil Lubrication
Oil systems, including air-oil and oil-mist, offer better heat dissipation and contamination removal.

8. Regreasing and Maintenance
Proper regreasing intervals depend on temperature, seal efficiency, and contamination.

9. Air-Oil Lubrication Systems
These systems provide reliable oil supply and are environmentally friendly.

10. Oil Quantities
Air-oil systems allow for high oil viscosities and typically consume less oil than oil-mist systems.

Specifications:
The document outlines various lubrication systems for bearings, focusing on air-oil, oil-mist, oil-bath, oil-splash, and forced-feed oil systems.

Procedures:
For air-oil systems, the oil quantity is determined by the bearing surface area, and the oil level must be controlled to prevent overheating.

Norms and Recommendations:
Proper oil levels are crucial to avoid heat generation from oil churning.

Heat Generation and Dissipation:
Heat is primarily generated between rolling elements and raceways.

Contaminants and Sealing:
Contaminants like abrasive particles and water can significantly reduce bearing life.

Figures and Diagrams:
Figures illustrate proper oil levels, oil-mist generation, and lubrication system layouts.

Surface Roughness and Seal Seat Preparation
The document specifies a surface roughness (Ra) of 0.25 to 0.50 μm for seal seats.

Static and Non-Contacting Seals
Static seals, such as O-rings, are recommended for sealing between non-rotating parts.

Sealing Systems for Roll Necks
Robust sealing is crucial in roll neck applications, especially in wet rolling environments.

Auxiliary Equipment Sealing
In less contaminated environments, simpler sealing arrangements suffice.

High-Performance Bearings
Timken offers enhanced bearing solutions for demanding environments, addressing challenges like heavy loads, high speeds, and contamination.

Contact Fatigue and Solutions
Contact fatigue, leading to spalling, is a common issue.

Debris Challenges
Debris can cause premature bearing damage by creating dents that act as stress risers.

Debris Solutions
Timken's debris-resistant bearings are designed to outperform standard bearings in environments with significant debris.

Lubrication Challenges and Solutions
Inadequate lubrication can lead to various damage conditions, including roller-end scoring and total bearing seizure.

Corrosion Solutions
Timken offers AquaSpexx® and Thin-Dense-Chrome (TDC) bearings to combat water-based corrosion.

Precision Rolling
Precision in roll neck bearings is critical for product quality in cold rolling operations.

High Acceleration Challenges and Solutions
Cages in roller bearings maintain uniform rolling-element spacing.

Specifications and Procedures
The document provides detailed information on the specifications and procedures for selecting and maintaining Timken products, including bearings, seals, lubricants, and maintenance tools.

Lubricants
Timken offers a range of lubricants designed for various industrial applications, including rolling mills and power generation equipment.

Seals
Timken provides a variety of industrial seals suitable for extreme conditions, offering resistance to temperature, pressure, and chemicals.

Maintenance Tools
The document outlines various maintenance tools, including hydraulic pullers and induction heaters.

Condition Monitoring Equipment
Timken offers condition monitoring products to maximize uptime and safety in industrial operations.

Housed Units
Timken's housed units, including split-block plummer blocks and pillow blocks, are designed for durability and ease of maintenance.

Overview: The document provides detailed information on Timken's engineering solutions, focusing on housed units, couplings, and precision chain products.

Housed Units: Timken offers a range of housed units designed for heavy industrial operations.

Sealing Options: The document outlines different sealing options, including labyrinth seals made of DuPont™ Teflon® for high-speed applications.

Maintenance and Safety: Proper maintenance and handling practices are critical for the safe operation of housed units.

Quick-Flex® Couplings: Timken's Quick-Flex® couplings are designed for metal manufacturing and processing applications.

Precision Chain Products: Timken offers a range of precision chain products engineered to withstand high temperatures and heavy loads.

Conclusion: Timken's engineering solutions are designed to meet the demands of various industrial applications, providing enhanced performance, durability, and reduced maintenance costs.

Roller Chain Specifications and Features
The document outlines the specifications and features of various roller chains, including the standard roller chain, Extended Life CHP® series, Silver Shield CR® series, and HZ riveted and cotter series.

Conveyor Chain Design Considerations
For designing a chain for conveyor applications, the document lists necessary information such as conveyor type, chain travel method, material type and weight, conveyor speed and length, and lubrication requirements.

Maintenance and Safety Warnings
Proper maintenance and handling practices are emphasized, with warnings against using individual chain components, reusing damaged chains, and installing new chains on worn sprockets.

Bearing Storage, Handling, and Installation
This section covers bearing packaging, storage, marking, and maintenance guidelines.

Bearing Marking and Identification
Timken bearings include markings for identification and traceability, such as manufacturing source, country of origin, date code, and serial number.

Roll Neck Maintenance Guidelines
The document provides guidelines for roll neck bearing maintenance, emphasizing the importance of proper handling, cleaning, inspection, and installation.

Inspection and Minor Repair
During inspection, bearings should be checked for unusual wear, nicks, or spalls.

Roll Neck Maintenance Guidelines
Chock bores, roll neck seats, and shoulders are critical contact surfaces that require regular maintenance to ensure optimal bearing performance.

Bearing Storage, Handling, and Installation
Proper storage, handling, and installation of bearings are crucial to prevent damage and ensure longevity.

Heating and Cooling Guidelines
Various methods for heating bearings include oil-bath heating, infrared lamp heating, dry industrial oven heating, induction heating, and direct flame heating.

Inspection and Rework of Chock Bores
Regular inspection and measurement of chock bores are essential to maintain the mill's common center line.

Roll Neck Inspection
Roll necks using tapered roller bearings require regular inspection for wear and size.

Tables and Figures
The document includes tables providing guidelines for permissible wear limits on chock bores and roll necks.

Roll Neck Diameter Wear Limits
This section outlines the wear limits for roll neck diameters when mounted with cylindrical roller bearings.

Reconditioning and Maintenance Guidelines
When reconditioning roll necks, it is crucial to maintain the minimum outside diameter of the cylindrical roller bearing inner rings.

Gasket and Shim Selection
Guidelines are provided for selecting compressible gaskets or shim packs to ensure proper clamping of the outer bearing rings.

Bolt Torque Specifications
The final bolt torque must align with the mill builder's recommendations, considering the loading conditions and the number of bolts.

Mounting and Dismounting Roll Neck Bearings
The document describes procedures for mounting and dismounting roll neck bearings.

Bearing Lubrication
Instructions are provided for lubricating bearings during mounting, whether using grease or circulating oil.

Measuring Tools for Tapered Roll Necks
Tools such as sine bars and ring gauges are recommended for checking roll neck taper and size.

Mounting Procedures for TQITS Bearings
The document outlines the hydraulic ring jack method for installing TQITS bearings.

Specifications and Procedures:
1. Mounting Bearings: Use a hydraulic pump to mount bearings, ensuring pressure does not exceed the shear stress limit of the split-hinged ring backing shoulder.

Four-Row Cylindrical Roller Bearings:
1. Configurations: Available in RY, RYL, and RX types, used in roll-neck backup positions.

Mounting and Dismounting Procedures:
1. Inner Rings: Clean and dry components, thermally expand inner rings to a maximum of 120°C (248°F) before mounting.

Thrust Bearing Procedures:
1. TTDWK/TTDFLK Bearings: These double-acting thrust bearings are mounted with radial bearings, using metal shims or gaskets for axial clamping.

Warnings and Recommendations:
1. Heating Precautions: Avoid direct contact with heating sources or flames on bearings.

Installation and Maintenance Procedures
1. Prepare the housing and components for mounting.

Types of Bearings and Their Adjustments
Adjustable Bearings: Include tapered roller, angular-contact ball, and spherical thrust bearings.

Bearing Setting Techniques
Bearings operate with internal clearance or preload, known as bearing setting.

Multi-Row Tapered Roller Bearing Setting
Multi-row tapered roller bearings are preset with spacers.

Example of MEP Calculation
For a specific bearing assembly, the BEP is adjusted by calculating the loss of endplay due to tight fits.

Controlling Bearing Assembly Setting
Regular checks are necessary to ensure the BEP remains accurate.

Tapered Four-Row Assembly Measurement
Annual checks are recommended for four-row assemblies.

Bearing BEP Readjustment
Adjustments are made by regrinding spacer widths when the BEP increases significantly.

Cylindrical Roller Bearing Setting
Four-row cylindrical bearings have interchangeable inner and outer race assemblies.

Influence of Bearing Fit on RIC
The tight fit of inner rings affects the RIC, which is adjusted based on the application requirements.

Specifications and Procedures:
The document discusses the impact of diametric increase on the radial internal clearance (RIC) of bearings due to tight fits.

Services Offered:
Timken offers a range of services including gearbox repair, bearing reconditioning and reclamation, and upgrades for chocks and rolls.

Gearbox Repair:
Timken provides repair services for various gearbox models, emphasizing the importance of regular maintenance and inspection to prevent breakdowns.

Bearing Reconditioning and Reclamation:
The document details the advantages of bearing reconditioning and reclamation, such as cost reduction, improved product quality, and reduced lead times.

Indicators for Bearing Repair:
Signs that a bearing may require attention include excessive operating temperatures, vibration, and abnormal lubricant levels.

Timken Repair Expertise:
Timken's repair services are supported by highly trained engineers and advanced equipment, ensuring high-quality repair and reclamation services for various bearing types.

Overview: The document outlines the capabilities and services offered by Timken in the maintenance and repair of industrial equipment, particularly focusing on bearings, chocks, and rolls used in steel and aluminum mills.

Specifications and Procedures:

Timken's repair operations are ISO-compliant, utilizing high-quality laser and gaging equipment for precise measurements.
New components are manufactured to Timken's quality standards using qualified bearing-grade steels.
Heat treatment and metallurgy support are provided to ensure components meet original specifications.
Computer-aided design tools are used for reconditioning and repairing competitor products to OEM standards.

Integrated Repair Program:

Timken offers a comprehensive program integrating maintenance and repair of mill-stand equipment, including bearings, chocks, and rolls.
Services include chock and roll upgrades, rebuilding, and maintenance to enhance equipment performance and longevity.

Chock and Roll Services:

Capabilities include producing new or remanufactured equipment for industrial applications, with services like disassembly, cleaning, inspection, repair, and reassembly.
Reconditioning services aim to make chocks stronger than new, offering cost savings compared to purchasing new equipment.

Roll Overlays and Repair:

Timken provides roll repair and overlay operations to extend the life of rolls, offering significant cost savings over new purchases.
Mill Clad Technology is used to apply wear- and corrosion-resistant alloys to rolls, enhancing performance and reducing costs.

Service Engineering:

Timken service engineers optimize bearing performance and provide on-site support to reduce maintenance costs and increase uptime.
Online monitoring systems are available for critical assets to prevent unexpected failures.

MILLTEC® Rolling Mill Program:

This program manages roll shop operations, minimizing downtime and offering customized service packages to improve profitability.
Services include assembly, disassembly, periodic monitoring, and maintenance of chock assemblies, among others.

Training Programs:

Timken offers various training programs to enhance bearing handling and maintenance skills, including rolling mill training and industrial maintenance training.
Certification programs are available to verify adherence to proper maintenance practices.

Conclusion: Timken provides a wide range of services and training programs to improve the reliability and performance of industrial equipment, focusing on bearings and related components.

Catalog excerpts

Timken Engineering Manual-Metals Industry Edition-1

Metals Industry Edition Timken engineering manual

Open the catalog to page 1

TIMKEN ENGINEERING MANUAL

Open the catalog to page 2

TIMKEN ENGINEERING MANUAL METALS INDUSTRY EDITION INDEX TIMKEN ENGINEERING MANUAL

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Timken Engineering Manual-Metals Industry Edition-4

TIMKEN grow stronger with timken GROW STRONGER WITH TIMKEN Every day, people around the world count on the strength of Timken. Our expertise in metallurgy, friction management and mechanical power transmission helps them accelerate improvements in productivity and uptime. We supply products and services that can help keep your operations moving forward, whether you need drive train kits for commercial vehicles, durable housings for bearings in dirty environments, couplings that avoid metal-to-metal contact between motors and gearboxes, repair services for bearings and gearboxes, roller chain...

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Timken Engineering Manual-Metals Industry Edition-5

TIMKEN increase your equipment uptime INCREASE YOUR EQUIPMENT UPTIME In addition to high-quality bearings and mechanical power transmission components, we provide valuable integrated products and services. For example, we offer repair services and equipment monitoring equipment that can alert you to problems before they impact your uptime. Additionally, we offer a broad selection of seals, premium lubricants, lubricators, couplings and chain to keep your operations moving smoothly. Our technology centers in the United States, Europe and Asia help pioneer tomorrow’s innovations with extensive...

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Timken Engineering Manual-Metals Industry Edition-6

TIMKEN metals innovator metals innovator Today, metal processing equipment handles heavier loads, faster speeds and greater output than ever before. Finished product quality requirements increase, while across the industry manufacturers continue to place a very high premium on equipment uptime and performance. As the leader in friction-management and power-transmission solutions for the metals industry, Timken helps metals operators improve their equipment’s performance and uptime. We accomplish this by providing custom solutions – from bearings that can stand up to harsh environments to condition...

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Timken Engineering Manual-Metals Industry Edition-7

TIMKEN products and services products and services We offer equipment builders and operators one of the most extensive friction-management product and service portfolios in the industry. Bearings We provide a broad range of bearing designs and configurations for use in steelmaking vessels, caster segments, work rolls, backup rolls, screwdown systems, mill drives, pinion stands, coilers, table rolls, and auxiliary equipment. Bearing types include: ••Tapered roller bearings – Tapered roller bearings are uniquely designed to manage both thrust and radial loads and are available in single- and multi-row...

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Timken Engineering Manual-Metals Industry Edition-8

TIMKEN products and services High-Performance Bearing Solutions Timken provides the metals industry with a variety of high-performance bearing solutions, including Timken® AquaSpexx®, DuraSpexx® and thin dense chrome bearings for corrosion protection. Our debris-resistant bearings are ideal for contaminated and/or marginal lubrication conditions. Timken manufactures precision roller chain that are designed to meet demanding steel industry applications. We build chains to precise specifications for strength and maximum wear life. The offering includes a complete line of roller chain, attachment...

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Timken Engineering Manual-Metals Industry Edition-9

TIMKEN products and services Condition Monitoring A constant awareness of your mill equipment’s condition can help avoid unscheduled and costly downtime. Timken offers a full line of condition-monitoring equipment including handheld devices and continuous monitoring systems. Our range of monitoring systems meet the various needs of your mill from simple alarms to complex data collection. These products allow you to detect and correct problems before they cause damage or total system shutdown. Maintenance Tools Timken maintenance tools may extend bearing life by facilitating proper installation,...

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Timken Engineering Manual-Metals Industry Edition-10

TIMKEN how to use this catalog • shelf life and storage of grease-lubricated bearings and components HOW TO USE THIS CATALOG We designed this catalog to help you find the bearings best suited to your specifications. Timken offers an extensive range of bearings and accessories in both imperial and metric sizes. For your convenience, size ranges are indicated in millimeters and inches. Contact your Timken sales engineer to learn more about our complete line for the special needs of your application. This publication contains dimensions, tolerances and load ratings, as well as engineering sections...

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Timken Engineering Manual-Metals Industry Edition-11

TIMKEN shelf life and storage of grease-lubricated bearings and components European Union, Timken can sell and provide only those lubricants and greases that are registered with ECHA (European CHemical Agency). For further information, please contact your Timken engineer. STORAGE Timken suggests the following storage guidelines for our finished products (bearings, components and assemblies, referred to as “products”): ••Unless directed otherwise by Timken, products should be kept in their original packaging until they are ready to be placed into service. ••Do not remove or alter any labels or...

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Timken Engineering Manual-Metals Industry Edition-12

TIMKEN shelf life and storage of grease-lubricated bearings and components WARNING Failure to observe the following warnings could create a risk of serious injury. Proper maintenance and handling practices are critical. Always follow installation instructions and maintain proper lubrication. Warnings for this product line are in this catalog and posted on www.timken.com/en-us/products/warnings/Pages/default.aspx. CAUTION Failure to follow these cautions may result in property damage. If hammer and bar are used for installation or removal of a part, use a mild steel bar (e.g., 1010 or 1020 grade)....

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Timken Engineering Manual-Metals Industry Edition-13

popular bearing types in the METALs industry Popular bearing types in the metals industry The following applications are covered in this section: ••Steelmaking. ••Continuous casting. ••Rolling mill stands. ••Radial bearings. ••Thrust bearings. ••Auxiliary equipment. TIMKEN ENGINEERING MANUAL

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