Series G

Series G
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Series G

Product catalog summary
Overview: The document provides a comprehensive technical overview of Series G Industrial Reducers, designed for various mechanical drive applications across industries such as food, energy, mining, automotive, aerospace, and marine propulsion. These reducers handle up to 1,860kW and 165,000 Nm.
Product Range: Series G includes parallel shaft helical units and right angle shaft bevel/helical units, offering 8 sizes with ratios from 6.3:1 to 315:1, ensuring high load capacities, efficiency, and reliability.
Design Features: Key features include profile ground helical gears, high surface finish for quiet operation, and modular design for part interchangeability. Units can be mounted horizontally or vertically, with options for hollow bores and backstops for non-reversing drives.
Compliance and Certification: Products comply with the ATEX Directive for use in explosive atmospheres, with certification available for standard gearboxes and geared motors.
Technical Specifications: Details include unit designations, design features, lubrication, cooling, service factors, mechanical and thermal ratings, input and output shaft options, and handling instructions.
Selection and Maintenance: Gear unit selection involves comparing actual loads with catalogue ratings, using service factors to calculate equivalent loads. Guidelines for mechanical and thermal service factors, lubrication requirements, and cooling options are provided.
Additional Features: Series G gear units are made with high-quality materials for durability and include features like horizontal split case design for maintenance ease, optional paint systems for extreme conditions, and various cooling methods.
Shock Load Ratings: Shock loads are categorized based on the type of prime mover and the number of starts/stops per hour, with specific rating factors for different load conditions.
Thermal Ratings and Service Factors: Thermal ratings indicate the gear unit's heat dissipation ability. Exceeding these ratings can lead to lubricant breakdown and gear failure. Cooling options and service factors for ambient temperature, altitude, and air velocity are outlined.
Selection Procedure: A step-by-step guide for selecting the appropriate gear unit includes determining the gearbox ratio, mechanical service factor, mechanical output torque capacity, and checking thermal capacity.
Lubrication: Specifies types and quantities of lubricants required for different unit sizes and configurations, emphasizing correct oil grade and levels to prevent overheating and leakage.
Unit Handling and Shaft Rotations: Instructions for handling parallel shaft units, including output and input shaft positions and rotation directions. All units are reversible except when fitted with a backstop.
Specifications: Outlines shaft configurations, including single and double extensions, and right-angle units, with standard and heavy-duty options for metric and inch shafts.
Procedures: Instructions for calculating overhung and axial loads on shafts, emphasizing component positioning to reduce stress and prolong life.
Standards and Recommendations: Highlights the importance of adhering to specified load capacities and provides factors for adjusting bearing life calculations.
Key Data from Tables: Tables provide dimensions for input and output shafts, permissible overhung and axial loads, and bending moment capacities for agitator units.
Agitator Applications: Provides axial thrust load values for various unit sizes and output speeds, with higher values allowed after consulting application engineers.
Series G - Parallel Shaft Units: Details moments of inertia for different unit sizes and reduction types, exact gear ratios, and mechanical ratings at various input speeds.
Key Tables and Data: Includes axial thrust load table, moments of inertia table, and mechanical ratings tables.
Right Angle Shaft Units: Focuses on input power and output torque across various nominal ratios and speeds, with data organized by series and input RPM.
Specifications: Lists input power and output torque for different unit sizes and configurations, highlighting performance differences between triple and quadruple reduction units.
Thermal Ratings: Provided for right-angle shafts under different cooling conditions, assuming operation at 25°C ambient temperature and 95°C maximum bulk oil temperature.
Cooling Options: Outlines various cooling options and their impact on thermal ratings, emphasizing appropriate selection based on operational requirements.
Shrink Disc Device: Ensures a secure connection between the gear unit and the driven shaft using a friction-based device.
Cooling Coils: Can be fitted to all unit types, with connections for water inlet and outlet pipes, suitable for various water types.
Backstops: Externally mounted backstops for non-reversing drives, located on the helical pinion shaft.
Torque Arms: Available for all shaft-mounted units, recommended for high inertia drives to absorb shocks.
Motorized Dimensions: Provides detailed dimensions for motorized units, including parallel and right-angle shaft units.
Shipping Specifications: Details on unit mass and volume, excluding lubricant, cooling fans, or coils.
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Catalog excerpts

Series G-1

Series G Industrial Reducers Technical Up to - 1,860kW / 165,000 Nm Industrial Reducers CG-2.00GB1211

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Series G-2

Serving an entire spectrum of mechanical drive applications from food, energy, mining and metal; to automotive, aerospace and marine propulsion, we are here to make a positive difference to the supply of drive solutions. Worm Gear units reduction types Parallel angle helical bevel helical geared motors & reducers Right angle helical bevel helical geared motors & reducers Screwjack worm gear unit Helical parallel shaft & bevel helical right angle drive gear In-line helical geared motors & reducers Worm gear unit Large helical parallel shaft & bevel helical right angle drive units Roloid Gear Pump...

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Series G-3

ATEX Compliance Assured Total compliance with the ATEX Directive safeguarding the use of industrial equipment in potentially explosive atmospheres is assured for users of our geared products. Certification is available for standard gearboxes and geared motors with badging displaying the CE Mark and the Ex mark, name and location of the manufacturer, designation of series or type, serial number, year of manufacture, Ex symbol and equipment group/category. ATEX directive 94/9/EC (also known as ATEX 95 or ATEX 100A) and the CE Marking Directive are enforced in all EC member states. Compliance is...

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Series G-5

CONTENTS PAGE Explanation and use of Ratings and Service Factors- 5 - 7 Unit Handings and Shaft Rotations- 11-12 Standard Shaft Sealing Arrangements- 13 Overhung & Axial Loads on Shafts- 19-20 Parallel Shaft Units Mechanical Ratings - Input Power / Output Torque- 27 - 31 Dimension Sheets - Speed Reducers - 33 - 36 Right Angle Shaft Units Mechanical Ratings - Input Power / Output Torque- 41 - 45 Dimension Sheets - Speed Reducers - 47 - 52 Hollow Output Shaft with Shrink Disc - 54 Cooling Coil Connections- 56 Dimension Sheets - Geared Motors - 60 - 61

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Series G-6

GENERAL DESCRIPTION Series G gear units are available in parallel shaft helical units and right angle shaft bevel/helical units in double, triple and quadruple reduction gear stages having a maximum output torque of The modular design and construction of the Series G offers many engineering and performance benefits including a high degree of interchangeability of parts and sub assemblies. This in turn provides considerable economies of production whilst maintaining the highest standard of component integrity. Adding to the range of power transmission geared motors this product takes advantage...

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Series G-7

UNIT DESIGNATIONS THIS PAGE MAY BE PHOTOCOPIED ENTER THEIR ORDER 6,7,8- NOMINAL OVERALL RATIO <- 26 for parallel shaft units 40 for right angle units |~H~| - HORIZONTAL PARALLEL SHAFT UNIT |~V~| - VERTICAL PARALLEL SHAFT UNIT HORIZONTAL RIGHT ANGLE UNIT VERTICAL RIGHT ANGLE UNIT METRIC SOLID SINGLE EXTENSION METRIC SOLID DOUBLE EXTENSION ■ METRIC SOLID SINGLE EXTENSION (REVERSIBLE) METRIC SOLID DOUBLE EXTENSION (REVERSIBLE) METRIC AGITATOR WITH DROP BEARING HOUSING METRIC TOWER WITH EXTENDED BEARING HOUSING INCH SOLID SINGLE EXTENSION INCH SOLID DOUBLE EXTENSION INCH SOLID SINGLE EXTENSION (REVERSIBLE)...

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Series G-8

DESIGN FEATURES Shaft Mounted Units Shaft mounted units can be mounted on the driven machine shaft extension and connected to the foundation by a torque arm, supplied as an optional extra. Additionally, unit feet are available for mounting on a baseplate with motor and coupling, the complete assembly being mounted on the driven machine shaft extension and connected to the foundation by a torque arm. Shaft mounted units are fitted with a 'shrink disc' device to provide positive clamping on the driven machine shaft extension. It is positioned on the input side of the gear unit. Shaft mounted units...

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Series G-9

DESIGN FEATURES High quality alloy case hardening materials provide long life wear resistance and fatigue strength. Profile ground single helical gears and hard finished spiral bevel gears ensure high standards of accuracy, surface finish and quiet running characteristics. Helical gears are fitted in parallel shaft units. Units with shafts at right angles incorporate spiral bevel and helical gears. Standard gearcases are of rigid cast iron construction with modern styling, special cases can be supplied as SG iron or fabricated steel. Horizontal split case design for ease of maintenance. Gearcase...

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Series G-10

AND ASSOCIATED RATING FACTORS Gear unit selection is made by comparing actual loads with catalogue ratings. Catalogue ratings are based on a standard set of loading conditions, whereas actual load conditions vary according to type of application. Service Factors are therefore used to calculate an equivalent load to compare with catalogue ratings, i.e. Equivalent Load = Actual Load x Service Factor Mechanical and Thermal Service Factor must be considered:- Mechanical Service Factors Fm and Fs Thermal Service Factors Ft, Fd, Fh and Fv Mechanical ratings and service factors Fm and Fs Mechanical...

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Series G-11

AND ASSOCIATED RATING FACTORS M = Moderate shock load H = Heavy shock load Driven Machine brew kettles-continuous mash tubs-continuous scale hopper-frequent Clay working clay working machinery M Driven Machine cutter head drives H rotating, swing or slew 1~ tracking, drive wheels 1~ cooling towers light, small diameter U Food industry Laundry washers Line shafts driving processing other line shafts U Lumber industry Driven Machine planer feed chains M planer floor chains M planer tilting hoist M re-saw merry-go-round small waste small waste tipple hoist conveyor M tipple hoist drive M Machine...

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Series G-12

AND ASSOCIATED RATING FACTORS Thermal ratings and service factors The Thermal ratings are a measure of the gear units ability to dissipate heat. If they are exceeded the lubricant may overheat and breakdown, resulting in gear failure. Thermal ratings are given on page 32 for parallel shaft units and page 46 for right angle shaft units. The following choices are ii) Unit fitted with fan cooling iii) Unit fitted with water cooling coil iv) Unit fitted with cooling coil and fan Catalogue thermal limitations are based on the unit operating continuously in an environment with an ambient temperature...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.