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Pfaff Silberblau
Compendium Screw Jacks

Compendium Screw Jacks

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Compendium Screw Jacks

Product catalog summary

Installation Suggestions

Horizontal Installation: Standard screws are available up to 6m, with longer screws provided in sections. Intermediate bearings and travelling nuts are necessary if critical screw speed is exceeded.
Design Configurations: Two main types: Configuration type 1 with clamped screw and linear traversing drive axis, and Configuration type 2 with rotating screw and travelling nut.

Service Life and Guidelines for Use

Service Life: Pfaff-silberblau worm gear screw jacks have a minimum service life of 500 operating hours if used according to the manual.
Corrosion Protection: Options include special coatings and rust-free materials.
Dirt Protection: Standard leakproofing with rotary lip seals and optional protective covers for extreme environments.

Precision Ratings

Axial and Lateral Play: Axial play does not affect positioning accuracy under one-side load. Lateral play can be reduced with a second guide ring.
Tooth Profile Play: Varies depending on unit size and configuration, with specific values for worm and bevel gear configurations.

Special Operating Areas

Special configurations for underwater use, explosive areas, and contaminated environments, with options for non-toxic lubricants and corrosion protection.

Dimensioning of Worm Gear Screw Jacks

Flow Diagram: Step-by-step guide for selecting gear size, checking tensile and compression loads, and determining configuration type.
Manual and Motor Operation: Details on required starting torque and considerations for high lifting speeds.

Permitted Operating Settings

Guidelines for lateral force, drive capacity, and dynamic/static load configurations.

Dimensioning of Lifting Systems

Flow Diagram and Example: Process for selecting and configuring lifting systems, including motor and screw jack selection.

Overview: The document provides detailed technical specifications and configurations for Pfaff-silberblau worm gear screw jacks and quick-lifting screw jacks, covering both single drive units and multi-screw lifting systems, highlighting mechanical and electrical synchronization methods.

Specifications: Outlines the use of IEC flange configurations (B14 or B5) for coupling, and describes the versatility of the screw jacks in various applications, emphasizing precise configuration for optimal performance.

Procedures: Details the configuration process for multi-screw lifting systems, including the selection of appropriate bevel gear boxes and the use of pillow blocks to enhance speed-dependent shaft length.

Norms and Standards: References compliance with BGV C1 (VBG 70) and VBG 14 standards for safety in applications such as theatre stages and lifting platforms.

Recommendations: Includes avoiding lateral forces to extend the service life of supporting nuts, using anti-turn devices, and ensuring proper mechanical lift limitations.

Structural Configurations: Details various structural configurations, including SHE, MERKUR, HSE, and SHG ranges, each with specific design features, lifting capacities, and input speeds.

Key Data from Schematics: Includes schematic views illustrating different drive system layouts and configurations, emphasizing the importance of torque distribution and synchronization in multi-screw systems.

Technical Specifications and Procedures

Screw Efficiency Ratings: Efficiency ratings for various screw types, including steel/bronze lubricated screws.
Critical Screw Turning Speed: Dependent on diameter, length, and bearing arrangement, with formulas for calculating critical speed.
Ball Screw Specifications: Standard dimensions and load ratings for ball screws, with specific configurations available upon request.
Permitted Lateral Force on Screws: Impact of axial force, screw diameter, and length on permitted lateral force.
Permitted Radial Force on Drive System: Radial forces on the drive shaft influenced by toothed or chain wheels.
Dimension Plans for SHE Range: Detailed dimension plans for various configurations of the SHE range.
Recommendations and Best Practices: Use of anti-turn devices to prevent twisting and ensure correct linear movement.

Overview: Provides detailed technical data and dimension plans for accessories related to screw jacks, focusing on the SHE and MERKUR range.

Specifications: Lists dimensions for different sizes of screw jacks, including mechanical and inductive limit switches.

Procedures: Outlines the use of worm gear screw jacks in applications like theatre stages and lifting platforms, emphasizing compliance with safety regulations.

Safety Features: Highlights the importance of safety nuts, anti-drop systems, and mechanical safety brakes.

Configurations: Various configurations detailed, including standard, telescopic, and swivelling setups.

Limit Switches: Availability of mechanical and inductive limit switches for all sizes.

Dimension Plans: Detailed dimension plans for different sizes and configurations.

Recommendations: Consider direction of main stress and mounting position when using safety nuts.

Overview: Provides detailed specifications and configurations for Pfaff Silberblau's worm gear screw jacks, focusing on safety features and dimension plans for various types and sizes.

Specifications: Outlines the design and safety features of worm gear screw jacks, including anti-drop systems and mechanical safety brakes.

Safety Nut Configurations: Two main configurations: short and long safety nuts.

Dimension Plans: Detailed dimension plans for the MERKUR and HSE ranges.

Key Features: Importance of correctly fitting safety nuts to handle tensile and compression forces.

Applications: Examples include the use of HSE high-performance worm gear screw jacks for elevation movements.

Additional Information: References additional resources for further technical details and configurations.

Guide Rings and Screw Jacks Overview

Specifications: Various components and configurations for guide rings and screw jacks.
Dimension Plans: Detailed dimension plans for different sizes and types of screw jacks.
Special Travelling Nuts: Dimension plans for special travelling nuts.
Mounting Positions and Ordering Details: Provided for different ranges.
Bevel Gear Boxes: Covers bevel gear boxes, detailing structural configurations, project planning, and dimensioning.
Project Planning and Technical Information: Guidelines for gear dimensioning and selection based on operating performance and torque.

Flexible Couplings

Absorb impact and vibration, protecting worm gear screw jacks, bevel gear boxes, and motors.
Accommodate small angular, radial, and axial shaft displacements.
Technical specifications include color coding for flexible spiders, operating temperature ranges, and dimensioning requirements.
Various sizes available, each with specific nominal torque, angle displacement, and material options.

Flexible Overload Couplings

Limit drive torque to protect mechanisms from overloads and malfunctions.
Torque transferred via wear-resistant, oil-proof, and temperature-protected friction linings.
Available in MKR, MKE, and MKS ranges, with specific torque limits and rotary speed specifications.
MKE and MKS configurations include electrical shut-off features for safety.

Connecting Shafts

Link drive-system elements, dampen vibrations, and compensate for displacements.
Can be used up to critical speed without pillow blocks, with options to extend length using pillow blocks.
Different configurations cater to various speed ranges and operational requirements.
Technical specifications include nominal torque, operating temperature, and dimensioning guidelines.

Order Codes

Structured to specify range, size, length, and hub drill-hole dimensions for both couplings and connecting shafts.

Overview: Provides technical specifications and guidelines for the installation and operation of worm gear screw jacks, focusing on their ability to perform swivelling and tipping movements.

Swivelling and Tipping Movements: Drive elements must be secured at two points and allowed to move, using swivel plates or articulated heads.

Product Ranges:

MERKUR Range: Provides dimensions for sizes 0 to 5.
SHE Range: Lists dimensions and maximum load capacities for sizes 0.5 to 25.
HSE Range: Includes dimensions and load capacities for sizes 32 to 100.1.

Swivel Mounting Bases: Allow for swivelling and tipping movements, with specifications provided for various sizes.

Motor Mounting Flanges: Requirements for direct motor mounting using IEC flanges and flexible couplings.

Pillow Blocks: Use of DIN 736-standard pillow blocks for intermediate bearing support.

Lubrication Systems: Discusses automatic lubricant dispensers for continuous lubrication of lifting screws and worm gears.

Accessories: Includes additional components like hand wheels and flange bearings.

Technical Specifications: Specifications of a function-indicating system with a transparent plastic housing and an electromechanical operating system.

Central Lubricating Systems: Recommended for multi-screw lifting systems or difficult access to worm gear screw jacks.

Synchronization Control: Describes electronic synchronization control for multi-screw lifting systems.

Limit Switches: Mechanical and inductive limit switches detailed for use in normal and emergency shut-off of worm gear systems.

Control Units: Pfaff-silberblau offers conventional contactor control units and PLC controls for lifting systems with three-phase motors.

Electrical Monitoring Devices: Covers shut-down monitors, rotation monitors, and load monitors for tracking and preventing imbalanced operation in lifting systems.

Linear Motion Products: Overview of further linear motion products, including electromechanical linear actuators, screw rams, high-performance actuators, and telescopic lifting columns.

General Information: Links to product information, certifications, and a download center for corporate information, product descriptions, and CAD data.

Catalog excerpts

Ausgabe E Compendium Screw Jacks 08/2012 040056336 COLUMBUS McKINNON Engineered Products GmbH Ofce Heilbronn Ochsenbrunnenstraße 10 74078 Heilbronn/Germany Phone +49 7131 2871 10 Fax +49 7131 2871 11 [email protected] www.alltec.de eest!, Augsburg COLUMBUS McKINNON Engineered Products GmbH Headquarters Am Silberpark 2 - 8 86438 Kissing/Germany Phone +49 8233 2121 777 Fax +49 8233 2121 805 [email protected] www.pfaff-silberblau.com Compendium Screw Jacks www.pfaff-silberblau.com

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MOTION TECHNOLOGY Columbus McKinnon Engineered Products GmbH The brands Pfaff-silberblau and ALLTEC Antriebstechnik are positioned under the strong umbrella of COLUMBUS McKINNON Corporation as COLUMBUS McKINNON Engineered Products GmbH. This unique constellation enables us to combine outstanding technologies, components and solutions depending on specific customer requests. Pfaff-silberblau and ALLTEC Antriebstechnik‘s portfolios with both brands‘ wide range of products complement each other to form a comprehensive range of high-end, electromechanical components for linear motion technology....

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Screw Jack Technology Overview of chapters Useful information Project planning Screw jacks Bevel gear boxes Lifting screw protective covers Couplings and connecting shafts Accessories Overview further linear motion products General informations

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Screw Jack Technology 2.7 Special areas of application 18 2.8 Dimensioning of worm gear screw jacks 19-21 2.9 Permitted oerating settings 21-22 2.10 Dimensioning of lifting systems 23 2.11 Schematic drive system layout 24-26 3.2 Configuration type 1 - Configuration type 2 31 3.5 SHE range dimension plans 67-80 3.6 MERKUR range dimension plans 81-88 3.7 HSE range dimension plans 89-98 3.8 SHG range dimension plans 99-107 3.9 Special travelling nuts dimension plans 108-110 3.10 Mounting positions, shaft/attachment side 111-112 4 Bevel gear boxes 115-131 4.5 Ordering details for KA / KV and NORMA...

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Screw Jack Technology Extract from our catalogue Merkur range Standard worm gear screw jacks SHE and cubic MERKUR elements for standard applications HSE high performance worm gear screw jacks for highlydemanding dynamic applications SHG quick-lifting screw jacks for extremely high-speed lifting operations Special lifting elements configured to customer-specific requirements Special configurations Control units Connecting shafts Swivel plates Lifting screw protective covers Bevel gear boxes Pillow blocks Limit switches Accessories for lifting elements and screw lifting systems

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Screw Jack Technology Application Examples Manufacturer’s illustrations: VERTEX ANTENNENTECHNIK GmbH Parallel kinematics as drive system of a radio-astronomic receiver unit, consisting of 6 HSE high performance worm gear screw jacks with a lift of 3,500 mm. The system is used for precise positioning of several radio telescopes which are installed on one platform. Manufacturer’s illustration: Mero Airporttechnik High performance worm gear screw jacks for adjusting the height of aircraft maintenance platforms.

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Screw Jack Technology Application Examples Scissors elevating platform with swivelling configuration HSE high performance worm gear screw jack, configuration type 1, synchronized as tandem drive via connecting shaft. HSE high performance worm gear screw jack, special configuration for an elevation movement from 0 °C to 90 °C of an 11,1 m antenna. Manufacturer’s illustration: SBS Bühnentechnik GmbH Multi-screw lifting system (HSE high performance worm gear screw jacks) with safety device according to with BGV C1 (VBG 70) for adjusting hall platforms in the Culture Centre in Frankfurt/Oder. Synchronization...

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Screw Jack Technology Three-axis functioning model Schematic view 2.2 Basculement Horizontal displacement Schematic view 2.2 • 2 x type 2 worm gear screw jack • Swivelling consoles • Electric motor Schematic view 1.1 • 1 x type 1 worm gear screw jack • Coupling • Connecting flange • Frequency-controlled electric motor Schematic view 4.1 • 4 x type 1 worm gear screw jack • Bevel gear boxes • Connecting shafts • Couplings • Electric motor

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Useful information Useful information Improving on existing trends in order to shape the future. Flexibility is the number-one requirement where a spontaneous ability to spot trends and convert them into useful developments is concerned. Pfaff-silberblau and ALLTEC Antriebstechnik make full use of their international technological expertise to set their own benchmarks in this fast-developing market. In the specific field of drive engineering, increased automation and ease of operation are in tune with the ever-greater importance given to the precise control and monitoring of lifting, lowering,...

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Useful information 1.1 System solutions Drive system layout We can supply precise, reliable configured drive units, connecting shafts, bevel gear boxes, motors etc. that conform both to current industrial-machine legislation and standards and to your exact function requirements. Engineering Your proposals become our objectives where project planning and construction support for special individual configuration and calculation methods conforming to EN 1570, EN 280, EN 1756, EN 1493 (VBG14) and BGV C1 (VBG 70) are concerned. Ask your technical adviser about our construction support services. Control...

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Project planning 2.4.3 Items requiring regular lubrication 16 2.6.3 Tooth profile play 17 2.6.4 Screw lead error 17 2.7 Special operating areas 18 2.8 Dimensioning of worm gear screw jacks 19-21 2.8.3 Manual operation for lifting elements 20 2.8.4 Motor drive for lifting elements 20 2.8.5 Adjustment and stopping accuracy 21 2.9 Permitted operating settings 21 -22 2.10 Dimensioning of lifting systems 23 2.11 Schematic drive system layout 24-26 2.11.1 Single drive unit 24 2.11.2 Multi-screw lifting system 25

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Project planning 2.1 List of formulae Abbr. Measuring unit Designation Lead angle Self-locking during shutdown*: 2,4° < w < 4,5° Lifting system efficiency rating Worm gear screw jack efficiency rating Number of load cycles Dynamic load rating Static load rating Pitch diameter Duty ratio Dynamic axial force (= lifting force) Static axial force (= retention force) Transmission ratio Service life Input speed Output speed Power rating Screw lead Surface pressure x sliding speed Permitted surface pressure Time Drive torque Output torque (= screw torque) Starting torque Lifting speed Vibrations and...

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Compendium Screw Jacks

Compendium Screw Jacks

Catalog excerpts

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