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Torque limiting couplings

Torque limiting couplings
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Torque limiting couplings

Product catalog summary
Overview: The document provides comprehensive specifications and applications for the DELTA Series DA and DB torque limiting couplings. These couplings are designed to prevent high shock loads by limiting torque, with adjustable settings ranging from 0.5 to 23,000 Nm. They are characterized by long life due to minimal wear and protective finishes.
Specifications:
  • Torque settings range from 0.5 to 23,000 Nm with stepless adjustment.
  • Surface protection includes galvanized and yellow cromatized finishes.
  • Asbestos-free friction discs are available, with rust and acid-resistant versions.
  • Special needle bearing options are offered.
  • DELTA DA RKC Torque Limiters operate between -20°C and +250°C, with a maximum of +350°C.
  • DELTA DB Torque Limiters offer torque protection up to 1360 Nm and are zinc plated.
Applications:
  • Suitable for recycling and materials handling equipment, power transmission equipment, textile machines, automatic equipment, door and gate drives, belt drives, and general mechanical design.
  • Designed to protect against overload and allow for axial displacement, making them versatile for various industrial applications.
Types of Torque Limiters:
  • Standard: For general power transmission equipment.
  • With Sprocket: Customizable for specific applications.
  • MAX: Suitable for wide drive parts and multiple sprockets.
  • With Spidex: Offers overload protection with torsional flexibility.
  • With Dentex: Provides torsionally rigid coupling with flexibility for deviations.
  • With Chain Coupling: Suitable for high-temperature areas.
  • DELFLEX: Allows for misalignment and provides shock and vibration dampening.
Design Considerations:
  • Disc spring layers can be single, double, or triple, affecting wear and application suitability.
  • Special adjustment nuts are required for low torque ranges and high revolutions.
  • Bushing length is calculated based on the thickness of the drive part and friction disc.
Technical Details:
  • Maximum revolutions and torque values are specified for each DELTA size.
  • Dimensions and configurations are provided for different types and sizes of torque limiters.
Certifications:
  • ISO certified and ATEX certificated to directive 94/9/EC requirements.
Procedures: Instructions for ordering and specifying the correct type and size of coupling are provided, with examples of order codes to ensure accurate specification.
Standards and Recommendations:
  • Use sprockets ground on both sides for optimal torque adjustment.
  • Material and hardness specifications for sprockets are emphasized to prevent misalignment and ensure efficient operation.
Key Data from Tables:
  • Detailed dimensions and torque specifications for each coupling size, including bore sizes, maximum torque, and allowable misalignment.
  • Information on the number of adjustment screws and the dimensions of the driving and mounting parts.
Critical Information: The document highlights the importance of selecting the correct size and type of coupling based on the application's torque requirements and operational conditions, stressing the need for proper installation to maintain performance and prevent damage.
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Catalog excerpts

Torque limiting couplings-1

TORQUE LIMITING COUPLINGS Quality Products for Mechanical & Fluid Power

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Torque limiting couplings-2

an excellence in engineering contact jbj product list TORQUE LIMITING COUPLINGS Torque settings from 0.5 to 23,000 Nm, stepless adjustable torque, long life due to little wear and protective finishes make these torque limiting couplings a good choice to prevent high shock loads. Asbestos free friction discs, rust and acid resistant versions available and the ability to change torque settings even when assembled. Special needle bearing options available. Visit www.jbj.co.uk/Torquelimiters.html for further details or our on-line pdf catalogue or speak to our jbj Techniques Limited technical office....

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Torque limiting couplings-3

Torque Limiting Couplings Sliding Hubs and Safety Clutches, Series DA Types of Torque Limiters and Applications Description DELTA Series DA » Torque settings available from 0.5 to 23.000 Nm. » Recycling equipment. » Stepless adjustable torque. » Materials handling equipment. » Long life due to very little wear. » power transmission equipment. » Surface protected by galvanizing and yellow cromatizing. » Textile machines. » Transmission motors. » General power transmission equipment. DELTA Series DA » Torque Limiter with sprocket as unit. » Automatic equipment » Sprockets with number of teeth and...

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Torque limiting couplings-4

Torque Limiting Couplings DELTA Torque Limiter Series DA » Torque Limiters up to 23.000 Nm. » Standard version galvanized and yellow cromatized. » Limitation of torque prevents high shock loads. » Adjustable torque settings. » Friction discs free of asbestos. » Standard bushing for extended durability. » Change of torque settings, even if assembled. » Rust and acid resistant version available on request. » Special version with needle bearing available on request. Parts of the DELTA Torque Limiter Series DA Friction disc Centre sliding bush Disc spring Pressure ring Safety plate Adjustment bolts...

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Torque limiting couplings-5

Torque Limiting Couplings DELTA Torque Limiter Series DA Disc Spring Layers For torque limiters three different layers of disc springs are possible. a) Disc springs in single layer for torque limiters DA 00 to DA 8 b) Disc springs in two layers for torque limiters DA 00 to DA 8 c) Disc springs in three layers for torque limiters DA 1 to DA 5 If case c) is used, the width of the driving part is reduced and it should only be used when the dimensions of the construction are limited. Special adjustment unit is necessary. Special adjustment nuts The DELTA DA torque limiter 0 to 5 requires in the lowest...

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Torque limiting couplings-6

Torque Limiting Couplings DELTA Torque Limiter Series DA dimensions Number of adjustment screws Number of adjustment screws Number of adjustment screws Torque disc spring [Nm] Pilot bore Width of driving part b1 * Dimension d1, produced for bore H8. ** Only to be used when design has limited dimensions. Disc spring Width of mounting part

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Torque limiting couplings-7

Torque Limiting Couplings DELTA Series DA with Sprocket Pilot bore * The width of the driving part is reduced. Disc spring layer

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Torque limiting couplings-8

Torque Limiting Couplings Selection of Sprocket Wheels For best torque adjustment it is recommended to have the sprocket ground on both sides. Sprocket wheel – Pitch x Width 1/2" x 5/16" » Sprockets for roller chains DIN 8187 ISO R606B, sprockets for roller chains DIN 8188 on request. » When using double or triple sprockets the smallest number of teeth should be chosen 1 to 2 teeth larger. » Number of teeth marked with x have to be turned down evenly on both sides or have to be turned out (see also width of torque limiter). Note: When installing the sprocket the bushing has to be fitted. Length...

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Torque limiting couplings-9

Torque Limiting Couplings DELTA DA MAX. » Torque Limiter designed for wide drive parts in long version. » Suitable for double and triple sprockets, timing belt pulley, V-belt pulley. » Available as package unit with sprocket, V-belt, and timing belt pulley. DELTA DA max . assembled with double sprocket as package available. Pilot bore * Dimension d1 manufactured for bore H8. ** Only to be used when design has limited dimensions. Disc spring layer Width of driving part b

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Torque limiting couplings-10

DELTA Series DA with Spidex® Torque Limiting Couplings For details of SPIDEX® couplings, including permitted values for axial, radial and angular deviations, see yellow, Pump Drive Components catalogue, pages 4 to 10: www.jbj.co.uk/PDF/PumpDriveComponents.html DELTA DA with Spidex® Coupling » Torque Limiter for protection against overload between two shafts. » Torsionally flexible torque limiter with allowance for axial displacement. » Elements available in different shore hardnesses. Size Size torque coupling limiter Pilot bore Order example: DELTA DA Disc spring layer Bore limiter side (d2)...

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Torque limiting couplings-11

DELTA Series DA with Dentex® Torque Limiting Couplings For details of DENTEX® gear coupling, including permitted values for axial, radial and angular deviations, see yellow, Pump Drive Components catalogue, pages 26 to 32: www.jbj.co.uk/PDF/PumpDriveComponents.html DELTA DA with Dentex® Coupling » Torsionally rigid torque limiting shaft to shaft coupling. » Large axial, radial and angle flexibility due to double universal joints. » Axially assemble. Order example: DELTA DA Disc spring layer Bore coupling side (d)

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Torque limiting couplings-12

Torque Limiting Couplings DELTA Series DA with Chain Coupling RKC DELTA DA RKC Torque Limiter couplings are strong and uncomplicated overload protections for the connection of two shafts. They consist of a normal torque limiter with sprocket built in and an additional sprocket with hub. The two Displacement Radial Angle [Degree] sprockets are connected with a double roller chain type DIN 8187 ISO R606B, tight but slightly elastic. The two ends of the chain are connected with a connecting link. DELTA DA RKC Torque Limiters are used as overload protection when a small parallel or angle deviation...

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