| Features & Benefits: |
- Fast Disengagement: Breaks free in 1-3 ms to protect drive components and reduce downtime.
- 7 Models: Provides a variety of load connection options, including 5 shaft coupling and 2 pulley/gear hub versions, for maximum design versatility.
- 4 Disengagement Designs: Available in single position, multi-position, freewheeling, or load holding designs.
- Zero Backlash: Patented ball & detent design assures no play, providing exact positioning and precise rotary motion.
- Low Inertia: Ideal for servo or ball screw drive applications requiring quick acceleration.
- Adjustable Settings: A wide torque range is available on each model, which can be field adjusted for the optimal setting.
- Disengagement Detection: An actuation ring can be sensed, with a separate proximity switch, for automated machine shut off.
- Low Residual Torque: Only 2.5% residual torque, after disengagement, reduces torque limiter wear.
- Non-Standard Applications: Modifications, custom designs, and different materials, including stainless steel, are available upon request.
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Product Line Overview: Models SK1 - SKP - SK2 - SK3 - SK5 - ES2 - ESL
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Model SK1 - Torque Limiter Safety Coupling with Conical Clamp or Clamping Hub
(14 sizes with rated torque from 0.1-2800 Nm)
Design Description: A hub design for mounting pulleys, sprockets, or gears. Shaft connection is by standard conical clamping hub or single screw split clamping hub, depending on size.
Bore Diameters: Metric or inch bores from 4-100 mm, or 0.1875-3.875 inches. Keyways are not available on these models.
Temperature Range: From as low as -30° C to as high as +120° C in standard version (3.6° F to 270° F). High temperature options available.
Sizes: SK1-1.5, SK1-2, SK1-4.5, SK1-10, SK1-15, SK1-30, SK1-60, SK1-150, SK1-200, SK1-300, SK1-500, SK1-800, SK1-1500, SK1-2500
Application Example:
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Model SKP - Torque Limiter Safety Coupling with a Pure Key Connection
(14 sizes with rated torque from 0.1-2800 Nm)
Design Description: A hub design for mounting pulleys, sprockets, or gears. Shaft connection is by hollow bore with keyway.
Bore Diameters: Metric or inch bores from 4-100 mm, or 0.1875-3.875 inches. Keyway sizes must be specified.
Temperature Range: From as low as -30° C to as high as +120° C in standard version (3.6° F to 270° F). High temperature options available.
Sizes: SKP-1.5, SKP-2, SKP-4.5, SKP-10, SKP-15, SKP-30, SKP-60, SKP-150, SKP-200, SKP-300, SKP-500, SKP-800, SKP-1500, SKP-2500
Application Example:
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Model SK2 - Torque Limiter Safety Coupling with Clamping Hub for Direct Drives
(14 sizes with rated torque from 0.1-1800 Nm)
Design Description: A shaft coupling design providing angular, axial, and parallel misalignment compensation, with a single screw split hub shaft connection design.
Bore Diameters: Metric or inch bores from 3-80 mm, or 0.125-3.125 inches. Optional keyway reduces maximum bore capacity.
Temperature Range: From as low as -30° C to as high as +120° C in standard version (3.6° F to 270° F). High temperature options available.
Sizes: SK2-1.5, SK2-2, SK2-4.5, SK2-10, SK2-15, SK2-30, SK2-60, SK2-80, SK2-150, SK2-200, SK2-300, SK2-500, SK2-800, SK2-1500
Application Example:
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Model SK3 - Torque Limiter Safety Coupling with Conical Clamp for Direct Drives
(10 sizes with rated torque from 5-2800 Nm)
Design Description: A shaft coupling design providing angular, axial, and parallel misalignment compensation. With a conical clamping hub shaft connection.
Bore Diameters: Metric or inch bores from 10-100 mm, or 0.5-3.875 inches. Keyways are not available.
Temperature Range: From as low as -30° C to as high as +120° C in standard version (3.6° F to 270° F). High temperature options available.
Sizes: SK3-15, SK3-30, SK3-60, SK3-150, SK3-200, SK3-300, SK3-500, SK3-800, SK3-1500, SK3-2500
Application Example:
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Model SK5 - Torque Limiter Safety Coupling with Clamping Hub Press-Fit Connection
(12 sizes with rated torque from 0.1-850 Nm)
Design Description: A unique two piece coupling design for "blind" applications where access to tightening screws is difficult or impossible. Provides zero backlash transmission along with angular, axial, and parallel shaft misalignment compensation.
Bore Diameters: Metric or inch bores from 3-62 mm, or 0.125-2.375 inches. Keyways are available, but will significantly reduce bore capacity.
Temperature Range: From as low as -30° C to as high as +120° C in standard version (3.6° F to 270° F). High temperature options available.
Sizes: SK5-1.5, SK5-2, SK5-4.5, SK5-10, SK5-15, SK5-30, SK5-60, SK5-80, SK5-150, SK5-300, SK5-500, SK5-800
Application Example:
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Model ES2 - Elastomer Insert Jaw Torque Limiter Safety Coupling with Clamping Hub Press-Fit Connection for Direct Drives
(7 sizes with rated torque from 2-900 Nm)
Design Description: A more economical jaw coupling design, with elastomer insert for vibration damping. Shaft connection via single screw split hubs. Provides zero backlash along with angular, axial, and parallel misalignment compensation.
Bore Diameters: Metric or inch bores from 6-75 mm, or 0.25-2.875 inches. Keyways are available, but will reduce bore capacity.
Temperature Range: See insert specification chart below.
Sizes: ES2-10, ES2-20, ES2-60, ES2-150, ES2-300, ES2-450, ES2-800
Application Example:
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Model ESL - Economy Class Elastomer Insert Jaw Torque Limiter Safety Coupling with Clamping Hub Press-Fit Connection
(5 sizes with rated torque from 9-200 Nm)
Design Description: Economy torque limiter is pre-set to a single release value. Ball bearing design eliminates ratcheting wear. Elastomer insert jaw coupling provides zero backlash along with angular, axial, and parallel misalignment compensation.
Bore Diameters: Metric or inch bores from 6-32 mm, or 0.25-1.25 inches. Keyways with set screws are standard.
Temperature Range: See insert specification chart below.
Sizes: ESL-5, ESL-10, ESL-20, ESL-60, ESL-150
Application Example:
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Installation & Maintenance
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Coupling Insert Options, Temperature Ranges, and Stiffness Ratings:
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The elastomer inserts are made of thermoplastic polyurethane (TPU), in a variety of shore values. To provide different stiffness and vibration damping characteristics, optional Hytrel® material can be offered for higher temperature applications.
The inserts are pre-stressed during assembly which provides zero backlash, more consistant load sharing, and improved restoring forces for precise positioning and repeatability.
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Type A
Standard
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Type B
High Stiffness
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Type C
Low Stiffness
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Type D
Electrically Conductive
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Type
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Shore
Hardness
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Color
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Relative
Damping
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Temperature
Range
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Properties
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A
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98 Sh A
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Red
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0.4 - 0.5
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-30° C to +100° C
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High Damping
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B
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64 Sh D
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Green
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0.3 - 0.45
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-30° C to +120° C
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High Torsional Stiffness
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C
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80 Sh A
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Yellow
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0.3 - 0.4
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-30° C to +100° C
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Very High Damping
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D*
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92 Sh A
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Black
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0.3 - 0.45
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-10° C to +70° C
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Electrically Conductive*
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* Due to the electrically conductive properties of the insert, electrostatically charging of the coupling is prevented. This eliminates sparks during normal operation in explosive areas. Technical data is available upon request.
The values of the relative damping were determined at 10 Hz and 20˚C.
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Compensates for Misalignment:
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The elastomer insert jaw coupling can compensate for axial, lateral (parallel), and angular misalignment. This aids in assembly and reduces load stress on drive bearings. It is important to consider the maximum values highlighted in the catalog to avoid premature wear of the elastomer element.
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Lateral Misalignment
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Angular Misalignment
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Axial Misalignment
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Ordering Examples & Part Number Definitions:
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Models SK1 and SKP:
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Models SK2, SK3, and SK5:
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Model ES2:
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Model ESL:
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| Series SK - Torque Limiting Safety Couplings - Download Catalog
Series ST - Heavy Duty Torque Limiter - Download Catalog
Series EK - Elastomer Insert Jaw Couplings - Download Catalog
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| Sample Applications: |
Automation Equipment
CNC Machining Centers
Converting Machinery
DC Motors
Industrial Robots
Machine Tools
Printing Machinery
Servo Motors
Sheet Metal Fabricating Machinery
Textile Machinery
Woodworking Machinery
and more... |
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