What the SICK KUP-1010-W Spring Coupling Solves

The SICK KUP-1010-W is a spiral spring shaft coupling with two 10 mm bores that connects an encoder shaft to a drive shaft while absorbing misalignment. It handles a nominal torque of 1.5 N·m and operates from –30 °C to +120 °C, making it a dependable link in mission-critical motion feedback loops.

In oil and gas automation, shaft misalignment is a common source of encoder failure. Vibration, thermal growth and imperfect mounting all push shafts out of line. This unit addresses this pain point directly: its spring-steel body flexes to compensate for offset while transmitting rotary position accurately. For engineers sourcing vfd parts and feedback components, this coupling protects the encoder bearing and extends service life.

Key Features and Technical Specifications

This unit belongs to the SICK shaft adaptation series, designed for encoder mounting in demanding environments. Each feature below targets a specific reliability concern.

• Bore diameter (encoder side, D1): 10 mm (+0.05) for a precise fit on the encoder shaft.
• Bore diameter (drive side, D2): 10 mm (+0.05) to match the drive shaft.
• Coupling type: Spring coupling that flexes under misalignment.
• Material: Spring steel 1.0600 (nickel-plated) with zinc die-cast hubs for corrosion resistance.
• Nominal torque: 1.5 N·m (150 Ncm) to handle typical encoder loads.
• Max. speed: 3,000 rpm maximum for high-speed feedback applications.
• Operating temperature: –30 °C to +120 °C (per datasheet) for wide process coverage.
• Axial offset compensation: max. ±1.0 mm to absorb thermal expansion.
• Radial offset compensation: max. ±1.5 mm to tolerate mounting misalignment.
• Angular offset compensation: max. ±5° to correct shaft angle errors.
• Fastening: Set screws M5 × 6, DIN 916 (2×) for secure clamping.
• Dimensions: 50 mm length × Ø 17 mm outer diameter.

The combination of 1.5 N·m torque and 3,000 rpm speed makes this coupling suitable for encoder feedback on motors and gearboxes. Its spring-steel construction provides the restoring force needed to return the coupling to center after deflection. Unlike rigid couplings, This unit prevents bearing loads that accelerate wear.

Installation and Setup for Reliable Performance

Proper installation is critical to realizing the coupling's misalignment compensation. First, verify that both shafts are 10 mm in diameter and clean. Then slide the coupling onto the shafts and tighten the two M5 set screws evenly. Do not exceed the rated offsets: ±1.0 mm axial, ±1.5 mm radial and ±5° angular. Exceeding these limits will reduce service life and may cause vibration.

Because the coupling is nickel-plated, it resists mild corrosion. However, in washdown or salt-spray areas, additional protection may be needed. Always follow the encoder and drive manufacturer's alignment procedures. For mission-critical installations, check runout with a dial indicator after tightening.

Maintenance and Troubleshooting

Inspect the coupling periodically for wear, especially in high-vibration environments. Look for cracks in the spring steel or loose set screws. Since the coupling compensates for misalignment, it may mask developing shaft problems; therefore, check alignment at each maintenance interval. Operating temperature should stay within –30 °C to +120 °C; overheating can soften the spring steel and reduce torque capacity.

If the encoder signal becomes erratic, inspect the coupling for fatigue or slipping. A worn coupling can introduce backlash, causing position errors. Replace the coupling if offset compensation is no longer effective. Keep spare unit units on hand to avoid downtime during vfd replacement or servo motor replacement projects.

Compatibility and Integration

This unit is designed for SICK encoders with 10 mm shafts, but its 10 mm/10 mm bore configuration also fits other brands with matching shaft sizes. It serves as a mechanical interface between the encoder and the driven shaft. When integrating into a drive system, confirm that the torque and speed ratings exceed your application's demands. This coupling is often used in vfd parts packages where encoder feedback is required for motor control.

For servo motor replacement, the coupling allows quick adaptation without custom machining. Its spring design accommodates minor misalignment that occurs during reassembly. Always verify shaft diameters and keyway requirements before installation.

Frequently Asked Questions

What is the operating temperature range of the SICK unit?

The SICK unit operates from –30 °C to +120 °C per datasheet, suitable for many industrial environments.

Can This unit compensate for shaft misalignment?

Yes, it compensates up to ±1.0 mm axial, ±1.5 mm radial and ±5° angular offset.

What is the maximum speed of this spring coupling?

The maximum speed is 3,000 rpm.

Where can I find vfd parts like This unit?

PetroPartsOnline supplies This unit and other encoder accessories for oil and gas automation.

What is the torque capacity of This unit?

The nominal torque is 1.5 N·m (150 Ncm).

For application-specific selection guidance, contact PetroPartsOnline for parts suited to your application's requirements.

{"@context": "https://schema.org", "@graph": [{"@type": "Product", "name": "KUP-1010-W | SICK 10 mm Bore Spring Coupling Encoder", "mpn": "KUP-1010-W", "sku": "KUP-1010-W", "brand": {"@type": "Brand", "name": "SICK"}, "description": "What the SICK KUP-1010-W Spring Coupling Solves The SICK KUP-1010-W is a spiral spring shaft coupling with two 10 mm bores that connects an encoder shaft to a drive shaft while absorbing misalignment. It handles a nominal torque of 1.5 N·m and operates from –30 °C to +120 °C, making it a dependable link in mission-critical motion feedback loops. In oil and gas automation, shaft misalignment is a common source of encoder failure. Vibration, thermal growth and imperfect mounting all push shafts ou", "image": ["https://www.petropartsonline.com/wp-content/uploads/2026/10/1793131512-api_image__fpfbacd5d2.jpg", "https://www.petropartsonline.com/wp-content/uploads/2026/10/1793131521-api_image__fp0d2ad8ba.jpg", "https://www.petropartsonline.com/wp-content/uploads/2026/10/1793131528-api_image__fpca12120f.jpg"]}, {"@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "What is the operating temperature range of the SICK unit?", "acceptedAnswer": {"@type": "Answer", "text": "The SICK unit operates from –30 °C to +120 °C per datasheet, suitable for many industrial environments."}}, {"@type": "Question", "name": "Can This unit compensate for shaft misalignment?", "acceptedAnswer": {"@type": "Answer", "text": "Yes, it compensates up to ±1.0 mm axial, ±1.5 mm radial and ±5° angular offset."}}, {"@type": "Question", "name": "What is the maximum speed of this spring coupling?", "acceptedAnswer": {"@type": "Answer", "text": "The maximum speed is 3,000 rpm."}}, {"@type": "Question", "name": "Where can I find vfd parts like This unit?", "acceptedAnswer": {"@type": "Answer", "text": "PetroPartsOnline supplies This unit and other encoder accessories for oil and gas automation."}}, {"@type": "Question", "name": "What is the torque capacity of This unit?", "acceptedAnswer": {"@type": "Answer", "text": "The nominal torque is 1.5 N·m (150 Ncm). For application-specific selection guidance, contact PetroPartsOnline for parts suited to your application's requirements."}}]}]}