KUP-1010-D | SICK 10 mm Double Loop Shaft Coupling
Introduction:
The SICK KUP-1010-D is a double-loop shaft coupling with 10 mm bores, 1.5 N·m torque capacity, and ±3 mm axial offset compensation for encoder mounting.
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What the SICK KUP-1010-D Solves in Encoder Drive Trains
The SICK KUP-1010-D is a double-loop shaft coupling for encoders with 10 mm bores on both the encoder and drive sides. Its polyurethane damping element and galvanized steel flange handle up to 1.5 N·m of torque while compensating for axial, radial, and angular misalignment.
In oil and gas applications, encoders often fail not from electronics but from mechanical stress. Shaft misalignment, vibration, and thermal expansion place continuous loads on encoder bearings. This unit addresses this by absorbing offset before it reaches the encoder shaft. With a maximum axial offset of ±3 mm, radial offset of ±2.5 mm, and angular offset of ±10°, the coupling protects mission-critical feedback loops in harsh environments.
Key Specifications of the SICK unit
- Bore diameter (encoder side, D1): 10 mm
- Bore diameter (drive side, D2): 10 mm (H8)
- Coupling type: Double loop coupling
- Material: Polyurethane damping element, galvanized steel flange
- Torque capacity: 1.5 N·m maximum
- Max. speed: 3,000 rpm maximum
- Operating temperature: –30 °C to +80 °C (per datasheet)
- Axial offset compensation: max. ±3 mm
- Radial offset compensation: max. ±2.5 mm
- Angular offset compensation: max. ±10°
- Dimensions: 35 ± 2 mm length × Ø 38 ± 1 mm outer diameter
The polyurethane damping element is the defining feature. It absorbs shock loads and torsional vibration that would otherwise reach the encoder bearings. Meanwhile, the galvanized steel flange provides a rigid mounting interface. This combination is field-proven in demanding environments where vibration and temperature swings are routine.
How This unit Handles Misalignment and Vibration
Misalignment is a leading cause of premature encoder failure. When a drive shaft and encoder shaft are not perfectly aligned, the encoder bearings carry loads they were not designed for. This unit compensates for three types of offset simultaneously. Axial offset up to ±3 mm covers thermal expansion and assembly tolerances. Radial offset up to ±2.5 mm handles parallel misalignment between shafts. Angular offset up to ±10° accommodates angular misalignment.
Additionally, the double-loop design provides two stages of flexibility. This reduces restoring forces on the encoder shaft compared with single-loop couplings. As a result, encoder bearings experience less stress and last longer. For oil and gas operations, this translates directly into fewer unplanned shutdowns and lower maintenance costs.
Temperature and Speed Limits in Oil and Gas Environments
The operating temperature range of –30 °C to +80 °C covers most outdoor and process-area installations. However, verify that radiant heat from nearby equipment does not exceed this range. The maximum speed of 3,000 rpm suits typical encoder applications. Higher speeds may require alternative coupling designs. The polyurethane element resists oils and greases commonly found in oil and gas facilities. Nevertheless, direct contact with aggressive solvents should be avoided. For specific chemical compatibility, consult the official datasheet.
Installation Guidance for the SICK unit
Proper installation maximizes coupling life. First, align the shafts as closely as possible before tightening. The coupling compensates for offset, but excessive misalignment reduces service life. Second, insert the shafts into the 10 mm bores to the recommended depth. Third, secure the coupling using the appropriate fastening method. The datasheet does not specify a clamping screw, so refer to SICK documentation for the fastening specification. Finally, check alignment after the system reaches operating temperature, as thermal expansion may shift positions.
Frequently Asked Questions
What is the maximum torque for the SICK unit?
The SICK unit has a maximum torque capacity of 1.5 N·m. Exceeding this value may damage the polyurethane damping element.
Can This unit be used as a servo motor replacement coupling?
This unit is designed for encoder shaft adaptation. For servo motor replacement, verify that the torque and speed ratings match your servo application. Contact PetroPartsOnline for application-specific guidance.
What is the operating temperature range of This unit?
The operating temperature range is –30 °C to +80 °C per the datasheet. Ensure the installation environment stays within this range.
Does This unit come with a clamping screw?
The datasheet does not specify a clamping screw or fastening method. Refer to official SICK documentation for the fastening specification.
How much misalignment can This unit compensate?
The coupling compensates for up to ±3 mm axial offset, ±2.5 mm radial offset, and ±10° angular offset.
Reliable Sourcing for Critical Operations
PetroPartsOnline supplies the SICK unit and other encoder accessories for oil and gas operations. Our team provides application-specific selection guidance to ensure the coupling meets your torque, speed, and environmental requirements. Contact PetroPartsOnline for parts suited to your application's requirements.
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