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HKD / HKDI 5… | Double joint coupling

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  • For encoder attachments with offset

  • Play-free, torsion resistant and failsafe

  • Extends service life of encoders

  • Options: Isolated version (HKDI 5)


Technical Data
Attribute Value
Product usage

- Compensate axial misalignment

- Compensate parallel misalignment

- Isolate against existing bearing/shaft currents

Coupling specification

- HKD 5…: Stainless steel coupling

- HKDI 5…: Stainless steel coupling with plastic screws (electrically isolated)

Bore drive side Max. Ø 22 mm with keyway or clamp
Bore encoder side Max. Ø 22 mm with keyway or clamp
Outer diameter Ø 54 mm
Total length 66 - 120 mm
Mounting accuracy Radial misalignment: up to ±0.5 mm / axial misalignment: up to ±1 mm
Maximum rotation 4000 rpm
Temperature range

- HKD 5…: -50 °C to +120 °C

- HKDI 5…: -40 °C to +110 °C

Shock resistance Briefly 50 g
Vibration resistance Briefly 10 g
Insulated against currents

- HKD 5…: No

- HKDI 5…: Yes

Mechanical options

- Isolation against bearing/shaft currents (type HKSI)

- Attachment to larger shaft diameters possible with adapter shaft

Special features and certificates  
The stable connections
Corrosion proof HKD metal multiple disc couplings compensate a parallel misalignment up to ±0.5 mm and an axial misalignment up to ±1 mm as well as extending the service life of encoders in the process. Double joint couplings are available with different hub lengths and bore diameters in addition to isolated coupling versions for attachments where the risk of shaft currents is a concern.
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