HKD / HKDI 5… | Double joint coupling

Accessories – mechanical

For encoder attachments with offset
Play-free, torsion resistant and failsafe
Extends service life of encoders
Options: Isolated version (HKDI 5)

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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.

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

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Solutions

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Greater functional component reliability
Higher converter plant availability
More precise measurement signals despite shock and vibration loads
Easy and time-saving programming

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Directly attachable compact basic U-ONE unit
EMC safe signal transmission via fiber optic cable
Electronic function modules protected in switchboard

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No mechanical play because solution requires no transfer gearbox or additional couplings
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EMI safe signal transmission via fiber optic cable
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