HKDS / HKDSI 5…
Safety double joint couplings
HKS(I) / HKDS(I) Safety Couplings
Short info: Accessories mechanical
- For encoder attachments requiring functional safety (PL e)
- Play-free, torsion resistant and failsafe
- Extends service life of encoders
- Options: Isolated version (HKDSI 5) or Ex-proof version (HKDS 5 Ex)
Safety double joint couplings
Corrosion proof HKDS 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. They are
safety components in accordance with DIN EN ISO 13849-2 (PL e) with CE
declaration of conformity and designed in high safety factors relating
to fatigue resistance and fault exclusion. In addition, it is possible
to implement failsafe encoder attachment solutions in potentially
explosive atmospheres. As a consequence, they are ideal for extreme
operating conditions. 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.
| Attribute | Value |
|---|---|
| Anwendung | Compensate axial misalignment |
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Compensate parallel misalignment |
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Attachment points with functional safety requirement (SIL/PL) |
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Attachment points in potentially explosive atmospheres (ATEX / IECEx) |
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Isolate against existing bearing/shaft currents |
| Coupling specification | HKDS 5… / HKDS 5... Ex: Stainless steel coupling |
|
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HKDSI 5…: Stainless steel coupling with plastic isolating bushing (electrically isolated) |
| Bore drive side | Ø 22 mm with keyway |
| Bore encoder side | HKDS 5… / HKDS 5... Ex: Max. Ø 22 mm with keyway |
|
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HKDSI 5…: Max. Ø 10-14 mm with keyway (plastic isolating bushing) |
| Outer diameter | Ø 54 mm |
| Total length | 68 mm - 120 mm |
| Mounting accuracy | Radial misalignment: up to ±0.5 mm / axial misalignment: up to ±1.5 mm |
| Maximum rotation | 6000 rpm |
| Temperature range | HKDS 5…: -50 °C to +120 °C |
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HKDSI 5…: -25 °C to +85 °C |
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HKDS 5… Ex: -50 °C to +70 °C |
| Shock resistance | 10 g (briefly 100 g) |
| Vibration resistance | 3 g (briefly 20 g) |
| Insulated against currents | HKDS 5… / HKDS 5... Ex: No |
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HKDSI 5…: Yes |
| Mechanical options | Isolation against bearing/shaft currents (type HKSI) |
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Attachment to larger shaft diameters possible with adapter shaft |
| Special features and certificates | Designed as safety component with fault exclusion to DIN EN ISO 13849-2 (up to PLe), with CE declaration of conformity |
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Additional safety claws ensure availability even if spring washers fracture due to overload |
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Spring washers made of high tensile steel with special corrosion protection |
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Ex-proof acc. ATEX/IECEx: zones 1 and 2 (gas) as well as 21 and 22 (dust); isolated version type HKSI 5… not available for Ex applications due to the risk of build-up of electrostatic charge (plastic). |
Flohr Industrietechnik GmbH - Im Unteren Tal 1 - D-79761 Waldshut-Tiengen - Phone: +49 (0)7751 / 8731-0 - info@flohr-industrietechnik.de