Safety couplings, double joint HKDS 5./ HKDS 5.Ex / HKDSI 5

About the product

For encoder connection requiring functional safety (PL e) Suitable for foot mounts and mounts with larger displacements. Backlash-free, torsion-resistant and fail-safe Extended service life for encoders. Options: insulated version, Ex-proof version

Application

• Compensation of axial displacement
• Parallel displacement compensation
• Fixing points with functional safety requirements (SIL/PL)
• Anchorage points in potentially explosive atmospheres (ATEX / IECEx)
• Insulation against existing bearing/shaft currents

• Mounting accuracy: Radial misalignment: up to ±0.5 mm / axial misalignment: up to ±1.5 mm
• Coupling type HKDS 5… / HKDS 5… E.g.: Stainless steel coupling
• HKDSI 5…: Stainless steel coupling with plastic insulating sleeve (electrically insulated)
• Drilling drive side Ø 22 mm with keyway
• Drilling encoder side HKDS 5… / HKDS 5… E.g.: Max. Ø 22 mm with keyway HKDSI 5...: Max. Ø 10–14 mm with wedge groove (plastic insulating liner)
• Outer diameter Ø 54 mm
• Maximum speed / frequency 6000 rpm Shock resistance 10 g (short-term 100 g) Vibration resistance 3 g (short-term 20 g)
• Temperature range HKDS 5…: -50 °C to +120 °C HKDSI 5…: -25 °C to +85 °C HKDS 5… Ex: -50 °C to +70 °C
• Insulation against bearing/shaft current HKDS 5… / HKDS 5… Ex: No HKDSI 5…: Yes
• Mechanical options: Insulation against bearing/shaft current (type HKDSI)
• Possibility of mounting on larger shaft diameters with adapter shaft
• Total length 68–120 mm
• Certificates / Approvals: Designed as a safety component with Fail-Safety according to DIN EN ISO 13849-2 (up to PLe), with CE declaration of conformity
• Additional safety claws ensure accessibility even if the spring washers burst due to overload
• Spring washers made of high-strength steel with special corrosion protection
• Ex-resistant according to ATEX/IECEx: Gas (zones 1 and 2): II 2G Ex h IIC T6 Gb Dust (zones 21 and 22): II 2D Ex h IIIC T85°C Db