BKH

Bellows couplings

The type BKH bellows coupling from R+W Couplings is easy to (dis)assemble due to the fully split clamping hubs. In addition, this precision coupling is very suitable for installation in compact spaces. The BKH coupling also possesses a low mass moment of inertia and by using friction clamp connection, the coupling is absolutely free of play. Thanks to its forced bellows shape, the element can simultaneously accommodate lateral, axial and angular misalignments. As long as they do not fall outside the maximum area, no metal fatigue will occur in the bellows material and the clutch is completely free of wear. For specific questions about bellows couplings, contact VARIODRIVE.

Implementation
Split clamp hub
Nom. Torque
15-4.000 Nm
Speed
up to 10,000 rpm
Temperature range
-30 to +100 oC
Bellows material
STAINLESS STEEL
Hub material
Steel or Alu
Peak load
Up to 1.5x nom. Torque
Backlash
None
Service-life
No service
Optional
ATEX, clean room version

Datasheets
  • Bestelcode instructies
  • ATEX instructies
  • Datasheet BKH
Manuals
  • Manual BK/MK koppelingen
BKH drawing
Tabel
BKH Series153060801502003005008001500
Rated torque (Nm)TKN153060801502003005008001500
Overall length | (mm)A-259 | 6669 | 7783 | 9394 | 10695 | 107105 | 117111 | 125133 | 146140166
Fit length (mm)C22273136364143514555
Inside diameter possible from Ø to Ø H7 (mm)DI/D28-2810-3012-3514-4219-4222-4524-6035-6040-7550-80
Outside diameter (mm)B495566818190110124134157
Moment of inertia (10 3 kgm2)Jges.0,07 | 0,080,14 | 0,150,23 | 0,260,65 | 0,672,5 | 3,24,5 | 15,48,5 | 10,517,3 | 19,624,349,2
Approximate weight (kg)0,150,30,40,81,72,547,5712
Torsional stiffness (103 Nm/rad)CT20 | 1539 | 2876 | 55129 | 85175 | 110191 | 140450 | 350510 | 5007801304
Axial ± (mm))max.1 | 21 | 21,5 | 22 | 32 | 32 | 32,5 | 3,52,5 | 3,53,53,5
Lateral ± | (mm)max.0,15 | 0,20,2 | 0,250,2 | 0,250,2 | 0,250,2 | 0,250,25 | 0,30,25 | 0,30,3 | 0,350,350,35
Angular ± (degree)max.1 | 1,51 | 1,51 | 1,51 | 1,51 | 1,51 | 1,51 | 1,51 | 1,51,51,5
Axial spring stiffness (N/mm)ca25 | 1550 | 3072 | 4848 | 3282 | 5290 | 60105 | 7170 | 48100320
Lateral spring stiffness (N/mm)cr475 | 137900 | 2701200 | 420920 | 2901550 | 4352040 | 6103750 | 10502500 | 84020003600
Fastening screw (ISO 4762)EM5M6M8MIOMIOM12M12M16M16M20
Tightening torque of the fastening screw (Nm)E815405070120130200250470
Distance between centerlines (mm)F17192327273139414855
Distance (mm)G6,57,59,5111112,51316,51822,5
Hub materialAluminium optional SteelAluminium optional SteelAluminium optional SteelAluminium optional SteelSteel optional AluminiumSteel optional AluminiumSteel optional AluminiumSteel optional AluminiumSteelSteel
Distance (mm)H229 | 3635 | 4341 | 5147 | 5948 | 6051 | 6355 | 6962 | 7565,571
153060801502003005008001500
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