Nickel bellows couplings BKNK with clamping hubs
The nickel bellows couplings in the variants BKNK 1733 and BKNK 2537 are miniature couplings for high-precision measuring tasks with stress-free nickel bellows and fastening with clamping hub. The installation dimensions can be deduced from the article designations: the first two numbers indicate the diameters of 17 and 25 mm, the last two numbers indicate the overall lengths of 33 and 37 mm. Like the variants with screw hubs, they have a very high torsional stiffness with low restoring forces and optimum compensation of misalignments thanks to their highly flexible bellows.
Compare our variants with screw hubs BKNS 1223, BKNS 1730 and BKNS 2533.
Technical data - bellows coupling BKNK
Technical data | BKNK 1733 | BKNK 2537 | |
|---|---|---|---|
| max. speed | min-¹ | 10.000 | 10.000 |
| max. torque | Ncm | 39 | 328 |
| max. offset of shafts | |||
| radial | mm | ± 0,72 | ± 0,46 |
| axial | mm | ± 3,09 | ± 2,77 |
| angular | Grad | ± 14 | ± 8 |
| torsion spring stiffness | Nm/rad | 80 | 462 |
| radial spring stiffness | N/mm | 5,8 | 38,1 |
| moment of inertia | gcm2 | 4,89 | 2,54 |
| max. clamping torque | Ncm | 35 | 66 |
| temperature range | °C | -30/ +120 | -30/ +120 |
| weight appr. | g | 11,5 | 28,5 |
| material flange | aluminium | anodised | |
| material bellows | nickel |
Bore combinations BKNK 1733
| d1/d2 | 03 | 04 | 05 | 06 |
| 03 | x | x | x | x |
| 04 | x | x | x | |
| 05 | x | x | ||
| 06 | x |
To download the step file, please select the required bore combination.
Bore combinations BKNK 2537
| d1/d2 | 06 | 08 | 10 | 12 |
| 06 | x | x | x | x |
| 08 | x | x | x | |
| 10 | x | x | ||
| 12 | x |
To download the step file, please select the required bore combination.
