BK4
Bellows couplingsThe BK4 bellows coupling from R+W Couplings has high operational reliability and a very compact design. The hub with tapered sleeve is specially designed as an interface for Fanuc servomotors. By using friction clamp connection, this precision clutch possesses a high clamping capacity, resulting in an absolutely backlash-free clutch. 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
Clamping ring and taper sleeve
Nom. Torque
15-150 Nm
Speed
up to 10,000 rpm
Temperature range
-30 to +100 oC
Bellows material
STAINLESS STEEL
Hub material
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 BK4
- Manual BK/MK koppelingen
Tabel
| BK4 Series | 15 | 30 | 60 | 150 | |
|---|---|---|---|---|---|
| Rated torque (Nm) | TKN | 15 | 30 | 60 | 150 |
| Overall length (mm) | A2 | 47 | 54 | 68 | 76 | 72 | 82 | 82 | 94 |
| Fit length (mm) | c | 19 | 22 | 27 | 32 |
| Inside diameter range H7 (mm) | D | 10-22 | 12-23 | 12-29 | 15-37 |
| Outside diameter (mm) | B | 49 | 55 | 66 | 81 |
| Moment of inertia | (10-3 kgm2) | Jges. | 0,10 | 0,12 | 0,22 | 0,27 | 0,58 | 0,61 | 1,1 | 1,4 |
| Approximate weight (kg) | 0,25 | 0,4 | 0,8 | 1,35 | |
| Torsional stiffness (103 Nm/rad) | CT | 20 | 15 | 39 | 28 | 76 | 55 | 175 | 110 |
| Axial (mm)) | max. | 1 | 2 | 1 | 2 | 1,5 | 2 | 2 | 3 |
| Lateral ± (mm) | max. | 0,15 | 0,2 | 0,2 | 0,25 | 0,2 | 0,25 | 0,2 | 0,25 |
| Angular ± (degree) | max. | 1 | 1,5 | 1 | 1,5 | 1 | 1,5 | 1 | 1,5 |
| Axial spring stiffness (N/mm) | ca | 25 | 15 | 50 | 30 | 72 | 48 | 82 | 52 |
| Lateral spring stiffness (N/mm) | cr | 475 | 137 | 900 | 270 | 1200 | 420 | 1500 | 435 |
| Fastening screw (ISO 4017) | E | 6xM4 | 6xM5 | 6xM5 | 6xM6 |
| Tightening torque of the fastening screw (Nm) | E | 4 | 6 | 8 | 12 |
| Jack screw ISO 4017 | F | 3xM4 | 3xM4 | 3xM5 | 3xM5 |
| Outside diameter of hub (mm) | G | 20 | 27 | 30 | 30 |
| Hub length (mm) | H | 8,5 | 22 | 18 | 20 |
| Cone Ø (Fanuc-Motor)(mm) | 11 | 16 | 16 | 16 | |
| Key width (mm) | K | 4 | 5 | 5 | 5 |
| 15 | 30 | 60 | 150 |
Downloads
- All
- Datasheets
- Manuals
- Datasheets
- Datasheets
- Datasheets
- Manuals
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Frequently Asked Questions
How can I place an order with VARIODRIVE?
You can place an order with VARIODRIVE by sending your request to orders@variodrive.nl. Your request will then be processed directly by our internal sales team.
Why should I choose a complete solution from VARIODRIVE?
By choosing VARIODRIVE’s complete solution, you won’t need to worry about integrating different drive components into the machine’s drive chain. We stand behind our complete solution and can guarantee its functionality.
Why should I choose VARIODRIVE's system warranty?
Due to our in-depth knowledge of our products and their integration into applications, we can provide a system warranty. At that point, we guarantee that the application will function using our motion control and traction solutions.
How can I download 3D drawings?
For most products on our website, you can download the 3D files. If the desired 3D file is not available, please contact sales@variodrive.nl, and we will send you the 3D file as soon as possible.
How can I download software?
You can download the necessary configuration software for most products on our website. For a few products, this might not be possible. In such cases, please contact sales@variodrive.nl, and we will assist you as soon as possible.
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