BK8 METAL BELLOWS COUPLING WITH FLANGE MOUNTING FOR ROBOT GEARS
Specifications BK8
| BK8 Series | |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Fastening screw (ISO 4762) | E1 |
| Tightening torque of the clamping screw max. (Nm) | E1 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Flange centering diameter (mm) | |
| Flange bolt circle / thread Ø (mm) | |
| Maximum torque* (Nm) | |
| Length (mm) | A1 |
| Length -2 (mm) | A2 |
| Outside diameter of hub (mm) | B1 |
| Flange outside diameter (mm) | B2 |
| Bolt circle diameter (mm) | DL |
| Thread (mm) | DL |
| CAD Portal |
| BK8 Series | |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Fastening screw (ISO 4762) | E1 |
| Tightening torque of the clamping screw max. (Nm) | E1 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Flange centering diameter (mm) | |
| Flange bolt circle / thread Ø (mm) | |
| Maximum torque* (Nm) | |
| Length (mm) | A1 |
| Length -2 (mm) | A2 |
| Outside diameter of hub (mm) | B1 |
| Flange outside diameter (mm) | B2 |
| Bolt circle diameter (mm) | DL |
| Thread (mm) | DL |
| CAD Portal |
| BK8 Serien | 60 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 14-35 | |
| Moment of inertia (10-3 kgm2) | Jges. | 0,65 | |
| Approximate weight (kg) | 0,7 | ||
| Axial ± (mm)) | max. | 1,5 | |
| Lateral ± (mm) | max. | 0,25 | |
| Angular ± (degree) | max. | 1 | |
| Fastening screw (ISO 4762) | E1 | 1x M8 | |
| Tightening torque of the clamping screw max. (Nm) | E1 | 45 | |
| Distance between centerlines (mm) | F | 1x23 | |
| Distance (mm) | G | 9,5 | |
| Mounting length (mm) | C1 | 23 | |
| Flange centering diameter (mm) | 63h7 | ||
| Flange bolt circle / thread Ø (mm) | 50 / 8x M6 | ||
| Maximum torque* (Nm) | 210 | ||
| Length (mm) | A1 | 67 | |
| Length -2 (mm) | A2 | 97 | |
| Outside diameter of hub (mm) | B1 | 66 | |
| Flange outside diameter (mm) | B2 | 86 | |
| Bolt circle diameter (mm) | DL | 76 | |
| Thread (mm) | DL | 10x M5 | |
| 60 | |||
| CAD |
| BK8 Series | |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Fastening screw (ISO 4762) | E1 |
| Tightening torque of the clamping screw max. (Nm) | E1 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Flange centering diameter (mm) | |
| Flange bolt circle / thread Ø (mm) | |
| Maximum torque* (Nm) | |
| Length (mm) | A1 |
| Length -2 (mm) | A2 |
| Outside diameter of hub (mm) | B1 |
| Flange outside diameter (mm) | B2 |
| Bolt circle diameter (mm) | DL |
| Thread (mm) | DL |
| CAD Portal |
| BK8 Serien | 150 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 19-42 | |
| Moment of inertia (10-3 kgm2) | Jges. | 1,3 | |
| Approximate weight (kg) | 1 | ||
| Axial ± (mm)) | max. | 2 | |
| Lateral ± (mm) | max. | 0,25 | |
| Angular ± (degree) | max. | 1 | |
| Fastening screw (ISO 4762) | E1 | 1x M10 | |
| Tightening torque of the clamping screw max. (Nm) | E1 | 80 | |
| Distance between centerlines (mm) | F | 1x27 | |
| Distance (mm) | G | 11 | |
| Mounting length (mm) | C1 | 27,5 | |
| Flange centering diameter (mm) | 80h7 | ||
| Flange bolt circle / thread Ø (mm) | 63 / 12x M6 | ||
| Maximum torque* (Nm) | 380 | ||
| Length (mm) | A1 | 72 | |
| Length -2 (mm) | A2 | 101 | |
| Outside diameter of hub (mm) | B1 | 82 | |
| Flange outside diameter (mm) | B2 | 108 | |
| Bolt circle diameter (mm) | DL | 97 | |
| Thread (mm) | DL | 10x M6 | |
| 150 | |||
| CAD |
| BK8 Series | |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Fastening screw (ISO 4762) | E1 |
| Tightening torque of the clamping screw max. (Nm) | E1 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Flange centering diameter (mm) | |
| Flange bolt circle / thread Ø (mm) | |
| Maximum torque* (Nm) | |
| Length (mm) | A1 |
| Length -2 (mm) | A2 |
| Outside diameter of hub (mm) | B1 |
| Flange outside diameter (mm) | B2 |
| Bolt circle diameter (mm) | DL |
| Thread (mm) | DL |
| CAD Portal |
| BK8 Serien | 300 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 24-60 | |
| Moment of inertia (10-3 kgm2) | Jges. | 5,5 | |
| Approximate weight (kg) | 2,8 | ||
| Axial ± (mm)) | max. | 2,5 | |
| Lateral ± (mm) | max. | 0,25 | |
| Angular ± (degree) | max. | 1 | |
| Fastening screw (ISO 4762) | E1 | 1x M12 | |
| Tightening torque of the clamping screw max. (Nm) | E1 | 120 | |
| Distance between centerlines (mm) | F | 1x39 | |
| Distance (mm) | G | 13 | |
| Mounting length (mm) | C1 | 34 | |
| Flange centering diameter (mm) | 100h7 | ||
| Flange bolt circle / thread Ø (mm) | 80 / 12 M8 | ||
| Maximum torque* (Nm) | 750 | ||
| Length (mm) | A1 | 90 | |
| Length -2 (mm) | A2 | 128 | |
| Outside diameter of hub (mm) | B1 | 110 | |
| Flange outside diameter (mm) | B2 | 132 | |
| Bolt circle diameter (mm) | DL | 120 | |
| Thread (mm) | DL | 12x M6 | |
| 300 | |||
| CAD |
| BK8 Series | |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Fastening screw (ISO 4762) | E1 |
| Tightening torque of the clamping screw max. (Nm) | E1 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Flange centering diameter (mm) | |
| Flange bolt circle / thread Ø (mm) | |
| Maximum torque* (Nm) | |
| Length (mm) | A1 |
| Length -2 (mm) | A2 |
| Outside diameter of hub (mm) | B1 |
| Flange outside diameter (mm) | B2 |
| Bolt circle diameter (mm) | DL |
| Thread (mm) | DL |
| CAD Portal |
| BK8 Serien | 1500 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 50-80 | |
| Moment of inertia (10-3 kgm2) | Jges. | 45 | |
| Approximate weight (kg) | 10 | ||
| Axial ± (mm)) | max. | 3 | |
| Lateral ± (mm) | max. | 0,25 | |
| Angular ± (degree) | max. | 1 | |
| Fastening screw (ISO 4762) | E1 | 2 x M20 | |
| Tightening torque of the clamping screw max. (Nm) | E1 | 470 | |
| Distance between centerlines (mm) | F | 2x55 | |
| Distance (mm) | G | 22,5 | |
| Mounting length (mm) | C1 | 55 | |
| Flange centering diameter (mm) | 160h7 | ||
| Flange bolt circle / thread Ø (mm) | 125 / 12x M10 | ||
| Maximum torque* (Nm) | 2600 | ||
| Length (mm) | A1 | 140 | |
| Length -2 (mm) | A2 | 190 | |
| Outside diameter of hub (mm) | B1 | 157 | |
| Flange outside diameter (mm) | B2 | 188 | |
| Bolt circle diameter (mm) | DL | 170 | |
| Thread (mm) | DL | 16 x M8 | |
| 1500 | |||
| CAD |
Properties
- Design:
- One side with a clamping hub and a single radial clamping screw ISO 4762.
- One side with a flange-connection and a seperate intermediate flange.
- Temperature range: -30° C to +100° C (-22° F to +212° F)
- Speed: Up to 10,000 rpm.
- Service life: R+W Bellows Coupling BK7 are maintenance-free and have an infinite life, if the technical ratings are not exceeded.
- Fit tolerance: On the hub/shaft connection 0.01 to 0.05 mm.
- Material:
- The hubs are made of aluminium
- Series 300 and 1500 made of steel
- Bellows are made of highly flexible, high-grade stainless steel
- Intermediate flange made of steel (standard)
- Non-standard application: Custom designs with varied tolerances, keyways, non-standard material and bellows are available upon request.
- Properties of Bellows Coupling model BK8:
- zero backlash and high torsional rigidity
- easy assembly
- compact design
- suited for space restricted installations
Overview