BKM METAL BELLOWS COUPLING WITH CLAMPING HUB
Specifications BKM
| BKM Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Fit length (mm) | C |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Axial spring stiffness (N/mm) | Ca |
| Lateral spring stiffness (N/mm) | Cr |
| Fastening screw (ISO 4762) | E |
| Tightening torque of the fastening screw (Nm) | E |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Hub material | |
| Speed max. with G = 2.5 balancing (min-1) | |
| CAD Portal |
| BKM Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Fit length (mm) | C |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Axial spring stiffness (N/mm) | Ca |
| Lateral spring stiffness (N/mm) | Cr |
| Fastening screw (ISO 4762) | E |
| Tightening torque of the fastening screw (Nm) | E |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Hub material | |
| Speed max. with G = 2.5 balancing (min-1) | |
| CAD Portal |
| BKM Serien | 200 | ||
| Rated torque (Nm) | TKN | 200 | |
| Overall length (mm) | A-2 | 59 | |
| Fit length (mm) | C | 23 | |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 | 24-35 | |
| Outside diameter (mm) | B | 66 | |
| Moment of inertia (10-3 kgm2) | Jges. | 0,18 | |
| Approximate weight (kg) | 0,4 | ||
| Torsional stiffness (10³ Nm/rad) | CT | 138 | |
| Axial ± (mm)) | max. | 1,5 | |
| Lateral ± (mm) | max. | 0,08 | |
| Angular ± (degree) | max. | 0,5 | |
| Axial spring stiffness (N/mm) | Ca | 153 | |
| Lateral spring stiffness (N/mm) | Cr | 11000 | |
| Fastening screw (ISO 4762) | E | M8 | |
| Tightening torque of the fastening screw (Nm) | E | 40 | |
| Distance between centerlines (mm) | F | 23 | |
| Distance (mm) | G | 9,5 | |
| Hub material | Aluminium | ||
| Speed max. with G = 2.5 balancing (min-1) | 60000 | ||
| 200 | |||
| CAD |
| BKM Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Fit length (mm) | C |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Axial spring stiffness (N/mm) | Ca |
| Lateral spring stiffness (N/mm) | Cr |
| Fastening screw (ISO 4762) | E |
| Tightening torque of the fastening screw (Nm) | E |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Hub material | |
| Speed max. with G = 2.5 balancing (min-1) | |
| CAD Portal |
| BKM Serien | 400 | ||
| Rated torque (Nm) | TKN | 400 | |
| Overall length (mm) | A-2 | 75 | |
| Fit length (mm) | C | 27,5 | |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 | 32-42 | |
| Outside diameter (mm) | B | 82 | |
| Moment of inertia (10-3 kgm2) | Jges. | 0,62 | |
| Approximate weight (kg) | 0,7 | ||
| Torsional stiffness (10³ Nm/rad) | CT | 170 | |
| Axial ± (mm)) | max. | 1 | |
| Lateral ± (mm) | max. | 0,1 | |
| Angular ± (degree) | max. | 0,5 | |
| Axial spring stiffness (N/mm) | Ca | 114 | |
| Lateral spring stiffness (N/mm) | Cr | 6058 | |
| Fastening screw (ISO 4762) | E | M10 | |
| Tightening torque of the fastening screw (Nm) | E | 60 | |
| Distance between centerlines (mm) | F | 27 | |
| Distance (mm) | G | 11 | |
| Hub material | Aluminium | ||
| Speed max. with G = 2.5 balancing (min-1) | 50000 | ||
| 400 | |||
| CAD |
| BKM Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Fit length (mm) | C |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Axial ± (mm)) | max. |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| Axial spring stiffness (N/mm) | Ca |
| Lateral spring stiffness (N/mm) | Cr |
| Fastening screw (ISO 4762) | E |
| Tightening torque of the fastening screw (Nm) | E |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Hub material | |
| Speed max. with G = 2.5 balancing (min-1) | |
| CAD Portal |
| BKM Serien | 1000 | ||
| Rated torque (Nm) | TKN | 1000 | |
| Overall length (mm) | A-2 | 89 | |
| Fit length (mm) | C | 34 | |
Inside diameter possible from Ø to Ø H7 (mm) | D1/D2 | 40-60 | |
| Outside diameter (mm) | B | 110 | |
| Moment of inertia (10-3 kgm2) | Jges. | 7,2 | |
| Approximate weight (kg) | 3,5 | ||
| Torsional stiffness (10³ Nm/rad) | CT | 570 | |
| Axial ± (mm)) | max. | 2 | |
| Lateral ± (mm) | max. | 0,1 | |
| Angular ± (degree) | max. | 0,5 | |
| Axial spring stiffness (N/mm) | Ca | 148 | |
| Lateral spring stiffness (N/mm) | Cr | 9010 | |
| Fastening screw (ISO 4762) | E | M12 | |
| Tightening torque of the fastening screw (Nm) | E | 130 | |
| Distance between centerlines (mm) | F | 39 | |
| Distance (mm) | G | 13 | |
| Hub material | Steel | ||
| Speed max. with G = 2.5 balancing (min-1) | 40000 | ||
| 1000 | |||
| CAD |
Properties
- Design:
- With a single ISO 4762 radial clamping screw per hub.
- Self opening clamp system optional: Loosening the clamping screw applies force to the pin, which will force the clamp into the open position for easy mounting and dismounting.
- Temperature range: -30° C to +100° C (-22° F to +212° F)
- Backlash: Absolutely backlash-free due to frictional clamped connection.
- Service life: These couplings have an infinite life and are maintenance-free if the technical ratings are not exceeded.
- Tolerance: On the hub/shaft connection 0.01 to 0.05 mm.
- Material:
- Bellows made of highly flexible high-grade stainless steel.
- Hub material see table.
- Speeds: Standard up to 10,000
Option
- 1: In excess of 10,000 rpm with a finely balanced version Option
- 2: in excess of 30,000 rpm, with balancing grade G = 2.5 (see table)
- Non-standard application:
- Custom designs with varied tolerances, keyways, non-standard material, bellows and ATEX designs are available upon request.
- Properties of Bellows Coupling model BKM:
- compact design for high torques
- easy to mount
- suited for space restricted installations
- low moment of inertia
Overview