BK7 METAL BELLOWS COUPLING WITH EXPANDING SHAFT
Especificações BK7
| BK7 Série | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| 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) | E1/2 |
| Tightening torque of the fastening screw (Nm) | E1/2 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Fit length (mm) | C2 |
| Shaft diameter from Ø to Ø h7 (mm) | D2 |
| Hub material | |
| CAD Portal |
| BK7 Série | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| 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) | E1/2 |
| Tightening torque of the fastening screw (Nm) | E1/2 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Fit length (mm) | C2 |
| Shaft diameter from Ø to Ø h7 (mm) | D2 |
| Hub material | |
| CAD Portal |
| BK7 Serien | 30 | |||
| Rated torque (Nm) | TKN | 30 | ||
| Overall length (mm) | A-2 | 53 | 61 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 10-30 | ||
| Outside diameter (mm) | B | 55 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 0,14 | 0,15 | ||
| Approximate weight (kg) | 0,3 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 39 | 28 | ||
| Axial ± (mm) | max. | 1 | 2 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1|1,5 | ||
| Axial spring stiffness (N/mm) | Ca | 50 | 30 | ||
| Lateral spring stiffness (N/mm) | Cr | 730 | 230 | ||
| Fastening screw (ISO 4762) | E1/2 | M6 | ||
| Tightening torque of the fastening screw (Nm) | E1/2 | 14 | ||
| Distance between centerlines (mm) | F | 19 | ||
| Distance (mm) | G | 7,5 | ||
| Mounting length (mm) | C1 | 27 | ||
| Fit length (mm) | C2 | 25 | ||
| Shaft diameter from Ø to Ø h7 (mm) | D2 | 14-30 | ||
| Hub material | Alumínio | |||
| 30 | ||||
| CAD |
| BK7 Série | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| 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) | E1/2 |
| Tightening torque of the fastening screw (Nm) | E1/2 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Fit length (mm) | C2 |
| Shaft diameter from Ø to Ø h7 (mm) | D2 |
| Hub material | |
| CAD Portal |
| BK7 Serien | 60 | |||
| Rated torque (Nm) | TKN | 60 | ||
| Overall length (mm) | A-2 | 62 | 72 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 12-35 | ||
| Outside diameter (mm) | B | 66 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 0,23 | 0,26 | ||
| Approximate weight (kg) | 0,4 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 76 | 55 | ||
| Axial ± (mm) | max. | 1,5 | 2 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1|1,5 | ||
| Axial spring stiffness (N/mm) | Ca | 72 | 48 | ||
| Lateral spring stiffness (N/mm) | Cr | 1200 | 380 | ||
| Fastening screw (ISO 4762) | E1/2 | M8 | ||
| Tightening torque of the fastening screw (Nm) | E1/2 | 38 | ||
| Distance between centerlines (mm) | F | 23 | ||
| Distance (mm) | G | 9,5 | ||
| Mounting length (mm) | C1 | 31 | ||
| Fit length (mm) | C2 | 27 | ||
| Shaft diameter from Ø to Ø h7 (mm) | D2 | 23-38 | ||
| Hub material | Alumínio | |||
| 60 | ||||
| CAD |
| BK7 Série | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| 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) | E1/2 |
| Tightening torque of the fastening screw (Nm) | E1/2 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Fit length (mm) | C2 |
| Shaft diameter from Ø to Ø h7 (mm) | D2 |
| Hub material | |
| CAD Portal |
| BK7 Serien | 150 | |||
| Rated torque (Nm) | TKN | 150 | ||
| Overall length (mm) | A-2 | 71 | 83 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 19-42 | ||
| Outside diameter (mm) | B | 81 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 2,2 | 2,4 | ||
| Approximate weight (kg) | 1,7 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 175 | 110 | ||
| Axial ± (mm) | max. | 2 | 3 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1|1,5 | ||
| Axial spring stiffness (N/mm) | Ca | 82 | 52 | ||
| Lateral spring stiffness (N/mm) | Cr | 1550 | 435 | ||
| Fastening screw (ISO 4762) | E1/2 | M10 | ||
| Tightening torque of the fastening screw (Nm) | E1/2 | 65 | ||
| Distance between centerlines (mm) | F | 27 | ||
| Distance (mm) | G | 11 | ||
| Mounting length (mm) | C1 | 36 | ||
| Fit length (mm) | C2 | 32 | ||
| Shaft diameter from Ø to Ø h7 (mm) | D2 | 26-45 | ||
| Hub material | Stahl | |||
| 150 | ||||
| CAD |
| BK7 Série | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| 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) | E1/2 |
| Tightening torque of the fastening screw (Nm) | E1/2 |
| Distance between centerlines (mm) | F |
| Distance (mm) | G |
| Mounting length (mm) | C1 |
| Fit length (mm) | C2 |
| Shaft diameter from Ø to Ø h7 (mm) | D2 |
| Hub material | |
| CAD Portal |
| BK7 Serien | 300 | |||
| Rated torque (Nm) | TKN | 300 | ||
| Overall length (mm) | A-2 | 84 | 98 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 30-60 | ||
| Outside diameter (mm) | B | 110 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 6,5 | 8,9 | ||
| Approximate weight (kg) | 4 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 450 | 350 | ||
| Axial ± (mm) | max. | 2,5 | 3,5 | ||
| Lateral ± (mm) | max. | 0,25 | 0,3 | ||
| Angular ± (degree) | max. | 1|1,5 | ||
| Axial spring stiffness (N/mm) | Ca | 105 | 71 | ||
| Lateral spring stiffness (N/mm) | Cr | 3750 | 1050 | ||
| Fastening screw (ISO 4762) | E1/2 | M12 | ||
| Tightening torque of the fastening screw (Nm) | E1/2 | 120 | ||
| Distance between centerlines (mm) | F | 39 | ||
| Distance (mm) | G | 13 | ||
| Mounting length (mm) | C1 | 43 | ||
| Fit length (mm) | C2 | 45 | ||
| Shaft diameter from Ø to Ø h7 (mm) | D2 | 38-60 | ||
| Hub material | Aço | |||
| 300 | ||||
| CAD |
Propriedade
- Design:
- On one side with a single radial clamping screw ISO 4762.
- On one side an expanding shaft with tapered clamping element.
- Temperature range: -30° C to +100° C (-22° F to +212° F)
- Backlash: Absolutely backlash-free due to frictional clamp 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
- Expanding hub and cone (steel)
- Brief overload: Acceptable up to 1.5 times the value specified.
- Speeds: Up to 10,000 rpm, over 10,000 rpm available with a finely balanced version.
- Custom designs: Custom designs with varied tolerances, keyways, non-standard material, bellows and ATEX designs are available upon request.
- Properties of Bellows Coupling model BK7:
- compact design, conserves space while saving cost
- easy mounting
- low moment of inertia
- backlash-free and torsionally rigid
- compensation for misalignment
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