BK5 METAL BELLOWS COUPLING WITH TAPERED PRESS-FIT CONNECTION
Specifications BK5
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 30 | |||
| Rated torque (Nm) | TKN | 30 | ||
| Overall length (mm) | A-2 | 71 | 79 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 10-30 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 10-25 | ||
| Outside diameter (mm) | B | 55 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 0,14 | 0,15 | ||
| Approximate weight (kg) | 0,3 | 0,3 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 20 | 14 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 900 | 270 | ||
| Fastening screw (ISO 4762) | E | M6 | ||
| Tightening torque of the fastening screw (Nm) | E | 15 | ||
| Distance between centerlines (mm) | F | 19 | ||
| Distance (mm) | G | 7,5 | ||
| Mounting length (mm) | C1 | 27 | ||
| Mounting length (mm) | C2 | 33 | ||
| Preload compression (mm) | H | 0,5-1,0 | ||
| Axial recovery force at maximum pretensioning (N) | H | 50 | 30 | ||
| Axial* ± (mm) | max. | 0,5 | 1 | ||
| 30 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 60 | |||
| Rated torque (Nm) | TKN | 60 | ||
| Overall length (mm) | A-2 | 85 | 95 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 12-35 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 12-32 | ||
| Outside diameter (mm) | B | 66 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 0,23 | 0,26 | ||
| Approximate weight (kg) | 0,4 | 0,4 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 38 | 28 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 1200 | 420 | ||
| 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 | ||
| Mounting length (mm) | C1 | 31 | ||
| Mounting length (mm) | C2 | 39 | ||
| Preload compression (mm) | H | 0,5-1,5 | ||
| Axial recovery force at maximum pretensioning (N) | H | 70 | 45 | ||
| Axial* ± (mm) | max. | 0,5 | 1 | ||
| 60 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 80 | |||
| Rated torque (Nm) | TKN | 80 | ||
| Overall length (mm) | A-2 | 94 | 106 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 14-42 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 14-38 | ||
| Outside diameter (mm) | B | 81 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 0,65 | 0,67 | ||
| Approximate weight (kg) | 0,9 | 0,9 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 65 | 43 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 920 | 290 | ||
| Fastening screw (ISO 4762) | E | M10 | ||
| Tightening torque of the fastening screw (Nm) | E | 50 | ||
| Distance between centerlines (mm) | F | 27 | ||
| Distance (mm) | G | 11 | ||
| Mounting length (mm) | C1 | 36 | ||
| Mounting length (mm) | C2 | 43 | ||
| Preload compression (mm) | H | 0,5-1,5 | ||
| Axial recovery force at maximum pretensioning (N) | H | 48 | 32 | ||
| Axial* ± (mm) | max. | 1 | 2 | ||
| 80 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 150 | |||
| Rated torque (Nm) | TKN | 150 | ||
| Overall length (mm) | A-2 | 95 | 107 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 14-42 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 14-38 | ||
| Outside diameter (mm) | B | 81 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 2,2 | 2,4 | ||
| Approximate weight (kg) | 1,8 | 1,8 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 88 | 55 | ||
| Lateral ± (mm) | max. | 0,2 | 0,25 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 1550 | 435 | ||
| Fastening screw (ISO 4762) | E | M10 | ||
| Tightening torque of the fastening screw (Nm) | E | 70 | ||
| Distance between centerlines (mm) | F | 27 | ||
| Distance (mm) | G | 11 | ||
| Mounting length (mm) | C1 | 36 | ||
| Mounting length (mm) | C2 | 43 | ||
| Preload compression (mm) | H | 0,5-1,5 | ||
| Axial recovery force at maximum pretensioning (N) | H | 82 | 52 | ||
| Axial* ± (mm) | max. | 1 | 2 | ||
| 150 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 300 | |||
| Rated torque (Nm) | TKN | 300 | ||
| Overall length (mm) | A-2 | 114 | 128 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 24-60 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 24-58 | ||
| Outside diameter (mm) | B | 110 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 7,4 | 7,9 | ||
| Approximate weight (kg) | 4 | 4 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 225 | 175 | ||
| Lateral ± (mm) | max. | 0,25 | 0,3 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 3750 | 1050 | ||
| 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 | ||
| Mounting length (mm) | C1 | 43 | ||
| Mounting length (mm) | C2 | 52 | ||
| Preload compression (mm) | H | 0,5-1,5 | ||
| Axial recovery force at maximum pretensioning (N) | H | 157 | 106 | ||
| Axial* ± (mm) | max. | 1,5 | 2 | ||
| 300 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 500 | |||
| Rated torque (Nm) | TKN | 500 | ||
| Overall length (mm) | A-2 | 136 | 149 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 35-60 | ||
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 35-60 | ||
| Outside diameter (mm) | B | 124 | ||
| Moment of inertia (10-3 kgm2) | Jges. | 13,7 | 14,4 | ||
| Approximate weight (kg) | 6,5 | 6,7 | |||
| Torsional stiffness (10³ Nm/rad) | CT | 255 | 245 | ||
| Lateral ± (mm) | max. | 0,3 | 0,35 | ||
| Angular ± (degree) | max. | 1 | 1,5 | ||
| Lateral spring stiffness (N/mm) | Cr | 2500 | 840 | ||
| Fastening screw (ISO 4762) | E | M16 | ||
| Tightening torque of the fastening screw (Nm) | E | 200 | ||
| Distance between centerlines (mm) | F | 41 | ||
| Distance (mm) | G | 16,5 | ||
| Mounting length (mm) | C1 | 51 | ||
| Mounting length (mm) | C2 | 61 | ||
| Preload compression (mm) | H | 1,0-2,0 | ||
| Axial recovery force at maximum pretensioning (N) | H | 140 | 96 | ||
| Axial* ± (mm) | max. | 2,5 | 3,5 | ||
| 500 | ||||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 800 | ||
| Rated torque (Nm) | TKN | 800 | |
| Overall length (mm) | A-2 | 150 | |
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 40-75 | |
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 40-62 | |
| Outside diameter (mm) | B | 133 | |
| Moment of inertia (10-3 kgm2) | Jges. | 21,5 | |
| Approximate weight (kg) | 9 | ||
| Torsional stiffness (10³ Nm/rad) | CT | 400 | |
| Lateral ± (mm) | max. | 0,35 | |
| Angular ± (degree) | max. | 1,5 | |
| Lateral spring stiffness (N/mm) | Cr | 2000 | |
| Fastening screw (ISO 4762) | E | 2x M16* | |
| Tightening torque of the fastening screw (Nm) | E | 250 | |
| Distance between centerlines (mm) | F | 2x 48* | |
| Distance (mm) | G | 18 | |
| Mounting length (mm) | C1 | 45 | |
| Mounting length (mm) | C2 | 74 | |
| Preload compression (mm) | H | 1,0-2,5 | |
| Axial recovery force at maximum pretensioning (N) | H | 200 | |
| Axial* ± (mm) | max. | 3 | |
| 800 | |||
| CAD |
| BK5 Series | |
| Rated torque (Nm) | TKN |
| Overall length (mm) | A-2 |
| Inside diameter possible from Ø to Ø H7 (mm) | D1 |
| Inside diameter possible from Ø to Ø H7 (mm) | D2 |
| Outside diameter (mm) | B |
| Moment of inertia (10-3 kgm2) | Jges. |
| Approximate weight (kg) | |
| Torsional stiffness (10³ Nm/rad) | CT |
| Lateral ± (mm) | max. |
| Angular ± (degree) | max. |
| 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 |
| Mounting length (mm) | C1 |
| Mounting length (mm) | C2 |
| Preload compression (mm) | H |
| Axial recovery force at maximum pretensioning (N) | H |
| Axial* ± (mm) | max. |
| CAD Portal |
| BK5 Serien | 1500 | ||
| Rated torque (Nm) | TKN | 1500 | |
| Overall length (mm) | A-2 | 176 | |
Inside diameter possible from Ø to Ø H7 (mm) | D1 | 50-80 | |
Inside diameter possible from Ø to Ø H7 (mm) | D2 | 50-75 | |
| Outside diameter (mm) | B | 157 | |
| Moment of inertia (10-3 kgm2) | Jges. | 51,4 | |
| Approximate weight (kg) | 15,3 | ||
| Torsional stiffness (10³ Nm/rad) | CT | 650 | |
| Lateral ± (mm) | max. | 0,35 | |
| Angular ± (degree) | max. | 1,5 | |
| Lateral spring stiffness (N/mm) | Cr | 3600 | |
| Fastening screw (ISO 4762) | E | 2x M20* | |
| Tightening torque of the fastening screw (Nm) | E | 470 | |
| Distance between centerlines (mm) | F | 2x 55* | |
| Distance (mm) | G | 22,5 | |
| Mounting length (mm) | C1 | 55 | |
| Mounting length (mm) | C2 | 94 | |
| Preload compression (mm) | H | 0,50-1,50 | |
| Axial recovery force at maximum pretensioning (N) | H | 650 | |
| Axial* ± (mm) | max. | 2 | |
| 1500 | |||
| CAD |
Properties
- Design:
- One side with a single radial clamping screw ISO 4762.
- One side includes backlash-free clamping hub and tapered press-fit device.
- Any imbalance of the clamping hub, is compensated with balancing bores located on the inside of the hub.
- Temperature range: -30° C to +100° C (-22° F to +212° F)
- Backlash: Absolutely backlash-free due to frictional clamp connection and axial pretensioning of the tapered press-fit segments.
- 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 stain- less steel
- clamping hubs up to series 80 aluminium, and 150 and up steel
- Tapered segment on hub face: glass-fiber reinforced plastic molded onto an aluminium hub.
- Speeds: Up to 10,000 rpm, over 10,000 rpm available with a finely balanced version.
- Brief overloads: Acceptable up to 1.5 times the value specified.
- Properties of Bellows Coupling model BK5:
- absolutely backlash-free and torsionally rigid
- easy mounting and dismounting
- wear-free and maintenance-free
- electrically and thermally insulated
- low moment of inertia
- compensation for misalignment
Overview