Series BC – Flexible Metal Bellows Couplings
The Series BC flexible metal bellows couplings provide zero backlash and high torsional rigidity, perfect for servo and other precision applications. For more information on the Series BC flexible metal bellows couplings, see the video below or contact us with the details of the application challenge you are experiencing.
- 5 Models: Provides a variety of connection options. All models rated for speeds up to 10,000 rpm
- Materials: Bellows are made of flexible, high-grade stainless steel. The hubs are made from aluminum or steel, depending on size. Hubs in stainless steel are also available
- Temperature Range: -30° C to +120° C (-22° F to +270° F). High temperature options available
- Bore diameter ranges from 6 mm to 75 mm
- Up to nine sizes available, depending on type
- Zero Backlash: Provides exact position and rotary motion
- High Torsional Rigidity: Maintains exact position when starting and stopping
- Low Inertia: Allows faster acceleration and deceleration with lower torque
- Compensates Misalignment: Allows axial, lateral, and angular misalignment for easier mounting
- Maintenance Free: No moving parts means an unlimited life with proper mounting
- Non-Standard Applications: Custom metal bellow designs, with varied tolerances, keyways, non standard material and bellows, are available upon request. Also available with ATEX certification for explosion proof application requirements
- Download the Catalog
- Download CAD Drawings (See the Charts Below)
- Request more Information
What’s Next?
Flexible Bellows Couplings Overview:
Model BC - Bellows Coupling with Clamping Hub
Design Description: Single radial clamping screw per hub ISO 4762. Any imbalance of the clamping hubs is compensated for balancing by bores located on the inside of the hub.
Bore Diameters: Metric or inch bores from 8 – 80 mm, or 0.3125 – 3.125 inches. Keyways available on request.
Sizes: BC-15, BC-30, BC-60, BC-80, BC-150, BC-200, BC-300, BC-500
Application Example:
Sizing Chart:
BC | 15 | 30 | 60 | 80 | 150 | 200 | 300 | 500 | |
---|---|---|---|---|---|---|---|---|---|
Rated torque (Nm) | T KN | 15 | 30 | 60 | 80 | 150 | 200 | 300 | 500 |
Overall Length (mm) | A⁻² | 59 | 66 | 99 | 69 | 77 | 113 | 83 | 93 | 130 | 94 | 106 | 143 | 95 | 107 | 144 | 105 | 117 | 163 | 111 | 125 | 200 | 133 | 146 | 169 |
Outside Diameter (mm) | B | 49 | 55 | 66 | 81 | 81 | 90 | 110 | 124 |
Fit length (mm) | C | 22 | 27 | 31 | 36 | 36 | 41 | 43 | 51 |
Inside diameter possible from ø to ø H7 (mm) | D1/D2 | 8-28 | 10-30 | 12-35 | 14-42 | 19-42 | 22-45 | 24-60 | 35-60 |
Fastening screw ISO 4762 | E | M5 | M6 | M8 | M10 | M10 | M12 | M12 | M16 |
Tightening Torque of fastening screw (Nm) | E | 8 | 15 | 40 | 50 | 70 | 120 | 130 | 200 |
Distance between centerlines (mm) | F | 17 | 19 | 23 | 27 | 27 | 31 | 39 | 41 |
Distance (mm) | G | 6.5 | 7.5 | 9.5 | 11 | 11 | 12.5 | 13 | 16.5 |
Download - 2D DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | DWG|DWG|DWG | |
Download - 2D PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | PDF|PDF|PDF | |
Download - 3D STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | STP |STP |STP | |
For Full Tech Details Download Catalog |
Model BCS - Bellows Coupling with Split Clamping Hub
Design Description: Both clamping hubs are completely separable, due to split hubs and two radial screws ISO 4762 on each hub. The standard BCS model is balanced to 16,000 RPM. Any imbalance of the clamping hubs is compensated for by bores located on the hub.
Bore Diameters: Metric or inch bores from 8 – 80 mm, or 0.3125 – 3.125 inches. Keyways are optional, but not necessary.
Sizes: BCS-15, BCS-30, BCS-60, BCS-80, BCS-150, BCS-200, BCS-300, BCS-500
Application Example:
Sizing Chart:
BCS | 15 | 30 | 60 | 80 | 150 | 200 | 300 | 500 | |
---|---|---|---|---|---|---|---|---|---|
Rated torque (Nm) | T KN | 15 | 30 | 60 | 80 | 200 | 500 | 300 | 500 |
Overall Length (mm) | A⁻² | 59 | 66 | 69 | 77 | 83 | 93 | 94 | 106 | 95 | 107 | 105 | 117 | 111 | 125 | 133 | 146 |
Outside Diameter (mm) | B | 49 | 55 | 66 | 81 | 81 | 90 | 110 | 124 |
Fit length (mm) | C | 16.5 | 27 | 31 | 36 | 36 | 41 | 43 | 51 |
Inside diameter possible from ø to ø H7 (mm) | D1/D2 | 8-28 | 10-30 | 12-35 | 14-42 | 19-42 | 22-45 | 24-60 | 35-60 |
Fastening screw ISO 4762 | E | M5 | M6 | M8 | M10 | M10 | M12 | M12 | M16 |
Tightening Torque of fastening screw (Nm) | E | 8 | 15 | 40 | 50 | 70 | 120 | 130 | 200 |
Distance between centerlines (mm) | F | 17.5 | 19 | 23 | 27 | 27 | 31 | 39 | 41 |
Distance (mm) | G | 7 | 7.5 | 9.5 | 12 | 12 | 12.5 | 14 | 16.5 |
Distance (mm) | H -2 | 29 | 36 | 35 | 43 | 41 | 51 | 47 | 59 | 48 | 60 | 50 | 62 | 55 | 69 | 61 | 75 |
Download - 2D .dxf - COMING SOON | |||||||||
Download - 3D .stp | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | |
For Full Tech Details Download Catalog |
Model BCE - Economy Class Bellows Coupling with Clamping Hub
Design Description: 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.
Bore Diameters: Metric or inch bores from 4 – 62 mm, or 0.1875 – 2.375 inches. Keyways are optional, but not necessary.
Sizes: BCE-4.5, BCE-10, BCE-15, BCE-30, BCE-60, BCE-80, BCE-150, BCE-300, BCE-500
Application Example:
Sizing Chart:
BCE | 4.5 | 10 | 15 | 30 | 60 | 80 | 150 | 300 | 500 | |
---|---|---|---|---|---|---|---|---|---|---|
Rated torque (Nm) | T KN | 4.5 | 10 | 15 | 30 | 60 | 80 | 150 | 300 | 500 |
Overall Length (mm) | A⁻² | 40 | 44 | 58 | 68 | 79 | 92 | 92 | 109 | 114 |
Outside Diameter (mm) | B | 32 | 40 | 49 | 56 | 66 | 82 | 82 | 110 | 123 |
Fit length (mm) | C | 13 | 13 | 21.5 | 26 | 28 | 32.5 | 32.5 | 41 | 42.5 |
Inside diameter possible from ø to ø H7 (mm) | D1/D2 | 6-16 | 6-24 | 8-28 | 10-32 | 14-35 | 16-42 | 19-42 | 24-60 | 35-62 |
Fastening screw ISO 4762 | E | M4 | M4 | M5 | M5 | M8 | M10 | M10 | M12 | M16 |
Tightening Torque of fastening screw (Nm) | E | 4 | 4.5 | 8 | 8 | 40 | 70 | 85 | 120 | 200 |
Distance between centerlines (mm) | F | 11 | 14 | 17 | 17 | 23 | 27 | 27 | 39 | 41 |
Distance (mm) | G | 5 | 5 | 6.5 | 6.5 | 9.5 | 11 | 11 | 13 | 17 |
Download - 2D DWG | DWG | DWG | DWG | DWG | DWG | DWG | DWG | DWG | DWG | |
Download - 2D PDF | ||||||||||
Download - 3D STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | |
For Full Tech Details Download Catalog |
Model BCC - Economy Class Compact Coupling with Clamping Hub
Design Description: 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.
Bore Diameters: Metric or inch bores from 8 – 75 mm, or 0.3125 – 2.875 inches. Keyways are optional, but not necessary.
Sizes: BCC-15, BCC-30, BCC-60, BCC-150, BCC-300, BCC-500
Application Example:
Sizing Chart:
BCC | 15 | 30 | 60 | 150 | 300 | 500 | |
---|---|---|---|---|---|---|---|
Rated torque (Nm) | T KN | 15 | 30 | 60 | 150 | 300 | 500 |
Overall Length (mm) | A⁻² | 48 | 58 | 67 | 78 | 94 | 100 |
Outside Diameter (mm) | B | 49 | 56 | 66 | 82 | 110 | 123 |
Fit length (mm) | C | 16.5 | 21 | 23 | 27.5 | 34 | 34 |
Inside diameter possible from ø to ø H7 (mm) | D1/D2 | 8-28 | 12-32 | 14-35 | 19-42 | 24-60 | 32-75 |
Fastening screw ISO 4762 | E | M5 | M6 | M8 | M10 | M12 | M12 |
Tightening Torque of fastening screw (Nm) | 8 | 15 | 40 | 75 | 120 | 125 | |
Distance between centerlines (mm) | F | 17.5 | 20 | 23 | 27 | 39 | 45 |
Distance (mm) | G | 6.5 | 7.5 | 9.5 | 11 | 13 | 13 |
Download - 2D DWG | DWG | DWG | DWG | DWG | DWG | DWG | |
Download - 2D PDF | |||||||
Download - 3D STP | STP | STP | STP | STP | STP | STP | |
For Full Tech Details Download Catalog |
Model BCB - Blind Mate Bellows Coupling with Clamping Hub
Design Description: 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 for balancing bores located on the inside of the hub. Easy mounting and dismounting. Wear-free press-fit connection. Electrically and thermally insulated.
Bore Diameters: Metric or inch bores from 8 – 60 mm, or 0.3125 – 2.36 inches. Limited keyway availability.
Options: Single position or multi-position configurations.
Sizes: BCB-15, BCB-30, BCB-60, BCB-80, BCB-150, BCB-300, BCB-500
Application Example:
Sizing Chart:
BCB | 15 | 30 | 60 | 80 | 150 | 300 | 500 | |
---|---|---|---|---|---|---|---|---|
Rated torque (Nm) | T KN | 15 | 30 | 60 | 80 | 150 | 300 | 500 |
Overall Length (mm) | A+.05 | 60 | 67 | 71 | 79 | 85 | 95 | 94 | 106 | 95 | 107 | 114 | 128 | 136 | 149 |
Outside Diameter (mm) | B | 49 | 55 | 66 | 81 | 81 | 110 | 124 |
Fit length (mm) | C1 | 22 | 27 | 31 | 36 | 36 | 43 | 51 |
Fit length (mm) | C2 | 28 | 33 | 39 | 43 | 43 | 52 | 61 |
Inside diameter possible from ø to ø H7 (mm) | D1 | 8-28 | 10-30 | 12-35 | 14-42 | 14-42 | 24-60 | 35-60 |
Inside diameter possible from ø to ø H7 (mm) | D2 | 8-22 | 10-25 | 12-32 | 14-38 | 14-38 | 24-58 | 35-60 |
Fastening screw ISO 4762 | E | M5 | M6 | M8 | M10 | M10 | M12 | M16 |
Tightening Torque of fastening screw (Nm) | E | 8 | 15 | 40 | 50 | 70 | 130 | 200 |
Distance between centerlines (mm) | F | 17 | 19 | 23 | 27 | 27 | 39 | 41 |
Distance (mm) | G | 6.5 | 7.5 | 9.5 | 11 | 11 | 13 | 16.5 |
Download - 2D .dxf - COMING SOON | ||||||||
Download - 3D .STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | STP | |
For Full Tech Details Download Catalog |