---
title: Metal bellows couplings
url: "https://www.wittenstein-group.com/en-uk/product/metal-bellows-couplings"
date: 2026-02-16
modified: 2026-02-24
lastUpdated: 2026-04-13
---

# Metal bellows couplings

Accessories

Our metal bellows couplings are optimally matched to the requirements of our gearboxes and specially developed for the high demands of servo drive technology. High torsional rigidity enables accurate results and high dynamics.

 Downloads

![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/7/e/csm_METALBELLOWS-COUPLING-IMAGE_e0e92a64c2.webp)

### 2 – 10000 Nm

Max. acceleration torque

### 4 – 3172 Nm/arcmin

Torsional rigidity

### 4 – 180 mm

Bore diameter D1/D2

[ Technical details ](#tech-details)

[ Related products ](#related)

[ Request consultation ](#consultation)

![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/12-7-precision.svg)

###### Precise transmission

For precise motion sequences – ideal for high positioning accuracy requirements

![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/65-torsionalStiffness.svg)

###### High torsional rigidity

Maximum rigidity for dynamic applications with rapid changes of direction

![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/30-3-maintenance.svg)

###### Maintenance-free

Permanently reliable in use – without any readjustment or lubrication

- Technical data
- Available options
- Downloads

|  | BCT | BCH | BC2 | BC3 | BCL |
|---|---|---|---|---|---|
| Max. acceleration torque TB \[Nm\] | 50 - 8500 | 15 - 1500 | 15 - 6000 | 15 - 10000 | 2 - 500 |
| Backlash | completely backlash-free |
| Selectable bore diameters D1/D2 \[mm\] | 12 - 100 | 8 -80 | 8 - 140 | 10 - 180 | 4 - 62 |

|  | BCT | BCH | BC2 | BC3 | BCL |
|---|---|---|---|---|---|
| **Assembly** |  |  |  |  |  |
| Standard clamping hub (radial) | ✓ | ✓ | ✓ |  | ✓ |
| Tapered clamping hub (axial) | ✓ |  |  | ✓ |  |
| **Drive interface** |  |  |  |  |  |
| Shaft |  | ✓ | ✓ | ✓ | ✓ |
| Flange | ✓ |  |  |  |  |
| **Output interface** |  |  |  |  |  |
| Shaft | ✓ | ✓ | ✓ | ✓ | ✓ |

| Document name | Document type | Language | Downloads |
|---|---|---|---|
| ![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-ACCESSORIES-EN-231b819c98db.webp "alpha Accessories Product Catalog") alpha Accessories Product Catalog | Brochure /Catalog | English | [ Download (8 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=933&dl=1&st=1&lg=2&token=b82b74cb226714d579155e23623213b49879d464)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=933&st=1&lg=2&token=51c3395b7d59c6c5a1f91fb75f5e42a37d8dce6c) |
| ![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-ACCESSORIES-COUPLINGS-EN-aaf5d0dfd88b.webp "alpha Accessories Product Catalog – Couplings") alpha Accessories Product Catalog – Couplings | Brochure /Catalog | English | [ Download (4 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=931&dl=1&st=1&lg=2&token=1a9fd03ced87339f28f8c52cf836c2315c2a1c07)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=931&st=1&lg=2&token=4dc9af5084b172e2249e3adc68a1da92670c4f79) |
| ![Elastomer couplings, Elastomer couplings ELT, Metal bellows couplings, Metal bellows couplings BCT, Torque limiters, Torque limiters TL1](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ORDER-INFORMATION-COUPLINGS-EN-b98725ed1683.webp "Ordering codes information Couplings") Ordering codes information Couplings  Elastomer couplings, Elastomer couplings ELT, Metal bellows couplings, Metal bellows couplings BCT, Torque limiters, Torque limiters TL1 | Brochure /Catalog | English | [ Download (138 B) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1131&dl=1&st=1&lg=2&token=bb01bcee5d4202b065d29c8c3f0b38d4cdb5b7b5)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1131&st=1&lg=2&token=359d96a10b0489187854b00ec9f96ca7b9cd4189) |
| ![Assembly instructions BCH / BCL / BC2 / BC3 / BCT / BCT HIGH TORQUE](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/OPERATING-MANUAL-BCH-BCL-BC2-BC3-BCT-EN-2d871fc363cf.webp "Metal bellows couplings") Metal bellows couplings  Assembly instructions BCH / BCL / BC2 / BC3 / BCT / BCT HIGH TORQUE | Operating manual | English | [ Download (1 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1051&dl=1&st=1&lg=2&token=3356cd8057e853a104dd0fbb3f318e6ebd5cde10)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1051&st=1&lg=2&token=a2551e5ce802b8faac9cd344643df9919f334ada) |

<a id="c2273"></a>![](https://www.wittenstein-group.com/fileadmin/_processed_/9/c/csm_logo-sculpture_e38190faf6.webp)

 Contact us
------------

Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.

[info@wittenstein.co.uk](#)

[ +44 1275 395-600 ](tel:+441275395-600)

[ To the contact form ](https://www.wittenstein-group.com/en-uk/contact-locations/contact)

![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/c/f/csm_METALBELLOWS-COUPLING-IMAGE_ed8fd00361.webp)

 Precise transmission

 High torsional rigidity

 Maintenance-free

 Related products
------------------

![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/5/c/csm_CVS-IMAGE_67ec06bd5b.webp)##### [ CVS ](https://www.wittenstein-group.com/en-uk/product/cvs)

alpha Basic Line

Ratio7 – 40Max. torque68 – 301 NmBacklash≤ 15 arcmin

![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/8/e/csm_NPT-IMAGE_31f27022bd.webp)##### [ NPT ](https://www.wittenstein-group.com/en-uk/product/npt)

alpha Value Line

Ratio3 – 100Max. torque18 – 700 NmBacklash≤ 8 arcmin