Ruland, 25.4 mm OD 12 mm, 33.3 mm Length Coupler 12 mm

Bulk discount available

Subtotal (1 unit)*

$226.03

(exc. GST)

$248.63

(inc. GST)

Add to Basket
Select or type quantity
Orders below $60.00 (exc. GST) cost $12.95.
Temporarily out of stock
  • Shipping from 27 March 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 - 4$226.03
5 - 9$221.29
10 +$214.52

*price indicative

RS Stock No.:
174-7207
Mfr. Part No.:
MBS25-12-12-A
Brand:
Ruland
Find similar products by selecting one or more attributes.
Select all

Brand

Ruland

Product Type

Coupler

Outside Diameter

25.4 mm

Length

33.3mm

Maximum Speed

10000rpm

Torque Rating

6.8Nm

Misalignment - Angular

1.5°

Misalignment - Parallel

0.1mm

Style

Screw

Hub Material

Aluminium

Misalignment - Axial

0.3mm

Bellows Material

Stainless Steel

Minimum Operating Temperature

-40°C

Bore Size A

12mm

Bore Size B

12mm

Maximum Operating Temperature

93°C

Standards/Approvals

RoHS3, DIN 912 12.9, REACH

Screw Size

M4

COO (Country of Origin):
US
Ruland MBS25-12-12-A is a bellows coupling with 12mm x 12mm bores, 25.4mm OD, and 33.3mm length. It is zero-backlash and has a balanced design for reduced vibration at high speeds. MBS25-12-12-A is comprised of two anodized aluminum hubs and a stainless steel bellows. The bellows are able to flex while remaining rigid under torsional loads allowing for all types of misalignment to be accommodated. This bellows coupling is lightweight and has low inertia making it suitable for applications with speeds up to 10,000 RPM. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. Ruland manufactures MBS25-12-12-A to be torsionally rigid and an excellent fit for precise positioning stepper servo applications as well as encoders. It is machined from solid bar stock that is sourced exclusively from North American mills. MBS25-12-12-A is carefully manufactured in our Marlborough, MA factory under strict controls using proprietary processes.

Related links