RS PRO Beam Coupling, 12.7mm Outside Diameter, 4mm Bore, 19.1mm Length Flexible Beam Coupling

View all Flexible Couplings

Subtotal (1 unit)*

£21.34

(exc. VAT)

£25.61

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 10 unit(s) shipping from 27 October 2025
  • Plus 38 unit(s) shipping from 03 December 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£21.34

*price indicative

RS Stock No.:
132-147
Brand:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

Bore

4mm

Coupling Types

Beam Coupling

Outside Diameter

12.7mm

Length

19.1mm

Fastening Type

Clamping

Bellows Material

Aluminium

Series

BCB

COO (Country of Origin):
CN

RS PRO 4mm Aluminium BCB Flexible Beam Coupling


A BCB series beam coupling for use where a degree of motion is required between shafts. Each coupling is manufactured from hardwearing Aluminium as a single piece eliminating mechanical joints and possible failure points.

Designed for clamp fastening the constant velocity or CV coupling achieves a high torque capacity while exhibiting zero backlash for smooth and efficient power transmission.

The BCB coupling is easy to install featuring socket head cap screws at each end and is suitable for a wide range of applications. Applications include encoders, stepper motors, robotics, measuring instruments, servo systems, pumps, valves and fans.

Features and Benefits


BCB Beam coupling

4mm bore

12.7mm outer diameter

19.1mm length

Clamp fastening

One piece Aluminium 7075 A

Constant Velocity (CV)

High torque

Zero backlash

M2 cap screws at both ends

+0.025 mm / -0.000 mm bore tolerance

+0.000 mm / -0.013 mm recommended shaft tolerance

Why RS PRO?


RS PRO is the own brand of RS, offering professional quality products and solutions across all industries and technologies. Our product range is rigorously tested, inspected, and audited against demanding international standards to provide you with industrial-grade quality, at the right price. Making RS PRO your smart choice.

Related links