Ruland Bellows Coupler Aluminium Clamp Style 8 mm Bore, 25.4 mm OD, 33.3 mm Length MBC25-8-8-A

Ruland MBC25-8-8-A is a high precision bellows coupling designed to provide reliable power transmission between shafts with minimal backlash and vibration. Featuring 8 mm bores on both ends and an outer diameter of 25.4 mm, this 33.3 mm long coupler utilizes anodized aluminium hubs for lightweight strength and stainless steel bellows to flexibly accommodate misalignments.

The clamp style hubs ensure secure, repeatable assembly using M3 metric screws, supporting speeds up to 10,000 rpm and torque ratings up to 6.8 Nm. Its balanced design reduces vibration, making it suitable for high-speed servo and stepper motor applications requiring accurate shaft positioning and alignment.

The coupling accommodates angular misalignment up to 1.5°, parallel misalignment of 0.1 mm, and axial movement of 0.3 mm, enhancing machine resilience and lifespan. Operating temperature is rated from -40°C to 93°C, meeting RoHS3 and REACH standards, with screws conforming to DIN 912 12.9 quality specifications.

Manufactured in the United States under stringent quality controls, this bellows coupling is machined from solid bar stock sourced exclusively from North American mills. Its low inertia and torsional rigidity make it optimal for encoder, servo, and stepper motor applications requiring precise, reliable torque transmission.

The coupler features 8 mm bore sizes on both ends and a 25.4 mm outer diameter. It has a robust 33.3 mm length making it suitable for compact shaft connections. The anodized aluminium hubs combined with stainless steel bellows provide durability and torsional rigidity.

Supports maximum speeds up to 10,000 rpm with torque rating of 6.8 Nm. Accommodates misalignment with an axial tolerance of 0.3 mm, angular of 1.5°, and parallel of 0.1 mm. Designed with clamp style hubs and metric M3 screws for secure attachment.

Ideal for precise positioning applications including stepper motors, servo motors, and encoders. Operates effectively within temperature ranges from -40°C to 93°C. Manufactured under strict quality controls in the United States.

This Mechanical Power Transmission Coupler is part of EnvMart’s industrial components range, suitable for automation, robotics, manufacturing machinery, and instrumentation. Explore similar high-quality mechanical couplers and flexible bridge components in EnvMart’s mechanical transmission section.