Ruland Aluminium Set Screw Style Flexible Coupler 6.35mm Bore, 19.05mm OD, 9.65mm Length OST12-4-A

Ruland OST12-4-A Aluminium Set Screw Style Flexible Coupler offers a precision solution for mechanical power transmission with a 6.35mm bore diameter, 19.05mm outside diameter, and 9.65mm hub length. This coupling is engineered to accommodate slight misalignments in shafts, including axial, angular, and parallel variations while maintaining torque transmission efficiency and reliability.

Manufactured from black anodised aluminium, the hubs provide excellent strength-to-weight ratio and corrosion resistance. The set screw design enables easy installation and secure attachment to shafts finished with no keyway. The replaceable centre torque discs, fabricated from durable acetal or nylon, act as torque limiters, protecting connected machinery by breaking cleanly under overload conditions.

Ideal for light industrial and motion control applications, these Oldham style flexible couplers support maximum rotational speeds of up to 4500 rpm. They are especially well suited for use with stepper or servo motors where low inertia and electrical isolation are essential.

The product complies with international RoHS and REACH environmental standards, assuring safe use in multiple industrial environments.

Note that this product is not supplied as a complete unit; an assembly requires two hubs and one torque disc. Proper securing is achieved with one set screw on each end for 13mm and 19mm anodised aluminium hubs.

Designed and manufactured in the United States, the Ruland OST12-4-A coupler delivers dependable performance in mechanical power transmission tasks. Constructed from anodised aluminium for lightweight and corrosion resistance.

Designed as a set screw style Oldham coupling hub ideal for light industrial applications. Allows limited axial, angular, and parallel misalignment in shaft coupling. Maximum operating speed up to 4500 rpm for motion control use.

Bore finished with no keyway for secure set screw mounting. Complies with RoHS and REACH standards to ensure environmental safety. Features replaceable centre torque discs made from acetal or nylon. Suitable for use with 2 hubs and 1 torque disc per assembly.

Designed and manufactured in the United States. Explore the comprehensive range of Mechanical Power Transmission Couplers and other mechanical components at EnvMart for your industrial and manufacturing needs.