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Miniature Couplings


Zero-backlash miniature couplings provide today's high-speed, automated manufacturing applications with servo-quality stiffness, low inertia and an exceptionally long equipment life. Coupled with servomotors, stepper motors or gearboxes, our lightweight, stainless steel miniature couplings are ideal for machines with space limitations, and are widely used on encoders, robots, linear slides and other electrical equipment.

Rimtec's miniature couplings are uniquely designed to compensate for misalignment of the motor shaft when assembled, and to self-loosen and easily release when disassembled. Compared to traditional taper locks, this clamping style is extremely cost-effective, as it achieves highly accurate manufacturing tolerances, reduces bearing wear and machine downtime, and nearly eliminates the need to inventory replacement drives and other expensive assembly equipment.

The line transmits torque from 0.9 lb-in (0.1Nm) to 89 lb-in (10 Nm) on shaft sizes ranging from 1/32" (1 mm) to 7/8" (22 mm).

Benefits/features include:

Transmits torque without backlash
Provides servo-quality torsional stiffness, low inertia
Compensates for axial, radial and angular misalignment
Corrosion free
Reduces bearing wear and machine downtime
Standard stock sizes: 3/16", 1/4", 3/8", 1/2", 5/8", 3/4", 3 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm
Reliable and precise
Custom sizes may be special ordered


Four miniature coupling types are available:

DKN Miniature Metal Bellows Couplings with Collet Clamp

For dimensions and technical ratings, and/or mounting instructions, follow the hyperlinks above or use the pull-down menu at the top of the page.

If you’re not sure which product type best suits your unique application, try our online
selection guide, or feel free to contact our technical experts for assistance by filling out our application assistance/inquiry form.


Typical Applications

Miniature Couplings

Application Idea

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