DCD12-4-4-A, Ruland, Clamp double disc coupling, zero-backlash

Imperial, Aluminium, Disc Coupling, Clamp style, Double disc coupling, Bored

Brand Ruland
Mfr Part No. DCD12-4-4-A
Acorn Code DCD12-4-4-A-RULAND
HS Code 8483 50 80 90
COO United States (US)



Ruland DCD-A is a clamp double disc coupling.

It is zero-backlash and has a balanced design for reduced vibration at high speeds. The double disc design is comprised of two anodized aluminium hubs, two sets of thin stainless steel disc springs, and a centre spacer allowing each disc to bend individually and accommodate all types of misalignment.

DCD-A is lightweight and has low inertia making it well suited 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 DCD-A to be torsionally rigid and an excellent fit for precise positioning stepper servo applications commonly found in semiconductor, solar, printing, machine tool, and test and measurement systems. It is machined from solid bar stock that is sourced exclusively from North American mills and RoHS3 and REACH compliant.


Product Attributes
Manufacturer Product Code DCD12-4-4-A
Basic Product Description Clamp double disc coupling, zero-backlash
Measurement Imperial
UOM Each
Size 12
Coupling Type Double disc coupling
Material Aluminium
Lock Type Clamp style
Bore Type Bored
Bore (B1) mm 6.35
Small Bore (B2)  mm 6.35
Bore (B1) inch 1/4
Small Bore (B2) inch 1/4
Weight (Kg) 0.019
Ma-1 Material 1 Aluminium

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