RULAND MANUFACTURING Motion Control Coupling: 1/2 in x 1/2 in Bore Dia, 1 5/16 in OD
The RULAND MANUFACTURING Motion Control Coupling (MPN DCD21-8-8-A) is a double disc coupling for round shafts with a 1/2 in x 1/2 in bore diameter and 1 5/16 in OD. It features an aluminum hub and center spacer with…
SKU 3G-OTH-145283
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Product Description
The RULAND MANUFACTURING Motion Control Coupling (MPN DCD21-8-8-A) is a double disc coupling for round shafts with a 1/2 in x 1/2 in bore diameter and 1 5/16 in OD. It features an aluminum hub and center spacer with stainless steel discs, and has 2 pieces with a center spacer. This inch-sized coupling has same bore dimensions and is designed for motion control applications.
Frequently Asked Questions
What is a RULAND MANUFACTURING double disc coupling used for?
A RULAND MANUFACTURING double disc coupling, like the DCD21-8-8-A, is used in motion control applications to connect two rotating shafts while compensating for misalignment. It transmits torque smoothly with zero backlash, making it ideal for precision positioning systems, servo motors, and encoders in industrial automation.
What are the specifications of the RULAND MANUFACTURING DCD21-8-8-A coupling?
The RULAND MANUFACTURING DCD21-8-8-A is a double disc coupling with a 1/2 in x 1/2 in bore diameter and 1 5/16 in OD. It has an aluminum hub and center spacer with stainless steel discs, is inch-sized, and features same bore dimensions. The coupling has 2 pieces with a center spacer for motion control.
Where to buy a RULAND MANUFACTURING DCD21-8-8-A coupling worldwide?
You can source the RULAND MANUFACTURING DCD21-8-8-A double disc coupling worldwide through 3G Electric. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this motion control coupling.
How to select a double disc coupling for a round shaft?
To select a double disc coupling for a round shaft, match the bore diameter to your shaft size—here 1/2 in—and ensure the OD fits your space. Consider torque requirements, misalignment tolerance, and material: aluminum hubs with stainless steel discs offer good corrosion resistance and low inertia for motion control applications.
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3G Electric supplies RULAND MANUFACTURING double disc couplings for round shafts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















