RULAND MANUFACTURINGSet Screw Oldham Coupling Hubs for Keyed Shafts

RULAND MANUFACTURING Motion Control Coupling Hub: 0.5° Angular Misalignment

The RULAND MANUFACTURING OSC21-8-A is a set screw Oldham coupling hub for keyed shafts, designed for motion control applications. It accommodates 0.5° angular misalignment and 0.006 in axial motion. This hub is part…

SKU 3G-OTH-151061

Also listed as: OSC218A · OSC21 8 A

Brand

RULAND MANUFACTURING

Item

Motion Control Coupling Hub: 0.5° Angular Misalignment

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

RULAND MANUFACTURING

Manufacturer Part Number

OSC21-8-A 

Axial Motion

0.006 in 

Technical Documents

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RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the RULAND MANUFACTURING OSC21-8-A coupling hub used for?

The RULAND MANUFACTURING OSC21-8-A is a set screw Oldham coupling hub for keyed shafts, used in motion control applications. It accommodates 0.5° angular misalignment and 0.006 in axial motion, making it suitable for precision positioning systems, encoders, and servo drives.

What are the specifications of the RULAND MANUFACTURING OSC21-8-A?

The RULAND MANUFACTURING OSC21-8-A is a set screw Oldham coupling hub from the OSC21 series. It handles 0.5° angular misalignment and 0.006 in axial motion. The manufacturer part number is OSC21-8-A, and it is designed for keyed shafts in motion control systems.

Where to buy the RULAND MANUFACTURING OSC21-8-A worldwide?

You can source the RULAND MANUFACTURING OSC21-8-A through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this motion control coupling hub.

How to select the correct RULAND MANUFACTURING Oldham coupling hub?

To select the correct RULAND MANUFACTURING Oldham coupling hub, match the shaft diameter and keyway size to your application. Consider the required misalignment capacity—the OSC21-8-A handles 0.5° angular and 0.006 in axial motion. Verify bore size and torque ratings from the manufacturer's catalog.

Used in

Common applications for RULAND MANUFACTURING

Automated packaging machinery — Ruland beam couplings (e.g., PSR20-8-5-A) for connecting servo motors to conveyor drive shafts.

CNC machine tools — Ruland rigid couplings (e.g., CLX-4-4-A) for precise alignment of ball screw assemblies.

Robotic arm joints — Ruland Oldham coupling hubs (e.g., OSC16-6-A) for accommodating axial motion in end-effector drives.

Pump and compressor systems — Ruland stainless steel shaft collars (e.g., CL-3-ST) for securing impeller shafts.

Printing press rollers — Ruland clamp-on beam couplings (e.g., PCR18-8-8-A) for synchronizing roller rotation with minimal backlash.

Material handling conveyors — Ruland set screw couplings (e.g., PSMR29-7-7-A) for linking gearboxes to drive rollers.

RULAND MANUFACTURING Products

3G Electric supplies RULAND MANUFACTURING set screw oldham coupling hubs for keyed shafts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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