RULAND MANUFACTURINGDouble Disc Couplings for Round Shafts

RULAND MANUFACTURING Disc Coupling: 1 3/4 in x 1 1/4 in Bore Dia, 3 1/8 in OD, Round

SKU 3G-OTH-145314

Also listed as: DCD502820A · DCD50 28 20 A

Brand

RULAND MANUFACTURING

Item

Disc Coupling: 1 3/4 in x 1 1/4 in Bore Dia, 3 1/8 in OD, Round

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

RULAND MANUFACTURING

Manufacturer Part Number

DCD50-28-20-A 

Type

Round, Clamp On 

3 1/8 in 

Technical Documents

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RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RULAND MANUFACTURING DCD50-28-20-A is a double disc coupling for round shafts with a 1 3/4 in x 1 1/4 in bore diameter and a 3 1/8 in outer diameter. It features a clamp-on design, an aluminum hub and center spacer, and stainless steel discs. This coupling has two discs with a center spacer and is designed for different bore dimensions in inch sizes.

Frequently Asked Questions

What is a RULAND MANUFACTURING DCD50-28-20-A disc coupling used for?

The RULAND MANUFACTURING DCD50-28-20-A double disc coupling connects two round shafts with different bore diameters (1 3/4 in and 1 1/4 in) while accommodating misalignment. It is used in motion control, packaging, and automation equipment where zero backlash and high torsional stiffness are required.

What are the specifications of the RULAND MANUFACTURING DCD50-28-20-A?

The RULAND MANUFACTURING DCD50-28-20-A has a 3 1/8 in outer diameter, aluminum hub and center spacer, and stainless steel discs. It features a clamp-on round design with two discs and a center spacer, supporting inch-size bores of 1 3/4 in and 1 1/4 in.

Where to buy a RULAND MANUFACTURING DCD50-28-20-A worldwide?

3G Electric supplies the RULAND MANUFACTURING DCD50-28-20-A disc coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this precision coupling.

How to select a double disc coupling for different bore sizes?

When selecting a double disc coupling like the RULAND MANUFACTURING DCD50-28-20-A, match the bore diameters to your shaft sizes (here 1 3/4 in and 1 1/4 in). Ensure the outer diameter (3 1/8 in) fits your space, and choose clamp-on style for secure, zero-backlash grip on round shafts.

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 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.

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