We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

RULAND MANUFACTURING Motion Control Coupling: 1/2 in x 1/2 in Bore Dia, 1 5/16 in OD - Double Disc Couplings for Round Shafts
RULAND MANUFACTURINGDouble Disc Couplings for Round Shafts

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

Also listed as: DCD2188A · DCD21 8 8 A

Brand
RULAND MANUFACTURING
Item
Motion Control Coupling: 1/2 in x 1/2 in Bore Dia, 1 5/16 in OD
Category
Double Disc Couplings for Round Shafts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

RULAND MANUFACTURING
Manufacturer Part Number
DCD21-8-8-A
Type
Round
OD
1 5/16 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

RULAND MANUFACTURING Products
3G Electric (S) Pte. Ltd. — Singapore

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Double disc coupling with aluminum hub and center spacer, stainless steel discs. Bore diameters 1/2 in and 3/8 in, outer diameter 1 5/16 in. Designed for motion control applications requiring precise torque transmission and misalignment compensation between two round shafts
RULAND MANUFACTURING
Double disc coupling with aluminum hub and center spacer, stainless steel discs. Bore diameters 1/2 in and 3/8 in, outer diameter 1 5/16 in. Designed for motion control applications requiring precise torque transmission and misalignment compensation between two round shafts
RULAND MANUFACTURING Motion Control Coupling: 5/8 in x 1/2 in Bore Dia, 1 5/8 in OD, Round, Clamp On (MPN DCD26-10-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Motion Control Coupling: 5/8 in x 1/2 in Bore Dia, 1 5/8 in OD, Round, Clamp On (MPN DCD26-10-8-A)
RULAND MANUFACTURING Motion Control Coupling: 3/8 in x 3/8 in Bore Dia, 1 5/16 in OD, Round (MPN DCD21-6-6-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Motion Control Coupling: 3/8 in x 3/8 in Bore Dia, 1 5/16 in OD, Round (MPN DCD21-6-6-A)
Double disc coupling with aluminum hub and center spacer, stainless steel discs. Bore diameters 5/8 in and 1/2 in, OD 1 5/16 in. Accommodates misalignment in motion control applications connecting two round shafts
RULAND MANUFACTURING
Double disc coupling with aluminum hub and center spacer, stainless steel discs. Bore diameters 5/8 in and 1/2 in, OD 1 5/16 in. Accommodates misalignment in motion control applications connecting two round shafts
Double disc coupling with 5/8 in x 5/8 in bore diameter and 1 5/8 in OD. Clamp-on design with aluminum hub and center spacer, stainless steel discs. Used to connect two round shafts in motion control applications, accommodating misalignment while transmitting torque
RULAND MANUFACTURING
Double disc coupling with 5/8 in x 5/8 in bore diameter and 1 5/8 in OD. Clamp-on design with aluminum hub and center spacer, stainless steel discs. Used to connect two round shafts in motion control applications, accommodating misalignment while transmitting torque
RULAND MANUFACTURING Motion Control Coupling: 3/4 in x 1/2 in Bore Dia, 1 5/8 in OD, Round, Clamp On (MPN DCD26-12-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Motion Control Coupling: 3/4 in x 1/2 in Bore Dia, 1 5/8 in OD, Round, Clamp On (MPN DCD26-12-8-A)

More from RULAND MANUFACTURING

View all RULAND MANUFACTURING parts
Double disc coupling with 8 mm x 8 mm bore diameters and 25.4 mm outer diameter. Clamp-on round design with aluminum hubs, stainless steel disc pack, and center spacer. Used in motion control systems to connect rotating shafts while compensating for misalignment with zero backlash
RULAND MANUFACTURING
Double disc coupling with 8 mm x 8 mm bore diameters and 25.4 mm outer diameter. Clamp-on round design with aluminum hubs, stainless steel disc pack, and center spacer. Used in motion control systems to connect rotating shafts while compensating for misalignment with zero backlash
Double disc coupling with a 25 mm x 25 mm bore diameter and 69.9 mm outer diameter. Features a clamp-on round design with an aluminum hub and center spacer, and stainless steel discs. Suitable for connecting two rotating shafts in motion control and automation equipment where zero backlash and high torsional stiffness are required
RULAND MANUFACTURING
Double disc coupling with a 25 mm x 25 mm bore diameter and 69.9 mm outer diameter. Features a clamp-on round design with an aluminum hub and center spacer, and stainless steel discs. Suitable for connecting two rotating shafts in motion control and automation equipment where zero backlash and high torsional stiffness are required
This double disc coupling connects round shafts with a 1 1/2 in x 35 mm bore diameter and 3 1/8 in OD. It features a clamp-on design with an aluminum hub and center spacer, and stainless steel discs. Suitable for applications requiring zero backlash and high torsional stiffness, such as precision motion control and automation equipment
RULAND MANUFACTURING
This double disc coupling connects round shafts with a 1 1/2 in x 35 mm bore diameter and 3 1/8 in OD. It features a clamp-on design with an aluminum hub and center spacer, and stainless steel discs. Suitable for applications requiring zero backlash and high torsional stiffness, such as precision motion control and automation equipment
Double disc coupling with 1/2 in x 1/2 in bore diameter and 1 in outer diameter. Features a round clamp-on design with aluminum hubs and stainless steel discs. Used in motion control applications to connect two round shafts, compensating for misalignment while transmitting torque
RULAND MANUFACTURING
Double disc coupling with 1/2 in x 1/2 in bore diameter and 1 in outer diameter. Features a round clamp-on design with aluminum hubs and stainless steel discs. Used in motion control applications to connect two round shafts, compensating for misalignment while transmitting torque
This double disc coupling connects two round shafts with bore diameters of 1 1/2 in and 1 in. It features a round clamp-on design with aluminum hubs and center spacer, and stainless steel disc packs. The coupling accommodates parallel and angular misalignment while providing zero-backlash torque transmission. Typical applications include motion control, packaging, and automation equipment
RULAND MANUFACTURING
This double disc coupling connects two round shafts with bore diameters of 1 1/2 in and 1 in. It features a round clamp-on design with aluminum hubs and center spacer, and stainless steel disc packs. The coupling accommodates parallel and angular misalignment while providing zero-backlash torque transmission. Typical applications include motion control, packaging, and automation equipment
Double disc coupling with 19.1 mm outer diameter, 6 mm and 5 mm bore diameters, and clamp-on round design. Constructed with aluminum hubs and center spacer, and stainless steel discs. Used to connect two rotating shafts while compensating for misalignment in motion control applications
RULAND MANUFACTURING
Double disc coupling with 19.1 mm outer diameter, 6 mm and 5 mm bore diameters, and clamp-on round design. Constructed with aluminum hubs and center spacer, and stainless steel discs. Used to connect two rotating shafts while compensating for misalignment in motion control applications
Double disc coupling with aluminum hubs and stainless steel discs, featuring a clamp-on design for round shafts. Bore diameters are 16 mm and 14 mm, with a 41.3 mm outer diameter. Used in motion control applications to connect rotating shafts while compensating for misalignment
RULAND MANUFACTURING
Double disc coupling with aluminum hubs and stainless steel discs, featuring a clamp-on design for round shafts. Bore diameters are 16 mm and 14 mm, with a 41.3 mm outer diameter. Used in motion control applications to connect rotating shafts while compensating for misalignment
Double disc coupling for round shafts with 20 mm and 12 mm bore diameters and 41.3 mm outer diameter. Clamp-on design with two-piece assembly and center spacer. Constructed of aluminum with stainless steel hardware. Used in motion control applications to connect rotating shafts while compensating for misalignment
RULAND MANUFACTURING
Double disc coupling for round shafts with 20 mm and 12 mm bore diameters and 41.3 mm outer diameter. Clamp-on design with two-piece assembly and center spacer. Constructed of aluminum with stainless steel hardware. Used in motion control applications to connect rotating shafts while compensating for misalignment