RULAND MANUFACTURINGZero-Backlash Curved Jaw Spiders

RULAND MANUFACTURING Jaw Coupling Insert: JC12/JS12/MJC19/MJS19 Coupling Size

The RULAND MANUFACTURING Jaw Coupling Insert, model JD12/19-85B, is a zero-backlash curved jaw spider for coupling sizes JC12/JS12/MJC19/MJS19. It has a 3/4 in outside diameter and a power rating of 0.0159 hp.

SKU 3G-OTH-138961

Also listed as: JD121985B · JD12 19 85B · JD12-19-85B

Brand

RULAND MANUFACTURING

Item

Jaw Coupling Insert: JC12/JS12/MJC19/MJS19 Coupling Size

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

JD12/19-85B 

Type

Coupling Size 

Outside Dia

3/4 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 JD12/19-85B jaw coupling insert used for?

The RULAND MANUFACTURING JD12/19-85B is a zero-backlash curved jaw spider used to connect shafts in motion-control systems. It fits coupling sizes JC12/JS12/MJC19/MJS19 and is ideal for precision applications requiring accurate torque transmission without play, such as servo motors and encoders.

What are the specifications of the RULAND MANUFACTURING JD12/19-85B?

The JD12/19-85B has a 3/4 in outside diameter and a power rating of 0.0159 hp. It is a zero-backlash curved jaw spider designed for coupling sizes JC12/JS12/MJC19/MJS19. The manufacturer part number is JD12/19-85B, and it is made by RULAND MANUFACTURING.

Where to buy the RULAND MANUFACTURING JD12/19-85B worldwide?

3G Electric supplies the RULAND MANUFACTURING JD12/19-85B jaw coupling insert worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this component to any country.

How to select the correct RULAND MANUFACTURING jaw coupling insert?

To select the correct RULAND MANUFACTURING jaw coupling insert, match the coupling size (e.g., JC12/JS12/MJC19/MJS19) and outside diameter (3/4 in) to your shaft dimensions. Ensure the power rating (0.0159 hp) meets your application's torque requirements. For zero-backlash needs, choose a curved jaw spider like the JD12/19-85B.

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 zero-backlash curved jaw spiders. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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