We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric - Zero-Backlash Curved Jaw Coupling Hubs
RULAND MANUFACTURINGZero-Backlash Curved Jaw Coupling Hubs

RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric

The RULAND MANUFACTURING MJS19-4-A is a zero-backlash curved jaw coupling hub in the MJS19 coupling size, made of metric aluminum with a 19.1 mm outside diameter. 3G Electric interprets customer demand and delivers…

SKU 3G-OTH-134229

Also listed as: MJS194A · MJS19 4 A

Brand
RULAND MANUFACTURING
Item
Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric
Category
Zero-Backlash Curved Jaw Coupling Hubs
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

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
MJS19-4-A
Type
Metric, Aluminum
Outside Dia
19.1 mm

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 MJS19-4-A is a zero-backlash curved jaw coupling hub in the MJS19 coupling size, made of metric aluminum with a 19.1 mm outside diameter. 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments—and far more—with specialist depth in combustion, pumps, and controls as an authorised distributor for brands like FBR, Interpump, Riello, Beckett, Schneider, ABB, Siemens, SKF, Festo, and Fluke.

Frequently Asked Questions

What is a Ruland MJS19-4-A zero-backlash curved jaw coupling hub used for?

The Ruland MJS19-4-A is a zero-backlash curved jaw coupling hub used to connect two shafts in motion-control applications, such as encoders, stepper motors, and light-duty positioning systems. It accommodates misalignment while transmitting torque smoothly. 3G Electric supplies this metric aluminum hub across 14 industrial departments.

What are the specifications of the Ruland MJS19-4-A coupling hub?

The Ruland MJS19-4-A is a metric aluminum zero-backlash curved jaw coupling hub with a 19.1 mm outside diameter. It is part of the MJS19 coupling size series. This hub is designed for use with a matching spider insert to form a complete jaw coupling. 3G Electric sources genuine Ruland components.

Where to buy a Ruland MJS19-4-A coupling hub worldwide?

3G Electric supplies the Ruland MJS19-4-A zero-backlash curved jaw coupling hub to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we interpret your demand and deliver genuine Ruland parts across all major regions.

How to select the correct Ruland jaw coupling hub for my application?

To select the correct Ruland jaw coupling hub, match the bore size to your shaft diameter, confirm the outside diameter (19.1 mm for MJS19), and choose the material (aluminum for low inertia). Ensure the spider insert matches the hub size and durometer for your torque and misalignment needs. 3G Electric can help specify the right combination.

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 coupling hubs. 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
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-5-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-5-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-8-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-12-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-12-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-10-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-10-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-20-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-20-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-14-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS41 Coupling Size, 41.3 mm Outside Dia, Metric, Aluminum (MPN MJS41-14-A)

More from RULAND MANUFACTURING

View all RULAND MANUFACTURING parts
RULAND MANUFACTURING Jaw Coupling Hub: MJC19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJC19-6-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJC19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJC19-6-A)
RULAND MANUFACTURING Jaw Coupling Hub: JC36 Coupling Size, 2 1/4 in Outside Dia, Inch, Aluminum (MPN JC36-20-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JC36 Coupling Size, 2 1/4 in Outside Dia, Inch, Aluminum (MPN JC36-20-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJC33 Coupling Size, 33.3 mm Outside Dia, Metric, Aluminum (MPN MJCC33-10-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJC33 Coupling Size, 33.3 mm Outside Dia, Metric, Aluminum (MPN MJCC33-10-A)
RULAND MANUFACTURING Jaw Coupling Hub: JS32 Coupling Size, 2 in Outside Dia, Inch, Aluminum, Curved (MPN JS32-14-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JS32 Coupling Size, 2 in Outside Dia, Inch, Aluminum, Curved (MPN JS32-14-A)
RULAND MANUFACTURING Jaw Coupling Hub: JS10 Coupling Size, 19/32 in Outside Dia, Inch, Aluminum (MPN JS10-3-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: JS10 Coupling Size, 19/32 in Outside Dia, Inch, Aluminum (MPN JS10-3-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJC33 Coupling Size, 33.3 mm Outside Dia, Metric, Aluminum (MPN MJC33-12-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJC33 Coupling Size, 33.3 mm Outside Dia, Metric, Aluminum (MPN MJC33-12-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJC19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJC19-8-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJC19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJC19-8-A)
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-6-A)
RULAND MANUFACTURING
RULAND MANUFACTURING Jaw Coupling Hub: MJS19 Coupling Size, 19.1 mm Outside Dia, Metric, Aluminum (MPN MJS19-6-A)