RULAND MANUFACTURINGClamp-On Bellows Shaft Couplings for Keyed Shafts

RULAND MANUFACTURING Bellows Coupling: 30 mm Bore Dia 1, 20 mm Bore Dia 2

This RULAND MANUFACTURING MBCK57-30-20-A is a clamp-on bellows shaft coupling for keyed shafts, featuring a 30 mm bore diameter 1 and a 20 mm bore diameter 2 with a 6 mm x 8 mm keyway size 1. It is constructed from…

SKU 3G-OTH-134927

Also listed as: MBCK573020A · MBCK57 30 20 A

Brand

RULAND MANUFACTURING

Item

Bellows Coupling: 30 mm Bore Dia 1, 20 mm Bore Dia 2

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

MBCK57-30-20-A 

Type

20 mm Bore Dia 2, 6 mm x 8 mm Keyway Size 1 

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 MBCK57-30-20-A bellows coupling used for?

This clamp-on bellows shaft coupling is used to connect keyed shafts in motion-control applications, compensating for misalignment while transmitting torque. It is common in precision automation, packaging, and machine-tool equipment where zero backlash and high torsional stiffness are required.

What are the specifications of the RULAND MANUFACTURING MBCK57-30-20-A?

The MBCK57-30-20-A has a 30 mm bore diameter 1 and a 20 mm bore diameter 2 with a 6 mm x 8 mm keyway size 1. It is made of stainless steel, uses metric sizing, and has same bore dimensions. The manufacturer part number is MBCK57-30-20-A.

Where to buy the RULAND MANUFACTURING MBCK57-30-20-A worldwide?

3G Electric supplies the RULAND MANUFACTURING MBCK57-30-20-A bellows coupling worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct RULAND MANUFACTURING bellows coupling for keyed shafts?

Select a coupling by matching bore diameters to your shaft sizes and ensuring the keyway dimensions align with your shaft keys. For the MBCK57-30-20-A, verify a 30 mm shaft on one side and a 20 mm shaft on the other, both with keyways. RULAND MANUFACTURING offers stainless steel construction for corrosion resistance.

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 clamp-on bellows shaft couplings 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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