RULAND MANUFACTURINGAluminum Balanced Shaft Collars

RULAND MANUFACTURING Balanced Shaft Collar: 2-Piece, Metric, Round, Clamp-On, 21 mm Bore Dia

SKU 3G-OTH-133747

Also listed as: MSPB21A · MSPB 21 A

Brand

RULAND MANUFACTURING

Item

Balanced Shaft Collar: 2-Piece, Metric, Round, Clamp-On, 21 mm Bore Dia

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

MSPB-21-A 

Type

Metric, Round, Clamp-On, 2024 

Bore Dia

21 mm 

Technical Documents

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RULAND MANUFACTURING Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RULAND MANUFACTURING Balanced Shaft Collar is a 2-piece, metric, round, clamp-on aluminum shaft collar with a 21 mm bore diameter, made from 2024 material (MPN MSPB-21-A). 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 a trust anchor.

Frequently Asked Questions

What is a Ruland Manufacturing balanced shaft collar used for?

A Ruland Manufacturing balanced shaft collar, like the MSPB-21-A, is used to secure components on a shaft in high-speed rotating applications. Its 2-piece clamp-on design provides precise positioning without marring the shaft, and the 2024 aluminum construction minimizes vibration in machinery.

What are the specifications of the Ruland MSPB-21-A shaft collar?

The Ruland MSPB-21-A is a metric, round, 2-piece clamp-on balanced shaft collar with a 21 mm bore diameter. It is made from 2024 aluminum, offering a lightweight yet strong solution for dynamic balancing. The part number is MSPB-21-A, and it is designed for precision shaft mounting.

Where to buy Ruland Manufacturing shaft collars worldwide?

3G Electric supplies Ruland Manufacturing shaft collars like the MSPB-21-A to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this balanced shaft collar for your industrial application.

How to install a 2-piece clamp-on shaft collar?

To install a 2-piece clamp-on shaft collar like the Ruland MSPB-21-A, first clean the shaft and collar bore. Place the collar halves around the shaft, align them, then tighten the screws evenly to the manufacturer's torque specification. This ensures secure clamping without damaging the shaft surface.

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 aluminum balanced shaft collars. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all RULAND MANUFACTURING products →Contact our engineers →