Rigid Shaft Couplings

Pacific International Bearing Products offers rigid shaft couplings in one-piece, two-piece, and set screw designs, with or without keyways. These couplings provide a solid, zero-backlash connection for aligned shafts, making them ideal for high-precision and torque-heavy applications. Show details

FREQUENTLY ASKED QUESTIONS

What is a rigid shaft coupling?

A rigid shaft coupling is a solid connector that joins two accurately aligned shafts so they operate as a single unit. It provides a zero-backlash, high-torsional-stiffness connection for applications where misalignment is minimal and precise shaft positioning is required.

When should I use a rigid coupling instead of a flexible coupling?

Rigid couplings are best suited for systems where the driver and driven shafts can be accurately aligned and where maximum torque capacity and positioning accuracy are more important than misalignment compensation. They are commonly used in test stands, precision indexing equipment, and other torque-heavy, high-precision drives.

What bore sizes and configurations are available?

Standard rigid shaft couplings are offered in straight and step-bore configurations with shaft sizes from 1/8″ to 2″ and 3 mm to 50 mm. Step bores and inch-to-metric conversions simplify connecting dissimilar shaft diameters in new designs and retrofit installations.

Which materials and designs can I choose from?

Couplings are available in lightweight 2024 aluminum, durable 1215 lead-free steel, and corrosion-resistant 303 stainless steel. Design options include one-piece, two-piece, and set screw styles, with or without keyways, to match different mounting and service requirements.

Are these rigid couplings RoHS3 and REACH compliant?

Yes. All standard rigid shaft couplings in this line are manufactured to meet RoHS3 and REACH compliance standards, making them suitable for use in regulated and global markets.

How are the couplings marked for identification?

Each coupling is clearly marked with bore size for quick identification during assembly and maintenance, helping reduce installation errors and downtime.

Rigid Shaft Couplings

SPX-16-12-F

$106.88 / each

SPX-18-18-SS

$292.41 / each

SPX-16-12-SS

$248.35 / each

SPX-19-16-F

$187.07 / each

SPX-19-19-F

$150.59 / each

SPX-19-19-SS

$380.29 / each

SPX-2-2-SS

$185.57 / each

SPX-20-16-F

$156.98 / each

SPX-20-16-SS

$362.27 / each

SPX-20-20-F

$137.58 / each

SPX-28-28-SS

$1588.89 / each

SPX-19-16-SS

$437.55 / each

FREQUENTLY ASKED QUESTIONS

Filters

Brand

Length (L)

O.D. (D)

Material

Bore (B1)

Bore (B2)

Joint Outer Diameter (OD)

Length (L)

Product

Files

Price

SPX-16-12-F

$106.88 / each

SPX-18-18-SS

$292.41 / each

SPX-16-12-SS

$248.35 / each

SPX-19-16-F

$187.07 / each

SPX-19-19-F

$150.59 / each

SPX-19-19-SS

$380.29 / each

SPX-2-2-SS

$185.57 / each

SPX-20-16-F

$156.98 / each

SPX-20-16-SS

$362.27 / each

SPX-20-20-F

$137.58 / each

SPX-28-28-SS

$1588.89 / each

SPX-19-16-SS

$437.55 / each

FREQUENTLY ASKED QUESTIONS

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