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Small aluminum jaw coupling hub with clamp-on bore

Ruland Manufacturing

Ruland Manufacturing JC16-6-A Jaw Coupling Hub 3/8 in Bore

SKU CH-JB45-3ZNZ9

Aluminium jaw coupling hub with a 3/8 in round bore, clamp-on locking, 1 in outside diameter and 8,000 RPM rating

  • Clamp-on locking secures the hub without a keyway
  • Aluminium hub keeps rotating mass low at 8,000 RPM
  • Curved jaw profile allows angular misalignment while transmitting torque
  • Fail-safe design continues to drive if the elastomer spider fails
  • Bore tolerance +0.002/-0.000 in ensures precise shaft fit

Precision Jaw Coupling Hub for JC16 Systems

This aluminum hub fits JC16 jaw couplings with a 3/8 in round bore and clamp-on shaft locking. It supports speeds up to 8,000 RPM and carries a fail-safe design for reliable power transmission. The bore tolerance is +0.002/-0.000 in for accurate shaft alignment.

Suitable for Light-Duty Inch-Series Drivelines

This hub serves builders assembling or repairing JC16 curve-jaw couplings on 3/8 in shafts where a compact 1 in outside diameter is required. It is not suited for applications needing a keyway connection, metric bores, or coupling sizes other than JC16. Buyers requiring different bore diameters or locking styles must select another hub.

3/8 Inch Round Bore with Clamp-On Locking

The bore diameter and locking method are the critical specifications that determine fit. This hub accepts a 3/8 in round shaft secured by an M3 clamp screw, with a shaft tolerance of +0.0000/-0.0005 in. Verify these dimensions match your shaft exactly before ordering.

Highlights

  • Clamp-on locking secures the hub without a keyway
  • Aluminium hub keeps rotating mass low at 8,000 RPM
  • Curved jaw profile allows angular misalignment while transmitting torque
  • Fail-safe design continues to drive if the elastomer spider fails
  • Bore tolerance +0.002/-0.000 in ensures precise shaft fit

Specifications

No published specifications for this item yet.

Questions about this item

Which spider insert size matches the JC16 hub for the coupling to work?

Use a JC16 size spider insert; the hub is built for that coupling size and will not mesh with other sizes.

Will the 3/8 in bore clamp onto a shaft held to +0.0000/-0.0005 in tolerance?

Yes, the clamp-on hub is designed for shafts within that tolerance range and the bore tolerance is +0.002/-0.000 in.

How can I confirm the hub is running true after installation?

At up to 8,000 RPM the assembly should run without vibration; check that the clamp screw is tight and the spider seats fully in the curved jaws.

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