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Black anodized 6061 aluminium quick-clamp shaft collar 3 in bore

Ruland Manufacturing

Ruland Manufacturing QCL-48-A Shaft Collar 3 in Black Anodized 6061 Aluminum

SKU CH-KTRX-P1PPT

A 3-inch bore quick-clamp shaft collar machined from black anodized 6061 aluminium with an M6 stainless-steel screw, rated from -40 to 200 degrees Fahrenheit

  • TypeCouplings, Collars & Adapters
  • Quick-clamp locking speeds shaft installation
  • Black anodized 6061 aluminium resists corrosion
  • Single-piece design simplifies assembly
  • Stainless M6 screw holds at high torque
  • Rated from minus 40 to 200 degrees F

Quick-Clamp Shaft Collar for 3-Inch Shafts

The Ruland Manufacturing QCL-48-A is a one-piece quick-clamp shaft collar designed for 3-inch diameter shafts. It suits maintenance technicians and machine builders who need rapid, tool-free positioning on inch-series equipment. The collar is not intended for applications requiring a two-piece split design or a set-screw locking method.

Simple Installation with Single M6 Clamp Screw

Installation is straightforward: open the clamp, slide the collar onto the shaft, and tighten the single M6 socket-head screw. The screw is made from 18-8 300 series stainless steel for corrosion resistance. Over-tightening the clamp can distort the 6061 aluminium body and reduce holding power, so apply only the torque needed to prevent axial movement.

Holds 3-Inch Shafts Within a -40 to 200 °F Range

The plain bore fits a 3-inch shaft with an outside diameter of 4 47/64 inches and a width of 187/250 inches. The black anodised 6061 aluminium construction provides a clearance diameter of 4.724 inches and operates reliably from -40 to 200 degrees F. It is not suited for shafts larger than 3 inches or environments exceeding the stated temperature limits.

Highlights

  • Quick-clamp locking speeds shaft installation
  • Black anodized 6061 aluminium resists corrosion
  • Single-piece design simplifies assembly
  • Stainless M6 screw holds at high torque
  • Rated from minus 40 to 200 degrees F

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

How can I verify the QCL-48-A shaft collar is clamping correctly after installation?

After tightening the M6 screw, the collar should hold the 3 in bore firmly without axial movement; the 18-8 stainless screw will not loosen under vibration within the -40 to 200 °F range.

What comes in the box with the QCL-48-A and what must I purchase separately?

The package contains one black anodized 6061 aluminium quick-clamp collar with its M6 stainless screw installed; no additional hardware, shims or tools are included.

Which version of the QCL-48-A should I choose for a 3 inch shaft?

This model is the 3 in bore version (outside diameter 4 47/64 in, width 187/250 in, clearance diameter 4.724 in); select it when your shaft measures exactly 3 inches.

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