Two-Piece Shaft Collars

Shaft collars are integral to the proper functioning of virtually every mechanical device or assembly. Simple shaft collars consist of a metal or plastic collar and set screws that apply pressure around a shaft. They serve as an attachment point between a shaft and a component and as mechanical stops. Because they are used in a wide range of applications and industries, manufacturers have developed a variety of shaft collar designs and configurations, including the two-piece shaft collar. 

Two-piece shaft collars are easy to install on shafts with inaccessible ends because they can be completely disassembled and reassembled around the shaft. This functionality allows them to be tightened more than single-piece collars creating greater compressive holding force for enhanced load-bearing capabilities. 

What Are Two-Piece Shaft Collars?

Two-piece shaft collars feature a split design that allows for easy installation and disassembly in applications where the shaft end is inaccessible. Unlike more traditional one-piece collars, two-piece shaft collars can be applied at any point along the shaft, eliminating the need to remove other components for installation, removal, or repair. The clamping power of a two-piece assembly is much greater than other collar assemblies, applying its full seating torque to the shaft which results in a more uniform distribution of force around the shaft. These attributes make two-piece shaft collars suitable for applications that require enhanced holding force and elevated shock-load resistance.

Uses of Two-Piece Shaft Collars

The convenience, versatility, and load-bearing strength of two-piece shaft collars make them ideal for use in a wide variety of applications, including: 

  • Automation Equipment: Two-piece shaft collars allow for fine control in the positioning and alignment of automation equipment, including pulleys, gears, bearings, and more. 
  • Heavy Machinery: Two-piece shaft collars provide direction and mechanical stops for actuators, cylinders, pistons, and other heavy machinery.
  • Laboratory Equipment: Laboratory equipment requires fine stops and spacers for precision operations. Two-piece shaft collars are used on clamps, frames, and tubing to provide precise control adjustments.
  • Medical Equipment: Medical equipment benefits from the use of precise two-piece shaft collars as guides, spacers, and stops for hospital beds, monitoring equipment, and imaging systems to fit strict industry standards.
  • Optical Instrumentation: Two-piece shaft collars are ideal for precision adjustments and stops for optical equipment in measuring and sensing applications.
  • Power Transmission: Two-piece shaft collars are incorporated into motion control equipment to ensure optimal positioning and accurate stopping points for pistons, cylinders, actuators, and other components. 

Benefits of Two-Piece Shaft Collars

Two-piece shaft collars offer many benefits over other collar designs. Advantages include: 

  • Simple Installation: Two-piece shaft collars can be applied anywhere along the shaft, without removing components between the end of the shaft and the desired location. They can be applied to a shaft when the end of the shaft is unreachable.
  • Highly Versatile: Two-piece shaft collars are manufactured using a wide range of materials and design specifications, to meet particular application needs, including chemical resistance, corrosion resistance, and temperature resistance.
  • Customizable: Two-piece shaft collars can be customized in a variety of sizes, designs, and materials.

Hinge Shaft Collars

Hinge shaft collars are a variant of the two-piece shaft collar, with a hinge on one side of the collar connecting the two pieces. Rather than fastening the collar on both sides, you can install it around the shaft by opening and closing it at the hinge. The hinge design offers the same easy disassembly and reassembly capabilities as two-piece shaft collars, but with no loose parts or fasteners. 

This allows them to be installed much more quickly, making them ideal for quick installations in time-sensitive applications and harsh conditions.

Superior Quality Collars and Couplings From Stafford Manufacturing

At Stafford Manufacturing, we are committed to providing our customers with reliable, long-lasting couplings and mechanical components. Contact us today or request a quote to learn more about our selection of two-piece shaft collars, hinge shaft collars, and other stock and custom solutions.