With Set Screw

The 1-1/4" Split Shaft Collar with Set Screw is a heavy-duty shaft-positioning and retaining component designed for commercial and industrial overhead door systems using a 1-1/4" shaft.

Its split design allows the collar to clamp around the shaft, while the set screw provides additional holding force to help keep compatible shaft-mounted components properly positioned.

Features

• Product Type: Split Shaft Collar
• Inside Diameter: 1-1/4"
• Includes Set Screw
• Split-clamp design
• Designed for compatible 1-1/4" shafts
• Helps retain and position shaft-mounted components
• Suitable for repair, replacement, and new installation applications
• Commonly used in commercial and industrial overhead door systems

How It Works

A shaft collar is used to help control the position of components mounted on a rotating or stationary shaft.

The split collar wraps around the shaft and clamps into place. The included set screw provides an additional mechanical locking point to help resist unwanted movement.

This type of collar may be used as a stop, spacer, positioning device, or retaining component depending on the specific overhead door system.

Compatibility

This collar is designed for 1-1/4" diameter shafts and may be used with compatible commercial overhead door hardware.

Potential applications include compatible:

• Solid torsion shafts
• Shaft couplers
• Bearing assemblies
• Cable drum systems
• Sprockets
• Chain hoists
• Jackshaft operator assemblies
• Spreader arms
• Other 1-1/4" shaft-mounted components

Compatibility is determined by the shaft diameter, available mounting space, collar dimensions, and specific door-system configuration.

Common Applications

Suitable for compatible:

• Commercial sectional overhead doors
• Industrial door systems
• Torsion shaft assemblies
• Shaft positioning
• Component retention
• Coupled-shaft systems
• Operator shaft assemblies
• Garage door repair and maintenance
• New commercial door installations

Verify Before Ordering

Before ordering, confirm:

• Required shaft diameter: 1-1/4"
• Shaft type and condition
• Required collar style
• Available mounting clearance
• Set screw requirements
• Position of adjacent bearings, drums, couplers, or other hardware

The collar should match the shaft diameter precisely for proper clamping and retention.

Specifications

Product Type: Split Shaft Collar
Inside Diameter: 1-1/4"
Design: Split / Clamp Style
Set Screw: Included
Application: Commercial and Industrial Overhead Door Shaft Systems

Installation

During installation:

• Secure the door before servicing shaft components
• Confirm the shaft diameter is 1-1/4"
• Position the collar at the required location
• Clamp the collar evenly around the shaft
• Tighten the set screw securely
• Confirm adjacent components remain properly aligned
• Verify the collar does not interfere with bearings, drums, springs, or other moving hardware

Do not overtighten hardware to the point of damaging the shaft or collar.

Package Contents

• 1 × 1-1/4" Split Shaft Collar
• 1 × Set Screw

Installation & Safety

Commercial overhead door shafts may be part of a counterbalance system operating under significant spring tension.

Secure the door and safely release spring tension when required before servicing shaft-mounted hardware.

Installation should be performed by a qualified overhead door technician or an experienced individual familiar with commercial door shaft assemblies.