Overview
The 57145K39 triple hinged split collar is a precision-engineered fastening component designed for secure shaft positioning and axial holding on standard round shafts, soft shafts, and thin-walled tubing. With a 2-15/16″ inner diameter and 4-1/2″ outer diameter, this collar delivers reliable clamping performance in industrial machinery, equipment maintenance, and system integration applications.
Key Features
- Triple-link hinge design: Combines the flexibility of the two-piece collar with the simplicity of the one-piece, allowing assembly and disassembly anywhere on the shaft.
- Captive clamping screw: No loose fasteners to lose or misplace during installation and maintenance.
- Smooth bore: Does not damage shafts, protecting precision surfaces during repeated adjustments.
- Fast installation: Easy to assemble, reposition, and take apart—eliminating fumbling, lost screws and wasted time.
- Precision-machined construction: Provides consistent holding power on hard and soft materials.
Technical Specifications
- Inner Diameter (ID): 2-15/16″
- Outer Diameter (OD): 4-1/2″
- Hinge Type: Triple-link
- Fastener: Captive clamping screw
- Bore Style: Smooth (shaft-protective)
- Material: Steel construction
- Suitable for: Round shafts, soft shafts, thin-wall tubing, split hubs
Typical Applications
Triple hinged split collars are widely used in:
- Machinery setup and alignment operations
- Equipment maintenance and emergency repairs
- Shaft clamping in confined or hard-to-reach spaces
- Positioning control and axial load management
- Industrial drive systems and transmission equipment
- Field installations where tool-free assembly is required
Compatibility & Replacements
Compatible With
- Standard round shafts (metric and imperial sizing)
- Soft shafts and non-hardened materials
- Thin-wall tubing and hollow shafts
- Split hubs and custom shaft geometries
- Industrial machinery alignment systems
- Drive and coupling applications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering to confirm this unit directly replaces your existing collar model.
Works With
- Two-piece shaft collar systems
- Flexible coupling assemblies
- Shaft positioning kits
- Industrial clamping fixtures
