Couplings & Shaft Collars — Flexible & Rigid Shaft Connections

Shaft couplings connect two shafts to transmit power while accommodating misalignment, vibration, and thermal expansion. AIMS Industrial stocks shaft couplings and shaft collars from Finer Power Transmissions and KCP — jaw (spider) couplings, HRC couplings, flexible tyre couplings, cone ring couplings, rigid couplings, and shaft collars for the full range of industrial drive and positioning applications.

Couplings & Shaft Collars We Stock

Jaw (Spider) Couplings — Metric & Imperial

Finer Power Transmissions jaw couplings use a polyurethane, NBR rubber, or Hytrel spider element between two metal hubs — providing flexible torque transmission with vibration damping and misalignment accommodation. Available in metric and imperial bore sizes with multiple spider element materials for varying stiffness and temperature requirements.

HRC Couplings — Nitrile & Polyurethane Elements

Finer Power Transmissions HRC couplings use a flexible pin-and-bush element in nitrile rubber or polyurethane — widely used for motor-to-pump and motor-to-gearbox connections in conveyor, fan, and general industrial drives. HRC flange taper lock versions allow direct fitment to taper lock bushes for easy installation and removal without disturbing shaft alignment.

Flexible Tyre & Cone Ring Couplings

Finer Power Transmissions flexible tyre couplings use a synthetic rubber tyre element for high misalignment tolerance and vibration isolation — suited to applications with significant shaft misalignment or vibration, including crushers, pumps, and heavy-duty drives. Cone ring couplings use a segmented pin-and-bush design for high torque with simple element replacement without removing hubs.

Rigid Couplings — Clamp Type

Finer Power Transmissions two-piece split rigid couplings (clamp type, black oxide) for applications where shaft alignment is maintained by the machine structure — used as shaft connectors in aligned drive trains where no misalignment accommodation is needed. Clamp type design allows installation without disturbing adjacent components.

Shaft Collars — Split & Grub Screw Types

Shaft collars from KCP and Finer Power Transmissions in clamp-type (split) and grub screw configurations — for shaft retention, component positioning, and mechanical stop applications. Available in metric and imperial bore sizes, steel black oxide and zinc plated finish.

Coupling & Shaft Collar Selection Guide

Misalignment Capacity

• Jaw couplings — tolerate angular (±1°) and parallel (0.5mm) misalignment, adequate for motor-to-pump and motor-to-gearbox connections
• HRC couplings — moderate misalignment tolerance with good vibration damping, standard choice for general industrial drives
• Flexible tyre couplings — highest misalignment tolerance, best choice for applications with significant alignment difficulty or vibration
• Rigid couplings — zero misalignment tolerance, only for precision-aligned shafts

Spider Element Selection for Jaw Couplings

• NBR (nitrile rubber) — standard duty, oil resistant, suitable for most industrial applications
• Polyurethane — stiffer, higher torque capacity, reduced vibration damping, good for higher-load drives
• Hytrel — stiffest element, high temperature rated, suitable for servo-type and high-cycle applications

Stiffer spider elements transmit higher torque but damp less vibration — match element hardness to the drive characteristics and vibration sensitivity of the connected equipment.

Shaft Collar Type Selection

Clamp-type (split) shaft collars grip the shaft without scoring — preferred for precision positioning and where collars may need repositioning. Grub screw (set screw) collars provide a positive position lock and are suited to permanent stop applications where shaft marking is acceptable.

Shop the full range above, or contact our team for expert advice on the right product for your application or reach out if you need a quote. Fast dispatch from our Australian warehouse.

As a proudly Australian business since 1988, we stock locally and work with trusted distributors to ensure fast, reliable supply.

See our full power transmission range including locking assemblies, industrial timing belts, and deep groove bearings.