Couplings

Shaft Couplings & Drive Couplings

AIMS Industrial stocks a comprehensive range of shaft couplings and coupling components from Finer Power Transmissions and KCP. From flexible jaw couplings for motor-to-gearbox connections through to rigid split-clamp couplings and gear couplings for high-torque shaft joining, we carry the coupling types most commonly specified in Australian industry. Manufactured to AS/ISO standards across the range.

For background on coupling selection, alignment tolerance, torque rating and when to choose flexible vs rigid vs fluid couplings, see our flexible coupling guide and shaft coupling guide.

Browse couplings by type:

• Jaw couplings — most widely used flexible coupling, accommodates misalignment and damps shock
• HRC pin-and-bush couplings — higher torque capacity than jaw, pumps and fans
• Cone ring & flexible tyre couplings — high misalignment tolerance, electrically insulating
• Gear couplings — heavy-duty high-torque shaft joining
• Chain couplings — economical high-torque flexible coupling
• Rigid couplings — split clamp and sleeve for precise shaft alignment

Jaw couplings

Flexible jaw couplings are the most widely used coupling type in general industry, accommodating angular, radial and axial misalignment while damping vibration and shock between driving and driven machines. Available in metric and imperial bore configurations. Spider (element) materials include NBR nitrile rubber for standard duty, polyurethane for higher torque and reduced backlash, Hytrel for demanding combined shock and torsional applications, and snap-wrap elements for quick replacement without dismounting hubs. Curved-jaw coupling halves are available in stepped and full pilot-bore configurations.

HRC couplings

HRC pin-and-bush flexible couplings offer higher torque capacity than jaw types and are widely used on pumps, fans and general machinery. Available in flange taper lock (Type F) and hub taper lock (Type H) configurations — Type F bolts to a mounting flange, Type H locks directly to the shaft via taper lock bushes. Elements are supplied in nitrile rubber and polyurethane for different service requirements.

Cone ring, flexible tyre & gear couplings

Cone ring couplings (pin-and-conical-rubber-ring) provide good shock and torsional damping with electrical isolation between shafts — useful in environments where galvanic currents or grounding paths must be controlled. Flexible tyre couplings (F-Flex) handle high misalignment with all-rubber drive elements. Gear couplings are the heavy-duty option for high-torque shaft connections in mining, marine and heavy industrial equipment — particularly where the misalignment is small but the torque transmission is demanding.

FRAS & mining-specific couplings

For mining and hazardous-area applications, fire-resistant anti-static (FRAS) coupling elements are available — meeting AS/NZS requirements for underground coal and surface coal operations. Pair with FRAS belts (where applicable) and ensure the full drivetrain meets the site's hazardous-area classification.

Companion ranges at AIMS

Couplings sit alongside the broader power transmission range. For coupling-related components: coupling elements and parts for replacement spiders, rings and bushes; taper lock bushes for shaft mounting; shaft collars for axial location; and key steel for keyway machining. For shaft-mounted pulleys downstream of couplings, see V-belt pulleys and timing pulleys. For chain drives as a coupling alternative, see belt vs chain drives.

Need help speccing a coupling — by torque rating, bore size, misalignment requirement or service environment? Call (02) 9773 0122 or contact our team. Coupling failure is one of the most expensive avoidable drivetrain issues — worth getting right.