Australian Pulley Co. makes custom timing pulleys for non-standard shafts and bores, supporting accurate fitment for industrial machinery.
Custom timing pulleys are required when a catalogue pulley cannot match the existing shaft, bore, keyway or drive arrangement. We design and machine timing pulleys to supplied specifications so the belt geometry and shaft connection can be assessed together rather than accepting an approximate fit.
When Is a Shaft or Bore Requirement Non-Standard?
A requirement becomes non-standard when the needed bore diameter, tolerance or mounting detail is unavailable in the standard product range. This often arises with legacy machinery, imported equipment, modified shafts or replacement work involving a mixture of metric and imperial dimensions.
The bore is only one part of the connection. The specification may also need to account for the keyway, hub dimensions, locking arrangement, available shaft length and nearby components. The Mechanical Power Transmission Association’s standards explain why defined bore, keyway and setscrew dimensions matter for compatibility across power-transmission components.
Do not order from the shaft diameter alone. The timing pulley must also suit the belt profile, pitch, width and required tooth count. A correct bore on the wrong pulley geometry is still the wrong component.
Information We Need Before Machining
Clear technical information reduces assumptions and allows us to assess whether a custom timing pulley can be produced for the application. Provide a drawing where possible and identify dimensions rather than relying only on a photograph.
Include the following details with your enquiry:
- Belt profile and pitch: Identify the tooth form and distance between corresponding belt teeth.
- Tooth count: Confirm the number of teeth required to maintain the intended drive ratio.
- Belt width: State the belt width and any space restrictions around the pulley.
- Shaft and bore: Provide the shaft diameter, units and required bore tolerance or fit.
- Keyway: Include the width, depth and position shown on the shaft or engineering drawing.
- Hub dimensions: Confirm the hub diameter, hub length and overall pulley width.
- Mounting arrangement: Identify any existing bush, locking method or setscrew requirements.
- Material and conditions: Describe load, speed, temperature, moisture, dust or corrosion exposure.
- Reference information: Supply a dimensioned drawing, part number or sample details when replacing an obsolete component.
- Quantity: State whether the requirement is for one replacement, spares or ongoing production.
Custom Timing Pulley Manufacturing Options
Our pulley range includes timing pulleys, while our Australian manufacturing capability covers aluminium pulleys and engineering components made from steel, cast iron and nylon. We also machine pilot bores to suit specified shaft sizes.
For custom timing pulleys, the available work depends on the confirmed design and application. It may include:
- Machining a bore to a nominated dimension and tolerance
- Adding a specified keyway or compatible locking arrangement
- Producing a required tooth profile or non-standard configuration
- Selecting an appropriate available material
- Adjusting hub or overall dimensions where the design allows
Customers comparing broader made-to-order options can review our custom machined pulley article. It explains when an off-the-shelf component may not suit a legacy shaft, unusual keyway or application-specific material requirement.
Request a Custom Timing Pulley Quote
An accurate enquiry should define the belt and pulley geometry, shaft connection, operating conditions and quantity. Missing dimensions create guesswork, and guesswork is a poor basis for machining an industrial component.
Australian Pulley Co. manufactures pulley and engineering components in Australia and supplies customers nationwide. Contact us to review the requirement, identify any missing technical data, and discuss a quote for custom timing pulleys suited to the specified shaft and bore.