CATEngine Parts

1B8741 Woodruff Key — Cat 320C 320D

This Woodruff key is a semi-circular metal key used to connect a rotating machine element, such as a pulley or gear, to a shaft. It fits into a corresponding keyway in both the shaft and the hub, preventing relative rotation and ensuring positive drive. A worn or missing key can cause slippage and loss of power transmission, while a properly functioning key ensures secure component engagement. Operators might notice a loss of drive or unusual noises if the key fails.

Woodruff Key – Part No 1B8741 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeWoodruff Key
MaterialSteel
ApplicationShaft and hub connection
Service LifeReplace as needed due to wear or damage
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A failing Woodruff key may initially cause slight slippage or intermittent loss of power transmission. If left unaddressed, the key can shear or wear down, leading to complete loss of drive for the connected component. This can result in the inability to operate essential functions of the machine.

Installation Tip

Always clean the keyway on both the shaft and the component thoroughly before installation to ensure a proper fit. Avoid hammering the key into place, as this can damage the key or the keyways.

Service Note

Inspect the shaft and the mating component's hub for any signs of wear or damage that could compromise the Woodruff key's function.