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The MILWAUKEE 42-40-0061 is a pinion shaft bushing designed as a replacement component for Milwaukee power tools. A pinion shaft bushing supports and stabilizes the pinion shaft within a tool's gear housing, reducing friction and wear between moving metal surfaces during operation. This part is installed by tool repair technicians and experienced service professionals performing drivetrain maintenance or rebuilds on compatible Milwaukee power tools.
This bushing fits within the gear assembly of select Milwaukee power tools where the pinion shaft requires a precision-fit bearing surface. It is used in professional repair and rebuild scenarios when the original bushing shows signs of wear, scoring, or failure. Installers sourcing this part by MPN can confirm application fit against the original Milwaukee parts diagram for the specific tool model.
Designed as an OEM-style replacement bushing for select Milwaukee power tools. Confirm compatibility using the Milwaukee parts diagram for the specific tool model before installation.
Installation should be performed by a qualified power tool repair technician. Disconnect and de-energize the tool completely before disassembling the gear housing. Use appropriate press or installation tools to seat the bushing properly without deforming the bore. Refer to the Milwaukee service manual for the specific tool to ensure correct orientation and seating depth.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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