Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee Bearing Sleeve
Model Number: 42-40-0580
The Milwaukee 42-40-0580 is a genuine OEM Bearing Sleeve replacement component for compatible Milwaukee power tools — a precision-machined cylindrical housing component that positions and retains a bearing assembly within the tool's gear case, motor housing, or spindle assembly at the correct location for accurate shaft alignment and proper radial load support. Bearing sleeves provide the bore geometry that the outer race of a rolling element bearing seats into, maintaining the bearing's position relative to the tool's housing structure and ensuring the shaft the bearing supports runs concentrically without excessive runout that would affect hole quality, cause vibration, and accelerate bearing wear. When a bearing sleeve cracks, develops excessive bore wear that allows the bearing outer race to spin in the housing, or becomes damaged from impact or overload, the bearing it contains loses accurate positioning and the tool develops the noise, vibration, and reduced performance that bearing misalignment and inadequate support cause.
Using a genuine Milwaukee OEM bearing sleeve ensures the correct bore diameter tolerance, length, and material specification for proper bearing outer race retention in the specific tool application — an undersized bore allows the bearing to spin in the housing, creating accelerated wear on both the bearing and the sleeve, while an oversized bore provides inadequate support. Always verify your specific Milwaukee tool's model number and serial number at milwaukeetool.com or reference the illustrated service parts diagram to confirm the correct bearing sleeve part number before ordering, as sleeve specifications are unique to each bearing location in each tool model and production revision.
Features
- Genuine Milwaukee OEM bearing sleeve — correct bore tolerance for proper bearing retention
- Maintains bearing outer race position for accurate shaft alignment and support
- Replace when sleeve shows bore wear, spinning bearing damage, or physical damage
- Bore dimensions are application-specific — verify model and serial number before ordering
- Consult milwaukeetool.com parts lookup or service diagram for correct part number
Specifications
- Type: Bearing Sleeve (Bearing Retention Housing)
- Compatible Tools: Milwaukee Power Tools (verify model and serial number)
Includes
- (1) Milwaukee 42-40-0580 Bearing Sleeve
