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 Output Shaft Assembly
Model Number: 38-50-0160
The Milwaukee 38-50-0160 is a genuine OEM Output Shaft Assembly for the 2731-20, 2731-21, 2731-22, 2731-059, and 2631-20 M18 FUEL 7-1/4 in. circular saws. The output shaft assembly is the driven shaft at the saw's power output: it carries the final torque from the gear reduction stage out to the blade arbor, where the blade flanges and blade mount. The motor's rotor pinion drives the gear on this output shaft, and the shaft transmits that reduced, torque-multiplied rotation to the blade. Supplied as a complete assembly, it provides the shaft with its integral gear, bearing journals, and output interface factory-matched and correctly assembled, so the drivetrain's output stage goes back together to specification. The output shaft must maintain precise dimensional tolerances at its bearing journals and arbor interface to ensure accurate, concentric blade rotation and correct blade retention. A worn, bent, or damaged output shaft that introduces run-out, vibration, or inaccurate rotation, or a stripped or chipped output gear, requires replacement to restore correct cutting performance. Replacing it with the correct genuine Milwaukee OEM output shaft assembly returns the saw to true, smooth, full-power operation.
Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee service parts diagram before placing your order, since running production changes can alter part compatibility within the same catalog number. This output shaft assembly is specified for the 2731 and 2631 M18 FUEL 7-1/4 in. circular saws, so confirm your tool's catalog and serial number against the parts diagram before ordering. The blade flanges, blade bolt, the gearcase and upper guard assembly, the bearings, and the rotor that drives the output shaft are separate parts that vary by tool, so refer to your tool's parts diagram for the correct companion part numbers. Because replacing the output shaft involves opening the gearcase, follow the correct service procedure and re-grease with the Milwaukee-specified grease on reassembly, applying a heavy coating to the output shaft gear teeth and the rotor pinion and coating the bearing journals as the bulletin directs.
Features
- Genuine Milwaukee OEM service part, not an aftermarket substitute
- Output Shaft Assembly for the 2731 and 2631 M18 FUEL 7-1/4 in. circular saws
- The driven shaft that carries final torque to the blade arbor
- Driven by the motor's rotor pinion through its integral gear
- Transmits reduced, torque-multiplied rotation to the blade
- Supplied as a complete assembly with shaft, gear, and bearing journals
- Factory-matched for correct bearing fit and arbor interface geometry
- Must run true for accurate, concentric blade rotation and retention
- Restores true, smooth, full-power cutting when worn or damaged
- Corrects run-out, vibration, or a stripped output gear
- Blade flanges, bolt, gearcase, bearings, and rotor are separate, sold separately
- Verify catalog number and serial number before ordering
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 38-50-0160
- Official Description: Output Shaft Assembly
- Component Type: Circular saw output (arbor) shaft with integral gear
- Function: Carries final torque from the gear reduction to the blade arbor
- Primary Fitment: 2731-20, 2731-21, 2731-22, 2731-059, and 2631-20 M18 FUEL 7-1/4 in. circular saws
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Figure 83 on the circular saw service parts list (bulletin 54-40-2635)
- Quantity: Sold as an assembly, (1) required per tool
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Milwaukee 38-50-0160 Output Shaft Assembly
The blade flanges, blade bolt, gearcase and upper guard assembly, bearings, rotor, and gearcase grease that work with the output shaft are NOT included, vary by tool, and are sold separately - refer to your tool's parts diagram for the correct part numbers and quantities. Always verify by serial number using Milwaukee's online parts lookup before ordering.
