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 Service Armature
Model Number: 16-70-0173
The Milwaukee 16-70-0173 is a genuine OEM Service Armature, the central rotating component of the motor in a corded Milwaukee tool. The armature is built from a steel shaft, copper windings, and a series of commutator bars, and as the carbon brushes ride against the commutator they transfer electrical current into the spinning windings, converting electrical power into the rotation that drives the tool. It is the heart of the motor, so its condition directly determines whether the tool runs with full power. The armature is a component that fails under hard use: if the tool is repeatedly overloaded, the copper windings can overheat until the insulation melts and the armature shorts or fails, and worn commutator bars or a damaged shaft degrade performance. When the armature fails, the tool loses power, runs rough, sparks excessively at the brushes, or stops running entirely. Replacing it with the correct genuine Milwaukee OEM service armature restores the motor's rotation and full power output.
Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, and because an armature is specific to the exact motor it drives, always verify your tool's serial number against the official Milwaukee service parts diagram before ordering to confirm this is the correct armature for your tool. Do not order by appearance, since armatures that look similar differ in winding, commutator, shaft, and pinion details, and the diagram is what confirms the correct part. It is strongly recommended to replace both carbon brushes at the same time as the armature, since worn brushes will quickly wear a new armature's commutator, and to inspect the field, bearings, and commutator when servicing. Handle the armature carefully during installation, especially any cooling fan, and reuse the bearings only if they are undamaged. Because this is a motor repair, follow the correct service procedure and re-grease the gear mesh with the Milwaukee-specified grease where the diagram calls for it. The field, carbon brushes, brush holders, bearings, and gearcase components that work with the armature are separate parts, so refer to your tool's parts diagram for the correct companion part numbers.
Features
- Genuine Milwaukee OEM service part, not an aftermarket substitute
- Service Armature, the central rotating component of the tool's motor
- Steel shaft, copper windings, and commutator bars for current transfer
- Converts electrical power into the rotation that drives the tool
- The heart of the motor, determining the tool's power output
- Restores motor rotation and full power after armature failure
- Corrects a tool that lost power, runs rough, sparks, or overheated
- Replace both carbon brushes at the same time as the armature
- Inspect the field, bearings, and commutator when servicing
- Manufactured to Milwaukee specification for correct fit and performance
- Field, brushes, brush holders, and gearcase parts are separate, sold separately
- Verify catalog number and serial number before ordering
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 16-70-0173
- Official Description: Service Armature
- Component Type: Motor armature
- Construction: Steel shaft, copper windings, commutator bars
- Primary Fitment: Corded Milwaukee tool - verify by model and serial number
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Verify the figure and bulletin number on Milwaukee's online parts lookup
- Recommended Companion Service: Replace both carbon brushes with the armature
- Quantity: Sold individually, (1) required per tool
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Milwaukee 16-70-0173 Service Armature
The field, carbon brushes, brush holders, bearings, and gearcase components that work with the armature 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.
