Description
Overview:
The Armature Assembly for the Milwaukee M18FLAG230XPDB Angle Grinder is a genuine Milwaukee spare part designed to restore smooth, reliable motor drive in your large cordless grinder. As the rotating core of the motor, the armature (rotor) transfers power to the gearbox and disc, directly affecting torque, speed stability, and vibration levels. Built around a precision-ground steel shaft with a stacked steel lamination core and copper windings, it is factory balanced for consistent performance under load. Its robust build helps it withstand high temperatures and dust from cutting and grinding tasks. Engineered specifically for the Milwaukee M18FLAG230XPDB 230 mm (9 in) angle grinder, this genuine part (OEM reference 4931465846) offers an accurate fit and dependable operation for professional and DIY maintenance.
Key Features:
- Genuine Milwaukee part for assured compatibility and performance (OEM 4931465846)
- Precision-balanced rotor helps reduce vibration and improves cut and grind quality
- Durable steel shaft and laminated core with copper windings for long service life
- Designed to cope with heavy-duty use typical of 230 mm (9 in) angle grinders
- Accurate fitment to the M18FLAG230XPDB to minimise downtime during repairs
- Stable speed delivery supports consistent results across a range of materials
- Quality insulation and finish to resist dust ingress and thermal stress
- Helps restore lost power and efficiency in worn or damaged grinders
Typical Applications:
Used to replace a worn or failed rotor in a Milwaukee 230 mm (9 in) cordless angle grinder. Suitable for general construction, metal fabrication, site work, and workshop use, including cutting steel, trimming rebar, chasing masonry, grinding welds, bevel preparation, rust removal, and surface preparation where reliable motor output and smooth running are required.
Also known as:
Rotor assembly, motor rotor, grinder armature, rotor shaft, motor core, Milwaukee 230 mm (9 in) grinder rotor, replacement rotor for large angle grinder, OEM rotor 4931465846.
Fits Models:
M18FLAG230XPDB
Product Specifications
| L&S Part No. | MIL4931465846 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Milwaukee |
| OEM No. | 4931465846 |
| Unit of Sale | 1 |
| Applications | M18FLAG230XPDB |
| Machine Type | Angle Grinder |
| Fits Brands | Milwaukee |
| Fits Models | M18FLAG230XPDB |

