Description
Overview:
The Internal Spur Gear is a genuine Makita part (OEM No. 227392-4) for maintaining and repairing Makita cordless impact wrenches, including DTW1001Z and DWT100RTJ. Made from steel with an internal ring-gear profile, it transfers drive smoothly within the hammer mechanism to keep torque delivery consistent. It is precision‐machined for an accurate fit, helping to reduce noise and wear compared with a worn gear. Use it to replace a damaged or fatigued gear and restore reliable operation, especially on tools used in heavy fastening and service work. As a Genuine Makita component, it matches the original specifications for fit and performance, supporting long service life when installed following Makita's service guidance.
Key Features:
- Genuine Makita OEM component (227392-4) for direct replacement and correct fit
- Steel construction for strength under high torque and impact loads
- Precision-cut spur teeth for smooth meshing and reduced wear
- Internal ring-gear design matched to the hammer mechanism in DTW1001-series tools
- Helps restore consistent torque output and smooth operation when the original gear is worn
- Suitable for demanding, regular use typical of trade and site environments
- Straightforward replacement when following Makita service documentation and using standard tools
- Supports tool longevity by maintaining correct drivetrain alignment and performance
Typical Applications:
Used during service and repair of Makita impact wrenches to replace a worn internal gear causing slipping, rough running, or loss of torque. Suitable for tools used in construction fixing, plant maintenance, steelwork assembly, agricultural repairs, and automotive wheel and chassis work where reliable high-torque performance is required.
Also known as:
Internal ring gear, spur ring gear, drive gear, hammer mechanism gear, replacement gear, service gear for impact wrench, Makita OEM gear.
Fits Models:
DTW1001Z, DWT1002RTJ, DWT1002Z, DWT100RTJ
Alternate Part Numbers:
2273924
Product Specifications
| L&S Part No. | 227392-4 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 227392-4 |
| Unit of Sale | 1 |
| Applications | DTW1001Z, DWT1002RTJ, DWT1002Z, DWT100RTJ |
| Machine Type | Impact Wrench |
| Fits Brands | Makita |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
