Description
Overview:
The Counter Shaft for Makita HMJ1812 Electric Breaker (MPN 310619-0) is a genuine Makita OEM component designed to restore smooth, reliable drive within the breaker's internal mechanism. Precision-machined from durable steel, it is built to handle the repeated impacts and torsional loads found in heavy-duty demolition work. Fitted in the HMJ1812, the counter shaft helps transfer power and maintain correct alignment of moving parts so the striking system operates efficiently. It is suitable for tradespeople, plant hire maintenance teams, and DIY users who need to replace a worn or damaged shaft and return their electric breaker to full performance. As an authentic Makita part, it offers the correct fit and function without modification.
Key Features:
- Genuine Makita OEM part for HMJ1812 compatibility and reliability
- MPN 310619-0 for accurate identification and ordering
- Precision-machined steel construction for strength and service life
- Helps maintain smooth power transfer to the striking mechanism
- Consistent performance under high-impact, high-load conditions
- Direct replacement to restore function of worn or damaged shafts
- Stable fit with correct tolerances to limit vibration and wear
- Straightforward installation using standard workshop tools
Typical Applications:
Used during routine servicing or repairs of the Makita HMJ1812 Electric Breaker when drive-related issues arise, such as excessive play, noise, or reduced impact output. Suitable for site repairs, workshop overhauls, and preventative maintenance on breakers used in construction, demolition, utilities, groundworks, and hire fleets where dependable uptime is important.
Also known as:
Countershaft, drive shaft (breaker), intermediate shaft, gear shaft, transmission shaft, hammer mechanism shaft, replacement breaker shaft. These terms are commonly used to describe the same internal rotating component that couples and aligns parts of the breaker's drive train to ensure smooth and efficient operation.
Fits Models:
HMJ1812
Alternate Part Numbers:
3106190
Product Specifications
| L&S Part No. | 310619-0 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 310619-0 |
| Unit of Sale | 1 |
| Machine Type | Electric Breakers |
| Fits Brands | Makita |
| Key Features | - Genuine Makita OEM part for HMJ1812 compatibility - Precision-machined steel for strength and durability - Maintains smooth power transfer to striking mechanism - Direct replacement for worn or damaged shafts - Stable fit limits vibration and wear |
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