Description
Overview:
The Makita Ring Spring 21 HR2450t/HR281 (MPN 233924-7) is a genuine Makita replacement part for SDS-Plus rotary hammer drills. Made from tough, heat-treated spring steel, this circular ring spring maintains the correct tension in the tool holder/chuck assembly so drill bits lock and release reliably under load. It helps keep the internal mechanism aligned and responsive, supporting consistent hammering and drilling performance. Designed to OEM standards for a precise fit, it is ideal for routine servicing or restoring performance after wear. It is suitable for several Makita hammers including the HR2450T and HR2811FT, making it a practical, cost-effective way to extend tool life and reduce downtime on site or in the workshop.
Key Features:
- Genuine Makita part (233924-7) for assured fit and function
- Durable spring steel construction resists fatigue and deformation
- Maintains correct tension in the tool holder for secure bit retention
- Supports smooth bit insertion and release during frequent changeovers
- Helps restore hammer performance and reduce vibration-related issues
- Manufactured to OEM tolerances for reliable, repeatable assembly
- Compact, straightforward component for quick installation with basic tools
- Suitable for professional trade use and regular DIY maintenance
- Compatible with a wide range of Makita SDS-Plus rotary hammers
- Cost-effective preventative maintenance part to extend tool service life
Typical Applications:
Used within the chuck/tool holder assembly of Makita SDS-Plus rotary hammer drills to provide the preload and support needed for secure bit location. Ideal when refurbishing the front end of the hammer, fixing poor bit retention, improving release action, or after routine strip-downs where springs show wear, loss of tension, or damage.
Also known as:
Ring spring, retaining spring, chuck ring spring, bit holder spring, SDS-Plus holder spring, tool holder spring, rotary hammer ring spring, Makita chuck spring, compression ring spring (tool holder), internal mechanism spring.
Fits Models:
BHR243, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, DHR264ZJ, DHR281ZJ, HR2450T, HR2470T, HR2611FT, HR2811FT
Product Specifications
| L&S Part No. | 233924-7 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 233924-7 |
| Unit of Sale | 1 |
| Machine Type | Rotary Hammer |
| Fits Brands | Makita |
| Key Features | - Genuine Makita part for SDS-Plus rotary hammers - Made from heat-treated spring steel - Maintains tension for secure bit retention - Compatible with HR2450T and HR2811FT models - Supports consistent hammering and drilling performance |
| Fits Models | BHR243 | HR2450T | HR2470T | HR2611FT | HR2811FT | DHR243RFE | DHR243RFEV | DHR243RMJ | DHR243RMJV | DHR243Z | DHR264ZJ | DHR281ZJ |
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