Description
Overview:
This Gearcase Cover is a genuine DeWalt replacement part for specific hammer drills, including the D21570K Type 1 and DW522KS Type 1. It forms the front housing of the drill's transmission, protecting the internal gears and helping to maintain alignment under load. Manufactured from robust die-cast metal (aluminium alloy), it resists impact and wear in demanding site and workshop conditions. As an OEM component (OEM No. 645400-04SV), it offers an accurate fit and restores the original performance of compatible tools without modification. Suitable for selected DeWalt models within the DeWalt/Black & Decker family, it is designed to keep dust and debris away from moving parts and support smooth, reliable operation over time. Genuine Part.
Key Features:
- Genuine DeWalt OEM component for reliable fit and function (OEM No. 645400-04SV)
- Durable die-cast aluminium alloy housing resists impact, abrasion, and corrosion
- Shields gears and bearings from dust and debris to reduce wear
- Helps maintain gear alignment for efficient power transfer and smooth running
- Direct replacement for the original cover; straightforward installation with standard hand tools
- Supports long service life and reduces downtime by restoring factory integrity
- Compatible with selected DeWalt hammer drills, including D21570K Type 1 and DW522KS Type 1
Typical Applications:
Used when the original front housing is cracked, worn, or contaminated, and during scheduled overhauls of heavy-use hammer drills. Suitable for service centres, site maintenance, and DIY repairs to restore protection of the transmission on compatible DeWalt machines working on masonry, timber, and metals with appropriate accessories.
Also known as:
Gear housing, gearbox cover, front cover, nose housing, transmission case, drill front end housing, hammer drill gearcase, gearcase body, front gearbox shell.
Fits Models:
D21570K, DW522KS, DWD522KS, DWD524KS, DWD530KS
Alternate Part Numbers:
645400-04SV, 64540004SV
Product Specifications
| L&S Part No. | 645400-04SV |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Black & Decker |
| OEM No. | 645400-04SV |
| Unit of Sale | 1 |
| Machine Type | Hammer Drill |
| Fits Brands | Black & Decker, DeWalt |
| Key Features | - Genuine DeWalt OEM part ensures reliable fit (OEM No. 645400-04SV) - Die-cast aluminium alloy resists impact and abrasion - Protects gears from dust and debris, reducing wear - Maintains gear alignment for efficient power transfer - Compatible with D21570K and DW522KS hammer drills |
| Fits Models | D21570K Type 1 | DWD522KS Type 1 | DWD524KS Type 1 | DWD530KS Type 1 |
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