Power Tool Spares & Accessories
Technical review: 2026-08-20
Replacement Drill Chucks & Keyless Chuck Assemblies
Source heavy-duty all-metal keyless chucks, carbide jaw ratcheting chucks, and quick-change SDS-Plus tool holders for combi drills and rotary hammer drills.
Where to Find Your Model or Part Number
To guarantee 100% compatibility, check these standard locations for model badges, OEM stampings, and serial numbers:
- Stamped around the outer metal sleeve (e.g. 1/2"-20 UNF 1.5-13mm, Röhm, Jacobs).
Frequently Replaced Components & Spares
13mm (1/2") Keyless Metal Ratcheting Chucks
1/2" x 20 UNF thread chucks with carbide jaw inserts
Quick-Change SDS-Plus Chucks
Direct slide-on chucks for Bosch GBH and DeWalt D25134 rotary hammers
Common Symptoms & Fault Diagnostics
| Observed Symptom | Likely Root Cause | Recommended Action |
|---|---|---|
| Drill bits slip and spin inside chuck jaws under torque, or chuck collar refuses to tighten | Stripped internal ratcheting teeth or worn internal scroll gear | Inspect and replace faulty component. |
Compatibility Verification Checklist
Before ordering replacement components, verify these technical specifications to avoid returns:
Confirm spindle thread: 1/2" x 20 UNF (standard on 18V tools) vs 3/8" x 24 UNF (compact 10.8V/12V tools).
How to Photograph Your Part for AI Identification
- 1Photograph the front face of the chuck showing the stamped thread specification.
Safety & Legal Compliance Notice
Ensure battery is detached or mains power isolated before removing retaining screws or fitting replacement chucks.