Description
Hold what a 3-jaw chuck can't. The Proxxon 4-jaw chuck for the DB 250 is designed for clamping asymmetrical, rectangular, and irregular workpieces that a self-centering 3-jaw chuck cannot grip securely. Each jaw adjusts independently, giving you precise control over centering and the ability to hold square stock, off-center workpieces, and non-round profiles. The reversible jaws extend the clamping range from 0–35mm inside to 14–67mm outside, and the chuck mounts directly to the DB 250 headstock spindle via M16×1 thread — no adapter required.
Key Specifications
- Compatible machine: Proxxon DB 250 Wood Lathe
- Jaw type: 4-jaw independent (each jaw adjusts separately)
- Jaw configuration: Reversible — use in standard or reversed position
- Inside clamping range: 0–1-3/8" (0–35mm)
- Outside clamping range: 35/64"–2-5/8" (14–67mm)
- Spindle thread: M16 × 1 — direct mount to DB 250 headstock
- Weight: 59g
- Part No.: 27024
When Do You Need a 4-Jaw Chuck?
A 4-jaw independent chuck is the right choice when:
- Your workpiece is square, rectangular, or asymmetrical — shapes a 3-jaw self-centering chuck can't grip
- You need to turn off-center — each jaw adjusts independently for deliberate eccentric positioning
- You need maximum grip security on irregular stock where a self-centering chuck might slip
Frequently Asked Questions
Is this a self-centering or independent chuck?
Independent — each of the four jaws adjusts separately. This gives you more flexibility than a self-centering chuck but requires manual centering of the workpiece using a dial indicator or by eye.
Does this fit the DB 250 directly?
Yes — the chuck threads directly onto the DB 250 headstock spindle (M16 × 1 thread) with no adapter required.
Can I use this for bowl turning?
Yes — the outside clamping range up to 67mm and the ability to hold irregular blanks makes this suitable for small bowl and faceplate-style turning on the DB 250.
Works Well With
- Proxxon 5-Piece Wood Turning Tool Set (No. 27023) — turning chisels for the DB 250
- Proxxon Drill Chuck for DB 250 Tailstock — 5mm Capacity (No. 27028) — tailstock drill chuck for boring operations
Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.
California Residents Prop 65 Information
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.