TOP-TOOL 325D11, 325mm / 12-Inch 3-Jaw Self-Centering Lathe Chuck, Form D Short-Taper Camlock, Clamping Range 11.5–320 mm (0.45–12.60 in), Two-Piece Jaws (Master + Reversible Top Jaws), Pre-Mounted Set, T-Key, Direct Mount (No Backing Plate)
TOP-TOOL 325D11, 325mm / 12-Inch 3-Jaw Self-Centering Lathe Chuck, Form D Short-Taper Camlock, Clamping Range 11.5–320 mm (0.45–12.60 in), Two-Piece Jaws (Master + Reversible Top Jaws), Pre-Mounted Set, T-Key, Direct Mount (No Backing Plate)
Professional 325D11 — 325mm / 12.80-Inch 3-Jaw Self-Centering Chuck, Form D Short-Taper Camlock
The 325D11 is built for short-taper lathe spindles that use Form D (camlock) retention. It mounts directly on the spindle nose with cam pins and studs; no separate adapter flange is required when your spindle matches this interface. Short taper reference angle 7°7′30″. Overall clamping envelope 11.5–320 mm (0.45–12.60 in) (same jaw geometry class as our plain-back models of the same diameter class).
Premium Materials & Hardening
| Component | Material | Hardness (HRC) |
|---|---|---|
| Body | HT300 Cast Iron | — |
| Jaws | AISI 1045 Carbon Steel | 52–58 |
| Scroll Plate | AISI 5140 Alloy Steel | 43–48 |
| Bevel Gears | AISI 5140 Alloy Steel | 45–50 |
Clamping ranges
Outside clamping with solid outside jaws (standard setup): 11.5–145 mm on the outside diameter.
Inside support / expanding with the same outside jaws: 95–320 mm internal gripping.
Outside clamping with solid inside (reverse) jaws: 110–320 mm for large-diameter OD work.
Summary: overall envelope 11.5–320 mm (0.45–12.60 in) depending on jaw configuration.
Key Features
- Form D Camlock: Studs and camlock ring geometry for quick, repeatable spindle mounting.
- Direct Mount: The 325D11 interface—no backing plate when the spindle nose matches.
- Heavy-Duty HT300 Cast Iron body; hardened scroll and gears (AISI 5140).
- Hardened Jaws (HRC 52–58) (AISI 1045).
- QC: Repeatability ≤0.05 mm (0.002") per factory test-bar procedure.
- Two-Piece Jaw System: Master jaws with reversible top jaws pre-mounted for OD/ID setups. No second full jaw kit is included (packaging differs from solid-jaw models).
- T-Key Included.
Jaw type
This listing uses two-piece jaws. For solid outside/inside jaw sets, see our other listings.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 325D11 |
| D (chuck body diameter) | 325 mm (12.80 in) |
| D1 (short taper large end) | 196.869 mm |
| D2 (stud / bolt spacing) | 235.0 mm |
| D3 (chuck through hole) | 105 mm |
| H1 (body thickness, factory table) | 103.5 mm |
| h / h1 (mounting recess depths) | 20 mm / 16 mm |
| H (overall with jaws, reference) | 155 mm |
| Studs / bolts (z–d) | 6× M22 × 1.5 |
| Net weight | 53.0 kg |
Compatibility
You must verify that your lathe spindle nose short taper large-end size matches D1, and that the spindle is Form D (camlock retention). Also confirm the stud pattern (z–d) matches your machine. Machine swing must clear chuck body diameter D and fully opened jaws.
Maintenance
Clean and lubricate the scroll and gears with molybdenum disulfide (MoS2) grease.
Safety
Never run with the chuck key engaged. Respect rated speeds for diameter and workpiece balance.
Made with care
Heirloom quality
Premium materials
Classic styling
Styled With
Materials
Aluminum Oxide，Non-Woven
Included Accessories
Green(Fine):40pcs,Red(Medium):40pcs,Brown(Coarse):40pcs.
1/4" Holder