Soft Jaws & Chuck Jaws
Soft jaws machined to your part profile, for holding finished or odd-shaped work without marking.
Soft jaws bored in place on the chuck, so the grip matches the machine it runs on. That is the whole trick - jaws machined on a bench never seat as well as jaws cut in the chuck.
How we make it: Custom CNC parts service →
1–2 weeks
1 piece
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Concentricity | ≤0.02 | mm TIR |
| Jaw types | Soft · pie · full wrap | - |
| Chuck sizes | 100–400 | mm |
| Grip pressure | Set to avoid distortion | - |
| Bore in place | Yes | standard |
| Repeatability | 0.02 | mm |
Available Materials
- Aluminium 6061-T6
- Mild steel
- Nylon / POM (non-marking)
- Bronze (grip)
Typical Applications
- Second-operation turning
- Thin-wall workholding
- Chromed or polished parts
- Odd-shaped blanks
- Repeat production runs
Surface Finishes
- As-machined
- Bored in place
- Non-marking inserts
- Laser marked part ID
Industries Served
- Industrial Equipment
- Automotive & EV
- Medical
- Aerospace
- Instrumentation
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Concentricity at ≤0.02 mm TIR is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Material
- The first material listed, Aluminium 6061-T6, rates 9/10 on our machinability scale at 95 HB. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Bore gauges and an optical comparator for hole position and edge form
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Why bore soft jaws on the machine?
- Because the chuck itself has runout. Jaws cut on the bench are concentric to the bench, not to the spindle, and the finished parts inherit the difference.
Related part families
Workholding Fixtures
Machining fixtures that locate on the casting or forging datum, repeatable to 0.02 mm.
Collets & Collet Fixtures
Machined collets and collet holders for accurate, repeatable small-part workholding.
Vise Jaws
Hardened and soft vise jaws machined to your part, stepped or profiled as needed.