Assembled Sub-Assemblies
Machined, plated, inspected and kitted as one part number, with the tolerance stack-up owned in one place.
We machine the parts, plate them, press the bearings and ship a sub-assembly that fits your fixture. The point is the stack-up: when six parts come from three vendors, nobody owns the total.
4–6 weeks
25 pieces
ISO 9001:2015 · IATF 16949
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Assembly tolerance | ±0.02 | mm |
| Positional tolerance | ±0.01 | mm |
| Press fits | H7 / p6 | - |
| Functional test | Per drawing | - |
| Traceability | Per part number | - |
| Packaging | Kitted & bar coded | - |
Available Materials
- Aluminium 6061-T6
- Stainless 304 / 316L
- Steel 4140
- Bronze C932
- Engineering plastics (POM, PEEK)
Typical Applications
- Actuator assemblies
- Sensor housings with connectors
- Pump cartridges
- Bearing housings with shafts
- Complete machine modules
Surface Finishes
- Plated
- Anodised
- Painted
- Lubricated
- Cleanroom packed
- Preserved for sea freight
Industries Served
- Automotive & EV
- Medical
- Industrial Equipment
- Semiconductor
- Robotics
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
- Assembly tolerance at ±0.02 mm 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 25 pieces, where setup and tooling are amortised across the batch and per-part cost settles around cycle time and material. Below that quantity the same part costs more per piece, not less.
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
- First article inspection to AS9102, because this family carries an aerospace or automotive certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Why buy a sub-assembly instead of the parts?
- Because someone has to own the fit. If two of your vendors each hold their own ±0.05 mm and the interface needs ±0.02 mm, the assembly fails on the bench and neither supplier is wrong.
- Can you hold tighter than the drawing on a stack-up?
- Usually by machining the mating features in one operation while the parts are still bolted to a common fixture. That removes the setup-to-setup error from the stack entirely.
Related part families
Precision Chassis & Enclosures
EMI-shielded enclosures and instrument chassis, formed and welded to ±0.1 mm with gasket channels.
Welded Frames & Structures
TIG and MIG welded steel frames, squared on a fixture and stress-relieved before machining.
Inspection Fixtures & Gauges
CMM fixtures, check gauges and go/no-go tooling built from your CAD and certified dimensionally.