CNC Machined Plates & Bases
Machined base plates and mounting plates, faced flat and drilled to a pattern.
Base plates where flatness and hole pattern are the whole job. Faces are machined on both sides where the plate gets bolted down and then built on, so it does not rock.
How we make it: Precision CNC machining service →
2–4 weeks
1 piece
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Flatness | 0.05 | mm / 300 mm |
| Hole position | ±0.05 | mm |
| Thickness tolerance | ±0.05 | mm |
| Max size | 2000 × 1000 × 200 | mm |
| Faces machined | Both sides | standard |
| Surface roughness | Ra 1.6 | µm |
Available Materials
- Aluminium 6082-T6
- Steel 1045
- Cast iron GGG40
- Stainless 304
- Tooling plate (cast aluminium)
Typical Applications
- Machine base plates
- Fixture bases
- Mounting plates
- Sub-plates for automation
- Inspection tables
Surface Finishes
- Machined faces
- Anodise
- Painted
- Black oxide
- Ground (on request)
Industries Served
- Industrial Equipment
- Automation
- Semiconductor
- Aerospace
- Medical
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
- Flatness at 0.05 mm / 300 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.
- Part size
- Max size at 2000 × 1000 × 200 mm decides which machine the part lands on and how many setups it needs. Size is the driver buyers most often leave out of a first enquiry, and it is the one that changes the quote fastest.
- Surface finish
- Surface roughness at Ra 1.6 µm. Every step below the ordinary as-machined Ra 1.6 µm adds a finishing pass; a callout on a face nobody touches is the most common over-specification we quote.
- Material
- The first material listed, Aluminium 6082-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
- Surface roughness tester (Mitutoyo) against the Ra callout
- 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 machine both faces of a base plate?
- So it sits flat on the floor and stays flat on top. A plate faced on one side only will rock on the rough side, and every measurement taken off it inherits the wobble.
Related part families
Machine Modules
Slide, index and lift modules built, aligned and function-tested before delivery.
Inspection Stands & Bench Fixtures
Stands that hold a part for CMM or manual inspection, at a repeatable orientation.
Frame & Machine Kits
Cut, machined and kitted structural frames with hardware, ready to bolt together on site.