Machined from billet or cast?

Billet below roughly 20 units a year, cast above it. Billet removes the tooling cost and the porosity risk; casting wins once the volume spreads the die over enough parts.

CNC Machined Housings

Machined housings with bored seats and sealing faces, held coaxial to 0.01 mm.

Housings from billet where the casting volume does not justify a tool. Bores are cut in one setup so the seats stay coaxial, and sealing faces are milled flat to hold a gasket.

How we make it: Precision CNC machining service →

H7 -0.01 mm0.02 mm1000 × 800 × 600 mm

Lead Time

3–5 weeks

Min Order

1 piece

Certifications

ISO 9001:2015

Request a Quote All CNC Machined Parts

Technical Specifications

Parameter	Value	Unit
Bore tolerance	H7	-
Coaxiality	0.01	mm
Sealing face flatness	0.02	mm
Max envelope	1000 × 800 × 600	mm
Wall down to	1.5	mm
Surface roughness	Ra 1.6	µm

Available Materials

Typical Applications

Gearbox housings
Pump and motor bodies
Sensor enclosures
Bearing carriers
Valve bodies

Surface Finishes

Anodise
Painted
Painted inside + out
Passivate
Machined sealing faces

Industries Served

Industrial Equipment
Energy & Oil & Gas
Automotive & EV
Marine
Automation

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: Bore tolerance at H7 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: Wall down to at 1.5 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

Machined from billet or cast?: Billet below roughly 20 units a year, cast above it. Billet removes the tooling cost and the porosity risk; casting wins once the volume spreads the die over enough parts.

Related part families

Bearing Housings

Machined housings with bearing seats bored to H7, coaxial to 0.01 mm across the pair.

Gear Housings

Machined gearbox housings with bored bearing seats, held to centre-distance ±0.02 mm.

Cast Aluminium Brackets

Net-shape brackets cast in aluminium, consolidating a weldment into one part.

Machined materials Inspection & quality Certifications DFM guidelines Upload a drawing