Bearing Housings
Machined housings with bearing seats bored to H7, coaxial to 0.01 mm across the pair.
Housings that hold bearings where they belong, with the two seats bored from the same setting so they are coaxial rather than individually accurate. Seat roundness is measured after boring, not assumed.
4–6 weeks
5 pieces
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bore tolerance | H7 | - |
| Coaxiality (pair) | 0.01 | mm |
| Bore roundness | 0.005 | mm |
| Bore range | Ø10–Ø300 | mm |
| Shoulder squareness | 0.01 | mm |
| Max housing | 800 × 600 × 400 | mm |
Available Materials
- Cast iron GG25 / GGG40
- Aluminium 6082-T6
- Steel 1045
- Stainless 316L
Typical Applications
- Pump bearing frames
- Pillow blocks
- Gearbox end covers
- Motor housings
- Roller support housings
Surface Finishes
- Painted
- Anodise
- Powder coat
- Machined faces
- Zinc plating
Industries Served
- Industrial Equipment
- Energy & Oil & Gas
- Marine
- Automotive & EV
- Mining & Construction
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
- Bore range at Ø10–Ø300 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.
- 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 5 pieces, 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 both seats in one setting?
- To make them coaxial. Boring them separately means the shaft alignment is the sum of two position errors, and the bearings end up fighting each other on a short shaft.
- Should the shoulder be square to the bore?
- Yes, to about 0.01 mm. The bearing outer ring seats against it, so a shoulder out of square tilts the ring and shows up as runout at the shaft.
Related part families
Precision Ball Bearings
ABEC 5–7 deep-groove and angular contact ball bearings, runout verified on every finished race.
Roller Bearings
Cylindrical, tapered and needle roller bearings for radial loads a ball bearing cannot carry.
Gear Housings
Machined gearbox housings with bored bearing seats, held to centre-distance ±0.02 mm.