Pillow Block Units
Housed bearing units with machined seats, aligned and ready to bolt down.
Bearing units supplied as a housing plus a bearing, seated and greased so they are fitted rather than assembled. Base flatness is checked so the unit does not rock when bolted.
4–6 weeks
5 pieces
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bore range | Ø20–Ø150 | mm |
| Base flatness | 0.05 | mm |
| Seal type | Labyrinth or lip | - |
| Misalignment | To 2 | ° |
| Lubrication | Pre-greased | standard |
| Housing material | Cast iron or aluminium | - |
Available Materials
- Cast iron GG25 / GGG40
- Aluminium 6082-T6
- Steel 1045
- Bearing steel 52100
Typical Applications
- Conveyor shafts
- Fan and blower shafts
- Line shafts
- Agricultural machinery
- Roller assemblies
Surface Finishes
- Painted housing
- Anodise (aluminium)
- Machined base
- Lubricated and sealed
Industries Served
- Industrial Equipment
- Agricultural Machinery
- Mining & Construction
- Food Processing
- Water Treatment
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
- Base flatness at 0.05 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
- Bore range at Ø20–Ø150 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
- Cast iron or aluminium housings?
- Cast iron for load and heat, aluminium where weight matters or the environment is corrosive. Aluminium housings also grow more with temperature, which matters on a tight fit.
Related part families
Self-Aligning Bearings
Self-aligning ball and spherical roller bearings that tolerate shaft misalignment.
Bearing Housings
Machined housings with bearing seats bored to H7, coaxial to 0.01 mm across the pair.
Conveyor Modules
Conveyor sections built complete with rollers, frames and drives, aligned and run.