Angular Contact Ball Bearings
Single and paired angular contact bearings ground for preload, ABEC 5–7.
Angular contact bearings for combined radial and thrust load, usually in pairs. We grind the faces so a given clamp force produces the preload, rather than leaving it to a shim.
4–6 weeks
10 pieces
ISO 9001:2015 · AS9100D
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Contact angle | 15 / 25 / 40 | ° |
| Precision class | ABEC 5–7 / P5–P4 | - |
| Bore range | Ø10–Ø150 | mm |
| Configuration | Single · DB · DF · DT | - |
| Preload | Grind-set faces | on request |
| Runout | ≤0.003 | mm |
Available Materials
- Bearing steel 52100
- Stainless 440C
- Ceramic balls (hybrid)
- Brass or phenolic cages
Typical Applications
- Machine tool spindles
- Ball screws
- Pumps
- Compressors
- Gearbox input shafts
Surface Finishes
- Ground races
- Black oxide
- Passivate
- Pre-lubricated
- Sealed / shielded
Industries Served
- Industrial Equipment
- Semiconductor
- Medical
- Energy & Oil & Gas
- 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.
- Part size
- Bore range at Ø10–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, Bearing Steel 52100 (100Cr6), rates 4/10 on our machinability scale at 60–66 HRC hardened · 183–217 HB annealed. 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 10 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
- 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 pair them face to face instead of back to back?
- Face-to-face tolerates more misalignment and suits a slower shaft; back-to-back is stiffer and handles overhung load, which is why spindles use it.
Related part families
Precision Ball Bearings
ABEC 5–7 deep-groove and angular contact ball bearings, runout verified on every finished race.
Deep Groove Ball Bearings
The general-purpose bearing: radial and light thrust in one part, ABEC 5–7.
Spindle Assemblies
Belt and motor spindles built with matched bearings, runout measured at the nose.