Angular Contact Ball Bearings
E, EA, BO, L, M Series Small Angular Contact Ball Bearings
Small-size angular contact ball bearings for combined radial and axial loads.
Dimensions & Load Ratings
| Bearing No. | d (Bore) (mm) | D (Outer Dia.) (mm) | B (Width) (mm) | Dynamic Load (N) | Static Load (N) | Max. RPM | Weight (kg) |
|---|---|---|---|---|---|---|---|
| E4 | 4 | 16 | 5 | 1485 | 259 | 36000 | 0.005 |
| E5 | 5 | 16 | 5 | 1485 | 259 | 36000 | 0.004 |
| E6 | 6 | 21 | 7 | 2241 | 400 | 32400 | 0.011 |
| E7 | 7 | 22 | 7 | 2241 | 400 | 32400 | 0.013 |
| E8 | 8 | 24 | 7 | 3105 | 585 | 30600 | 0.014 |
| E9 | 9 | 28 | 8 | 4095 | 418 | 27000 | 0.022 |
| E10 | 10 | 28 | 8 | 4095 | 418 | 27000 | 0.021 |
| E11 | 11 | 32 | 7 | 3960 | 760 | 23400 | 0.029 |
| E12 | 12 | 32 | 7 | 3960 | 760 | 23400 | 0.028 |
| E13 | 13 | 30 | 7 | 3960 | 760 | 23400 | 0.021 |
| E15 | 15 | 35 | 8 | 5220 | 1035 | 19800 | 0.034 |
| BO15 | 15 | 40 | 10 | 6660 | 1350 | 18000 | 0.055 |
| L17 | 17 | 40 | 10 | 6660 | 1350 | 18000 | 0.051 |
| BO17 | 17 | 44 | 11 | 6615 | 1350 | 17100 | 0.08 |
| E19 | 19 | 40 | 9 | 4545 | 927 | 18000 | 0.049 |
| E20 | 20 | 47 | 12 | 9900 | 2142 | 15300 | 0.089 |
| L20 | 20 | 47 | 14 | 9900 | 2142 | 15300 | 0.101 |
Dimensions and load ratings per manufacturer technical catalogue. Speed ratings shown are for oil lubrication — for grease lubrication, use 75% of the indicated value.
Request Quote for E-EA-BO-L-M SeriesTypical Applications
- Machine tool spindles and precision equipment
- Pumps, compressors and gearboxes
- Worm gear drives and combined-load shafts
- Automotive and general engineering assemblies
About Angular Contact Ball Bearings
Angular contact ball bearings are similar to deep groove ball bearings, but the line of contact between the balls and the raceways is at an angle in the radial plane, so they sustain combined radial and axial loads.
Single row bearings can also be used as a combination of two or more units — back-to-back (BTB), face-to-face (FTF) or tandem (TD) — for higher rigidity or load capacity.
- Capable of carrying both axial and radial loads
- Suitable for low, medium and high speed applications
Available Variants
- Open basic design single and double row angular contact ball bearings
- Sealed types
- With snap ring groove
- With snap ring groove and snap ring
- Standard precision grade (ISO Grade 0 – ABEC1) for single and double row bearings
- Standard as well as higher grades (P5 and P4) for single row bearings used in combination
- Pressed steel, nylon fibre and brass cage
Suffix Codes
Add these suffixes to the bearing number to specify seals, clearance, cage and precision options.
| Suffix | Meaning |
|---|---|
| A | Contact angle of 30 degrees. |
| B | Contact angle of 40 degrees. |
| C | Contact angle of 15 degrees. |
| F | Fiber cage. |
| G1–G15 | Internal grease type codes. Contact us for details. |
| M | Machined brass cage. |
| N | Snap ring groove in the outer ring. |
| NR | Snap ring groove in the outer ring, with snap ring. |
| P | Nylon cage (for open types). |
| P4 | Dimensional and running accuracy conforming to ISO class 4. |
| P5 | Dimensional and running accuracy conforming to ISO class 5. |
| P6 | Dimensional and running accuracy conforming to ISO class 6. |
| Q1–Q8 | Internal reference codes. Contact us for details. |
| RS | Rubber seal with steel sheet reinforcement on one side of the bearing. |
| 2RS | Rubber seal with steel sheet reinforcement on both sides of the bearing. |
| Z | Metallic shield on one side of the bearing. |
| ZZ | Metallic shields on both sides of the bearing. |
Frequently Asked Questions
What sizes are available in the E-EA-BO-L-M series?
E-EA-BO-L-M series bearings are available from 4mm – 20mm bore, as listed in the dimension table on this page. Each size has its own bearing number for ordering.
What load ratings apply to E-EA-BO-L-M bearings?
Dynamic and static load ratings vary by size — see the table for the exact rating per bearing number. Larger sizes carry proportionally higher load ratings.
What is the E-EA-BO-L-M series typically used for?
Common applications include machine tool spindles and precision equipment and pumps, compressors and gearboxes, and similar general industrial equipment.
What do the contact angle suffixes A, B and C mean?
C means a 15° contact angle, A means 30° and B means 40°. A larger angle gives higher axial load capacity but lower speed capability.
Can I order E-EA-BO-L-M series bearings with special options?
Yes. Many options are available — see the variants and suffix codes on this page — subject to design and manufacturing constraints. Share your requirement in a quote request.
Need pricing on E-EA-BO-L-M series bearings?
Share your size and quantity — our technical team will confirm availability and pricing within one business day.