IBC
Angular Contact Ball Bearing
RFQ
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
IBC CB7038.E Angular Contact Ball Bearing supports combined radial and one-direction axial load through a defined contact angle. It is a high-speed, high-precision choice for pumps, compressors, machine tools, and spindle-related positions where axial rigidity and rotational accuracy matter.
The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.
Select by contact angle, arrangement, preload, precision class, axial load direction, and operating speed.
| Symbol | Value | Description |
|---|---|---|
| Cr | 235000 N | Basic dynamic load rating, radial |
| C0r | 206500 N | Basic static load rating, radial |
| Cu | 7648 N | Fatigue limit load |
| nG | 5800 1/min | Limiting speed (grease) |
| nO | 8700 1/min | Limiting speed (oil-air) |
| ≈m | 8.602 kg | Weight |
| α | 25 ° | Contact angle |
| Symbol | Value | Description |
|---|---|---|
| d | 190 mm | Bore diameter |
| D | 290 mm | Outside diameter |
| B | 46 mm | Width |
| dpi | 232.3 mm | Injection diameter (oil-air lubrication) |
| a | 79 mm | Effective load centre |
| d1 | 225.4 mm | Shoulder diameter, inner ring |
| D1 | 254.5 mm | Shoulder diameter, outer ring |
| r1,2 min | 2.1 mm | Minimum chamfer dimension |
| r3,4 min | 1.1 mm | Minimum chamfer dimension, side face |
| Symbol | Value | Description |
|---|---|---|
| da min | 207 mm | Min. shoulder diameter for mounting, inner ring |
| Da max | 279 mm | Max. shoulder diameter for mounting, housing |
| Db max | 283.5 mm | Max. shoulder diameter, sealed side |
| ra max | 2.1 mm | Max. fillet radius |
| rb max | 1.1 mm | Max. fillet radius, side face |
| Symbol | Value | Description |
|---|---|---|
| Fv X | 680 N | Preload force — class X (extra light) |
| Sa X | 350 N/μm | Axial stiffness — class X (extra light) |
| Sr X | 700 N/μm | Radial stiffness — class X (extra light) |
| FAK X | 1930 N | Unloading force — class X (extra light) |
| Fv L | 1360 N | Preload force — class L (light) |
| Sa L | 480 N/μm | Axial stiffness — class L (light) |
| Sr L | 970 N/μm | Radial stiffness — class L (light) |
| FAK L | 3860 N | Unloading force — class L (light) |
| Fv M | 3070 N | Preload force — class M (medium) |
| Sa M | 690 N/μm | Axial stiffness — class M (medium) |
| Sr M | 1380 N/μm | Radial stiffness — class M (medium) |
| FAK M | 8670 N | Unloading force — class M (medium) |
| Fv H | 6130 N | Preload force — class H (high) |
| Sa H | 990 N/μm | Axial stiffness — class H (high) |
| Sr H | 1980 N/μm | Radial stiffness — class H (high) |
| FAK H | 17350 N | Unloading force — class H (high) |
| Code | Description |
|---|---|
| Si3N4 ceramic (hybrid) | Rolling element material |
| MBA 190 | Recommended precision locknut |
| Single row high precision angular contact ball bearing | Product type |
The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:
CB7038ECB7038 ECB7038IBCCB7038EIBC CB 7038 EIBCCB 7038 EIBCCB7038 EIBC CB7038EIBC CB 7038EIBCCB7038RFQ
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