IBC
Angular Contact Ball Bearing
RFQ
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
IBC HM71924.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 | 43700 N | Basic dynamic load rating, radial |
| C0r | 45500 N | Basic static load rating, radial |
| Cu | 1685 N | Fatigue limit load |
| nG | 9400 1/min | Limiting speed (grease) |
| nO | 14200 1/min | Limiting speed (oil-air) |
| ≈m | 1.2 kg | Weight |
| α | 25 ° | Contact angle |
| Symbol | Value | Description |
|---|---|---|
| d | 120 mm | Bore diameter |
| D | 165 mm | Outside diameter |
| B | 22 mm | Width |
| a | 44 mm | Effective load centre |
| d1 | 135.6 mm | Shoulder diameter, inner ring |
| D1 | 149.5 mm | Shoulder diameter, outer ring |
| r1,2 min | 1.1 mm | Minimum chamfer dimension |
| r3,4 min | 0.6 mm | Minimum chamfer dimension, side face |
| Symbol | Value | Description |
|---|---|---|
| da min | 128 mm | Min. shoulder diameter for mounting, inner ring |
| Da max | 158 mm | Max. shoulder diameter for mounting, housing |
| Db max | 159.8 mm | Max. shoulder diameter, sealed side |
| ra max | 1.1 mm | Max. fillet radius |
| rb max | 0.6 mm | Max. fillet radius, side face |
| Symbol | Value | Description |
|---|---|---|
| Fv L | 310 N | Preload force — class L (light) |
| Sa L | 180 N/μm | Axial stiffness — class L (light) |
| Sr L | 370 N/μm | Radial stiffness — class L (light) |
| FAK L | 880 N | Unloading force — class L (light) |
| Fv M | 930 N | Preload force — class M (medium) |
| Sa M | 270 N/μm | Axial stiffness — class M (medium) |
| Sr M | 550 N/μm | Radial stiffness — class M (medium) |
| FAK M | 2640 N | Unloading force — class M (medium) |
| Fv H | 1860 N | Preload force — class H (high) |
| Sa H | 360 N/μm | Axial stiffness — class H (high) |
| Sr H | 720 N/μm | Radial stiffness — class H (high) |
| FAK H | 5280 N | Unloading force — class H (high) |
| Code | Description |
|---|---|
| 100Cr6 | Rolling element material |
| 100Cr6 | Ring material |
| P4A | Tolerance class |
| MBA 120 | Recommended precision locknut |
| High-precision angular contact ball bearing, speed-optimized HM series | 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:
HM71924EHM71924 EHM71924IBCHM71924EIBC HM 71924 EIBCHM 71924 EIBCHM71924 EIBC HM71924EIBC HM 71924EIBCHM71924RFQ
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