| Symbol | Value | Description |
|---|---|---|
| ≈m | 2.219 kg | Weight |
| nG | 2.300 1/min | Limiting speed |
| nϑr | 840 1/min | Reference speed |

INA
Axial-Cylindrical Roller Bearings
Axial Cylindrical Roller Bearing
RFQ
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
INA 81220 Axial Cylindrical Roller Bearing supports large one-direction axial loads with high rigidity. It is suitable for gearboxes, extruders, presses, and machine tool tables where high thrust capacity is needed in a short axial space.
The bearing is assembled from cylindrical roller and cage assemblies, shaft washers, and housing washers. Its separable structure simplifies mounting, while raceway hardness and finish are important if adjacent components are used as raceways.
Check axial load direction, washer configuration, raceway quality, minimum load, lubrication, and speed.
| Symbol | Value | Description |
|---|---|---|
| ≈m | 2.219 kg | Weight |
| nG | 2.300 1/min | Limiting speed |
| nϑr | 840 1/min | Reference speed |
| Symbol | Value | Description |
|---|---|---|
| d | 100 mm | Bore diameter |
| D | 150 mm | Outside diameter |
| B | 38 mm | Width |
| r1, 2 min | 1,1 mm | Minimum chamfer dimension |
| Symbol | Value | Description |
|---|---|---|
| da min | 142 mm | Min. shoulder diameter for mounting, inner ring |
| Da max | 107 mm | Max. shoulder diameter for mounting, housing |
| ra max | 1,1 mm | Max. fillet radius |
| Symbol | Value | Description |
|---|---|---|
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
| Code | Description |
|---|---|
| K81220-TV | Cage |
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:
INA81220INA 81220RFQ

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