| Symbol | Value | Description |
|---|---|---|
| ≈m | 13,854 kg | Weight |
| nG | 1.110 1/min | Limiting speed |
| nϑr | 410 1/min | Reference speed |
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INA
INA 81244-M Axial cylindrical r. Cylindrical Roller Bearing 220 × 300 × 63 mm
Axial cylindrical r.
Cylindrical Roller Bearing
RFQ
Estimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)
In stockEstimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
- Category
- Cylindrical Roller Bearing
- Bore
- 220 mm mm
- Outer Ø
- 300 mm mm
- Width
- 63 mm mm
Overview
INA 81244-M Cylindrical Roller Bearing is designed for high radial load capacity through line contact between rollers and raceways. It is suitable for rigid, heavy-duty applications such as motors, gearboxes, rolling mills, and machine tools, with N, NU, NJ, and NUP designs offering different axial locating functions.
Cylindrical rollers and a cage are arranged between inner and outer ring raceways. Depending on flange configuration, the bearing can be separable and may support axial load in one or both directions.
Key features
- High radial load capacity
- Rigid performance for high-speed operation
- Separable design for easier mounting
- Axial locating capability by design variant
Typical applications
- Industrial electric motors
- Gearboxes and reducers
- Machine tool spindle support positions
- Rolling mills, paper machines, and heavy machinery
Selection guidance
Choose the N, NU, NJ, or NUP design by load direction, axial locating requirement, cage material, internal clearance, and lubrication condition.
| Symbol | Value | Description |
|---|---|---|
| d | 220 mm | Bore diameter |
| D | 300 mm | Outside diameter |
| B | 63 mm | Width |
| r1, 2 min | 2 mm | Minimum chamfer dimension |
| Symbol | Value | Description |
|---|---|---|
| da min | 296 mm | Min. shoulder diameter for mounting, inner ring |
| Da max | 230 mm | Max. shoulder diameter for mounting, housing |
| ra max | 2 mm | Max. fillet radius |
| Symbol | Value | Description |
|---|---|---|
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
| Code | Description |
|---|---|
| K81244-M | Cage |
| Standard bearing steel | Material |
| Tolerance class P0/PN2 / ABEC 1 | Tolerance class |
Also searched as
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:
81244M81244 M81244INA81244MINA 81244 MINA81244 MINA 81244MINA81244
