NJ248-E-M1
Cylindrical roller bearing
Cylindrical roller bearing NJ..-E-M1, with cage, single row, semi-locating bearing, 2 ribs on outer ring, 1 rib on inner ring, type NJ
Replaces
NJ248E.M1, NJ248M
Description
Metric
Imperial
Main Dimensions & Performance Data
| d | 240 mm | Bore diameter |
| D | 440 mm | Outside diameter |
| B | 72 mm | Width |
| Cr | 1,140,000 N | Basic dynamic load rating, radial |
| C0r | 1,610,000 N | Basic static load rating, radial |
| Cur | 171,000 N | Fatigue load limit, radial |
| nG | 2,320 1/min | Limiting speed |
| nϑr | 1,220 1/min | Reference speed |
| ≈m | 53.2 kg | Weight |
Mounting dimensions
| da min | 257 mm | Minimum diameter shaft shoulder |
| da max | 290 mm | Maximum diameter of shaft shoulder |
| Da max | 423 mm | Maximum diameter of housing shoulder |
| dc min | 315 mm | Minimum shaft shoulder |
| ra max | 3 mm | Maximum recess radius |
Dimensions
| rmin | 4 mm | Minimum chamfer dimension |
| r1 min | 4 mm | Minimum chamfer dimension |
| s | 6 mm | Axial displacement |
| E | 393 mm | Raceway diameter outer ring |
| F | 293 mm | Raceway diameter inner ring |
| D1 min | 376.6 mm | Minimum rib diameter outer ring |
| d1 | 312 mm | Maximum rib diameter inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 150 °C | Operating temperature max. |
Additional information
| HJ248-E | L-washer |
Downloads:
Your current product variant
| Design | E | Increased Capacity Design |
| Cage | M1 | Two Piece Brass Cage Roller Guided |
| Radial internal clearance | CN | Group N (CN) |
| Tolerance class | PN | Normal (PN) |
| Number of rolling element rows | 1 | Single-row design |
Characteristics
