Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NJ238 | |
| Bore diameter | d | 190 mm |
| Outside diameter | D | 340 mm |
| Width | B | 55 mm |
| Basic dynamic load rating | C | 680 kN |
| Basic static load rating | C0 | 930 kN |
| Fatigue load limit | Pu | 113 kN |
| Reference speed | nref | 1720 r/min |
| Limiting speed | nG | 3050 r/min |
| Mass | ≈m | 22.42 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Cage | M1 — Two Piece Brass Cage Roller Guided | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 150 °C |
Product characteristics5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design | E | Increased Capacity Design |
| Cage | M1 | Two Piece Brass Cage Roller Guided |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Number of rows | 1 | Single-row design |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 190 mm7.48 in |
| Outside diameter | D | 340 mm13.386 in |
| Width | B | 55 mm2.165 in |
| Basic dynamic load rating, radial | Cr | 680,000 N152,877.698 lbf |
| Basic static load rating, radial | C0r | 930,000 N209,082.734 lbf |
| Fatigue load limit, radial | Cur | 113,000 N25,404.676 lbf |
| Limiting speed | nG | 3,050 1/min |
| Reference speed | nϑr | 1,720 1/min |
| Mass | ≈m | 22.42 kg49.428 lbs |
Mounting dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 207 mm8.15 in |
| Maximum diameter of shaft shoulder | da max | 227 mm8.937 in |
| Maximum diameter of housing shoulder | Da max | 323 mm12.717 in |
| Minimum shaft shoulder | dc min | 247 mm9.724 in |
| Maximum recess radius | ra max | 3 mm0.118 in |
Dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 4 mm0.157 in |
| Minimum chamfer dimension | r1 min | 4 mm0.157 in |
| Axial displacement | s | 4.7 mm0.185 in |
| Raceway diameter outer ring | E | 306 mm12.047 in |
| Raceway diameter inner ring | F | 230 mm9.055 in |
| Minimum rib diameter outer ring | D1 min | 295 mm11.614 in |
| Maximum rib diameter inner ring | d1 | 244 mm9.606 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 150 °C302 °F |
Capabilities & suitability6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Largebearing | Yes |
Manufacturer Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1298020 | |
| Brand | FAG | |
| Base Type | NJ238 | |
| SAP material number | 0933297410000 | |
| Base product | 2305090111 | |
| Bearing X designation | NJ238-E-M1 | |
| Mounting Manager ID | NJ238-E-M1 | |
| Grease application ID | NJ238-E-M1 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | 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 | |
| Short Description | Cylindrical roller bearing |
Additional information1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| L-washer | HJ238-E |
Technical Data22 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 190 mm | |
| Outside Diamater (D) | 340 mm | |
| Total Width (B) | 55 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 680,000 N | |
| Basic Static Load Rating, Radial (C0R) | 930,000 N | |
| Raceway Diameter Inner Ring (F) | 230 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 207 mm | |
| Operating Temperature Max. (Tmax) | 150 °C | |
| Limiting Speed (Limiting Spe) | 3,050 1/min | |
| Minimum Shaft Shoulder (Dc Min) | 247 mm | |
| Reference Speed (Nϑr) | 1,720 1/min | |
| Maximum Recess Radius (Ra Max) | 3 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 323 mm | |
| Maximum Rib Diameter Inner Ring (D1) | 244 mm | |
| Minimum Chamfer Dimension (R1 Min) | 4 mm | |
| Axial Displacement (S) | 4.7 mm | |
| Minimum Rib Diameter Outer Ring (D1 Min) | 295 mm | |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 227 mm | |
| Minimum Chamfer Dimension (Rmin) | 4 mm | |
| Raceway Diameter Outer Ring (E) | 306 mm | |
| Fatigue Load Limit, Radial (Cur) | 113,000 N |
