Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NNU4148 | |
| Bore diameter | d | 240 mm |
| Outside diameter | D | 400 mm |
| Width | B | 160 mm |
| Basic dynamic load rating | C | 1980 kN |
| Basic static load rating | C0 | 3600 kN |
| Fatigue load limit | Pu | 425 kN |
| Mass | ≈m | 76.34 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Cage | M — Brass Cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 150 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Cage | M | Brass Cage |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Number of rows | 2 | Double-row design |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 240 mm9.449 in |
| Outside diameter | D | 400 mm15.748 in |
| Width | B | 160 mm6.299 in |
| Basic dynamic load rating, radial | Cr | 1,980,000 N445,143.885 lbf |
| Basic static load rating, radial | C0r | 3,600,000 N809,352.518 lbf |
| Fatigue load limit, radial | Cur | 425,000 N95,548.561 lbf |
| Limiting speed for grease lubrication | nG Grease | 2,180 1/min |
| Limiting speed for oil lubrication | nG Oil | 2,550 1/min |
| Mass | ≈m | 76.34 kg168.301 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter shaft shoulder | da | 257 mm10.118 in |
| Diameter of housing shoulder | Da | 383 mm15.079 in |
| Maximum recess radius | ra1 max | 3 mm0.118 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | r1 min | 4 mm0.157 in |
| Raceway diameter inner ring | F | 282 mm11.102 in |
| Axial displacement | s | 5.1 mm0.201 in |
| Shoulder diameter outer ring | D1 | 352.1 mm13.862 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 150 °C302 °F |
Capabilities & suitability1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Largebearing | Yes |
Manufacturer Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 374568 | |
| Brand | FAG | |
| Base Type | NNU4148 | |
| SAP material number | 0192321440000 | |
| Base product | 2305090141 | |
| Bearing X designation | NNU4148-M | |
| Mounting Manager ID | NNU4148-M | |
| Grease application ID | NNU4148-M |
Product Identity1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Short Description | Cylindrical roller bearing |
Technical Data17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 240 mm | |
| Outside Diamater (D) | 400 mm | |
| Total Width (B) | 160 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 1,980,000 N | |
| Basic Static Load Rating, Radial (C0R) | 3,600,000 N | |
| Raceway Diameter Inner Ring (F) | 282 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed For Grease Lubrication (Ng Grea) | 2,180 1/min | |
| Minimum Diameter Shaft Shoulder (Da) | 257 mm | |
| Limiting Speed (Ng Oil) | 2,550 1/min | |
| Operating Temperature Max. (Tmax) | 150 °C | |
| Maximum Diameter Of Housing Shoulder (Da) | 383 mm | |
| Minimum Chamfer Dimension (R1 Min) | 4 mm | |
| Shoulder Diameter Outer Ring (D1) | 352.1 mm | |
| Axial Displacement (S) | 5.1 mm | |
| Maximum Recess Radius (Ra1 Max) | 3 mm | |
| Fatigue Load Limit, Radial (Cur) | 425,000 N |
