Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications14 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | QJ248 | |
| Bore diameter | d | 240 mm |
| Outside diameter | D | 440 mm |
| Width | B | 72 mm |
| Basic dynamic load rating | C | 690 kN |
| Basic static load rating | C0 | 1270 kN |
| Fatigue load limit | Pu | 39.5 kN |
| Reference speed | nref | 1250 r/min |
| Limiting speed | nG | 2550 r/min |
| Mass | ≈m | 52.5 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Cage | MPA — Solid brass cage, outer ring guided | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design, bearing outer ring | N2 | Two retaining grooves in the outer ring on one side |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Cage | MPA | Solid brass cage, outer ring guided |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
| Axial internal clearance | C3 | Group 3 (C3), bigger than CN |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 240 mm9.449 in |
| Outside diameter | D | 440 mm17.323 in |
| Width | B | 72 mm2.835 in |
| Basic dynamic load rating, radial | Cr | 690,000 N155,125.899 lbf |
| Basic static load rating, radial | C0r | 1,270,000 N285,521.583 lbf |
| Fatigue load limit, radial | Cur | 39,500 N8,880.396 lbf |
| Limiting speed | nG | 2,550 1/min |
| Reference speed | nϑr | 1,250 1/min |
| Mass | ≈m | 52.5 kg115.743 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 257 mm10.118 in |
| Maximum diameter of housing shoulder | Da max | 423 mm16.654 in |
| Maximum fillet radius | ra max | 3 mm0.118 in |
Dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 4 mm0.157 in |
| Shoulder diameter outer ring | D1 | 369 mm14.528 in |
| Shoulder diameter inner ring | d1 | 313.65 mm12.348 in |
| Distance between the apexes of the pressure cones | a | 238.1 mm9.374 in |
| Hight retaining slot | an | 15 mm0.591 in |
| Width retaining slot | bn | 12.5 mm0.492 in |
| Radius retaining slot | rn | 2.5 mm0.098 in |
| Angle retaining slot | 45 ° | |
| Contact angle | α | 35 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 200 °C392 °F |
Capabilities & suitability7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Largebearing | Yes |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 366560 | |
| Brand | FAG | |
| Base Type | QJ248 | |
| Old Designation | ["QJ248N2MPA.C3"] | |
| SAP material number | 0192615190030 | |
| Base product | 230508AD41 | |
| Bearing X designation | QJ248-N2-MPA-C3 | |
| Mounting Manager ID | QJ248-N2-MPA-C3 | |
| Grease application ID | QJ248-N2-MPA-C3 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Four point contact bearing QJ2..-N2-MPA, holding grooves, solid brass cage | |
| Short Description | Four-point contact bearing |
Technical Data22 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 240 mm | |
| Outside Diameter (D) | 440 mm | |
| Width (B) | 72 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 690,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,270,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 2,550 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 1,250 1/min | |
| Angle Retaining Slot (Angle Retain) | 45 ° | |
| Hight Retaining Slot (An) | 15 mm | |
| Radius Retaining Slot (Rn) | 2.5 mm | |
| Fatigue Load Limit, Radial (Cur) | 39,500 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 257 mm | |
| Shoulder Diameter Inner Ring (D1) | 313.65 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 423 mm | |
| Minimum Chamfer Dimension (Rmin) | 4 mm | |
| Maximum Fillet Radius (Ra Max) | 3 mm | |
| Shoulder Diameter Outer Ring (D1) | 369 mm | |
| Contact Angle (Α) | 35 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 238.1 mm | |
| Width Retaining Slot (Bn) | 12.5 mm |
