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 | QJ1256 | |
| Bore diameter | d | 280 mm |
| Outside diameter | D | 500 mm |
| Width | B | 90 mm |
| Basic dynamic load rating | C | 790 kN |
| Basic static load rating | C0 | 1600 kN |
| Fatigue load limit | Pu | 45.5 kN |
| Reference speed | nref | 1110 r/min |
| Limiting speed | nG | 2240 r/min |
| Mass | ≈m | 81.8 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 | 280 mm11.024 in |
| Outside diameter | D | 500 mm19.685 in |
| Width | B | 90 mm3.543 in |
| Basic dynamic load rating, radial | Cr | 790,000 N177,607.914 lbf |
| Basic static load rating, radial | C0r | 1,600,000 N359,712.23 lbf |
| Fatigue load limit, radial | Cur | 45,500 N10,229.317 lbf |
| Limiting speed | nG | 2,240 1/min |
| Reference speed | nϑr | 1,110 1/min |
| Mass | ≈m | 81.8 kg180.338 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 300 mm11.811 in |
| Maximum diameter of housing shoulder | Da max | 480 mm18.898 in |
| Maximum fillet radius | ra max | 4 mm0.157 in |
Dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 5 mm0.197 in |
| Shoulder diameter outer ring | D1 | 420.8 mm16.567 in |
| Shoulder diameter inner ring | d1 | 362.45 mm14.27 in |
| Distance between the apexes of the pressure cones | a | 390 mm15.354 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 | 45 ° |
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 Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 366491 | |
| Brand | FAG | |
| Base Type | QJ1256 | |
| SAP material number | 0543081600030 | |
| Base product | 230508AD41 | |
| Bearing X designation | QJ1256-N2-MPA-C3 | |
| Mounting Manager ID | QJ1256-N2-MPA-C3 | |
| Grease application ID | QJ1256-N2-MPA-C3 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Four point contact bearing QJ12..-N2-MPA, holding grooves, solid brass cage | |
| Short Description | Four-point contact bearing |
Technical Data22 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 280 mm | |
| Outside Diameter (D) | 500 mm | |
| Width (B) | 90 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 790,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,600,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 2,240 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 1,110 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) | 45,500 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 300 mm | |
| Shoulder Diameter Inner Ring (D1) | 362.45 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 480 mm | |
| Minimum Chamfer Dimension (Rmin) | 5 mm | |
| Maximum Fillet Radius (Ra Max) | 4 mm | |
| Shoulder Diameter Outer Ring (D1) | 420.8 mm | |
| Contact Angle (Α) | 45 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 390 mm | |
| Width Retaining Slot (Bn) | 12.5 mm |