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 | QJ338 | |
| Bore diameter | d | 190 mm |
| Outside diameter | D | 400 mm |
| Width | B | 78 mm |
| Basic dynamic load rating | C | 740 kN |
| Basic static load rating | C0 | 1250 kN |
| Fatigue load limit | Pu | 40.5 kN |
| Reference speed | nref | 1320 r/min |
| Limiting speed | nG | 2850 r/min |
| Mass | ≈m | 51.4 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 | 190 mm7.48 in |
| Outside diameter | D | 400 mm15.748 in |
| Width | B | 78 mm3.071 in |
| Basic dynamic load rating, radial | Cr | 740,000 N166,366.906 lbf |
| Basic static load rating, radial | C0r | 1,250,000 N281,025.18 lbf |
| Fatigue load limit, radial | Cur | 40,500 N9,105.216 lbf |
| Limiting speed | nG | 2,850 1/min |
| Reference speed | nϑr | 1,320 1/min |
| Mass | ≈m | 51.4 kg113.317 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 210 mm8.268 in |
| Maximum diameter of housing shoulder | Da max | 380 mm14.961 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 | 329.1 mm12.957 in |
| Shoulder diameter inner ring | d1 | 263.9 mm10.39 in |
| Distance between the apexes of the pressure cones | a | 206.6 mm8.134 in |
| Hight retaining slot | an | 12.7 mm0.5 in |
| Width retaining slot | bn | 10.5 mm0.413 in |
| Radius retaining slot | rn | 2 mm0.079 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 | 366779 | |
| Brand | FAG | |
| Base Type | QJ338 | |
| Old Designation | ["QJ338N2MPA.C3"] | |
| SAP material number | 0192626390030 | |
| Base product | 230508AD41 | |
| Bearing X designation | QJ338-N2-MPA-C3 | |
| Mounting Manager ID | QJ338-N2-MPA-C3 | |
| Grease application ID | QJ338-N2-MPA-C3 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Four point contact bearing QJ3..-N2-MPA, holding grooves, solid brass cage | |
| Short Description | Four-point contact bearing |
Technical Data22 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 190 mm | |
| Outside Diameter (D) | 400 mm | |
| Width (B) | 78 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 740,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,250,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 2,850 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 1,320 1/min | |
| Angle Retaining Slot (Angle Retain) | 45 ° | |
| Hight Retaining Slot (An) | 12.7 mm | |
| Radius Retaining Slot (Rn) | 2 mm | |
| Fatigue Load Limit, Radial (Cur) | 40,500 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 210 mm | |
| Shoulder Diameter Inner Ring (D1) | 263.9 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 380 mm | |
| Minimum Chamfer Dimension (Rmin) | 5 mm | |
| Maximum Fillet Radius (Ra Max) | 4 mm | |
| Shoulder Diameter Outer Ring (D1) | 329.1 mm | |
| Contact Angle (Α) | 35 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 206.6 mm | |
| Width Retaining Slot (Bn) | 10.5 mm |