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 | QJ306 | |
| Bore diameter | d | 30 mm |
| Outside diameter | D | 72 mm |
| Width | B | 19 mm |
| Basic dynamic load rating | C | 57 kN |
| Basic static load rating | C0 | 38.5 kN |
| Fatigue load limit | Pu | 2.7 kN |
| Reference speed | nref | 7800 r/min |
| Limiting speed | nG | 19600 r/min |
| Mass | ≈m | 0.403 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 | 150 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tolerance class | PN | Normal (ISO 492:2023) |
| Cage | MPA | Solid brass cage, outer ring guided |
| Dimensional / heat stabilization | S0 | Rings dimensional stabilized up to 150° |
| Axial internal clearance | CN | Group N (CN) |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 30 mm1.181 in |
| Outside diameter | D | 72 mm2.835 in |
| Width | B | 19 mm0.748 in |
| Basic dynamic load rating, radial | Cr | 57,000 N12,814.748 lbf |
| Basic static load rating, radial | C0r | 38,500 N8,655.576 lbf |
| Fatigue load limit, radial | Cur | 2,700 N607.014 lbf |
| Limiting speed | nG | 19,600 1/min |
| Reference speed | nϑr | 7,800 1/min |
| Mass | ≈m | 0.403 kg0.888 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 37 mm1.457 in |
| Maximum diameter of housing shoulder | Da max | 65 mm2.559 in |
| Maximum fillet radius | ra max | 1 mm0.039 in |
Dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.1 mm0.043 in |
| Shoulder diameter outer ring | D1 | 58 mm2.283 in |
| Shoulder diameter inner ring | d1 | 44 mm1.732 in |
| Distance between the apexes of the pressure cones | a | 35.7 mm1.406 in |
| Contact angle | α | 35 ° |
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 | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes |
Manufacturer Identity10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 366808 | |
| Brand | FAG | |
| Base Type | QJ306 | |
| Old Designation | ["QJ306-MPA"] | |
| X Life Marking | XL | |
| SAP material number | 0167424430000 | |
| Base product | 230508AD41 | |
| Bearing X designation | QJ306-XL-MPA | |
| Mounting Manager ID | QJ306-XL-MPA | |
| Grease application ID | QJ306-XL-MPA |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Four point contact bearing QJ3..-XL-MPA, X-life, solid brass cage | |
| Short Description | Four-point contact bearing |
Technical Data18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 30 mm | |
| Outside Diameter (D) | 72 mm | |
| Width (B) | 19 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 57,000 N | |
| Basic Static Load Rating, Radial (C0R) | 38,500 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 19,600 1/min | |
| Operating Temperature Max. (Tmax) | 150 °C | |
| Reference Speed (Nϑr) | 7,800 1/min | |
| Fatigue Load Limit, Radial (Cur) | 2,700 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 37 mm | |
| Shoulder Diameter Inner Ring (D1) | 44 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 65 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | |
| Maximum Fillet Radius (Ra Max) | 1 mm | |
| Shoulder Diameter Outer Ring (D1) | 58 mm | |
| Contact Angle (Α) | 35 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 35.7 mm |
