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 | 320/28 | |
| Bore diameter | d | 28 mm |
| Outside diameter | D | 52 mm |
| Width | B | 16 mm |
| Basic dynamic load rating | C | 32.5 kN |
| Basic static load rating | C0 | 38.5 kN |
| Fatigue load limit | Pu | 4.55 kN |
| Reference speed | nref | 8500 r/min |
| Limiting speed | nG | 14300 r/min |
| Mass | ≈m | 0.15 kg |
| Precision class | P6X — Class 6X (ISO 492:2023) | |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tolerance class | P6X | Class 6X (ISO 492:2023) |
| Heat treatment | W60C | Carbonitrided |
| Cage | Standard | Sheet steel cage, window cage, roller-guided |
| Internal design | Standard | |
| Quality level | Standard | |
| Number of rows | 1 | Single-row design |
Main Dimensions & Performance Data11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 28 mm1.102 in |
| Outside diameter | D | 52 mm2.047 in |
| Width, inner ring | B | 16 mm0.63 in |
| Width, outer ring | C | 12 mm0.472 in |
| Width, total | T | 16 mm0.63 in |
| Basic dynamic load rating, radial | Cr | 32,500 N7,306.655 lbf |
| Basic static load rating, radial | C0r | 38,500 N8,655.576 lbf |
| Fatigue load limit, radial | Cur | 4,550 N1,022.932 lbf |
| Limiting speed | nG | 14,300 1/min |
| Thermal speed rating | nϑr | 8,500 1/min |
| Mass | ≈m | 0.15 kg0.331 lbs |
Mounting dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Maximum diameter of shaft shoulder | da max | 33 mm1.299 in |
| Minimum diameter of shaft shoulder | db min | 34 mm1.339 in |
| Minimum diameter of housing shoulder | Da min | 45 mm1.772 in |
| Maximum diameter of housing shoulder | Da max | 46 mm1.811 in |
| Minimum diameter of housing shoulder | Db min | 49 mm1.929 in |
| Minimum axial space | Ca min | 3 mm0.118 in |
| Minimum axial space | Cb min | 4 mm0.157 in |
| Maximum fillet radius of shaft | ra max | 1 mm0.039 in |
| Maximum fillet radius of housing | rb max | 1 mm0.039 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension of inner ring back face | r1, 2 min | 1 mm0.039 in |
| Minimum chamfer dimension of outer ring back face | r3, 4 min | 1 mm0.039 in |
| Distance between the apexes of the pressure cones | a | 12.5 mm0.492 in |
| Guidance rib diameter of inner ring | d1 | 40.8 mm1.606 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Calculation factors3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y | e | 0.43 |
| Dynamic axial load factor | Y | 1.39 |
| Static axial load factor | Y0 | 0.77 |
Capabilities & suitability5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes |
Manufacturer Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 2268966 | |
| Brand | FAG | |
| Base Type | 320/28 | |
| Base product | 2305091001 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Tapered roller bearings 320, main dimensions acc. to DIN 720, separable | |
| Short Description | Tapered roller bearing |
Technical Data28 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 28 mm | |
| Outside Diameter (D) | 52 mm | |
| Width (B) | 16 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 32,500 N | |
| Basic Static Load Rating, Radial (C0R) | 38,500 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 14,300 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Reference Speed (Nϑr) | 8,500 1/min | |
| Maximum Fillet Radius Of Housing (Rb Max) | 1 mm | |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 1 mm | |
| Minimum Diameter Of Housing Shoulder (Da Min) | 45 mm | |
| Minimum Diameter Of Housing Shoulder (Db Min) | 49 mm | |
| Width, Outer Ring (C) | 12 mm | |
| Fatigue Load Limit, Radial (Cur) | 4,550 N | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.43 | |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 33 mm | |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 34 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 46 mm | |
| Dynamic Axial Load Factor (Y) | 1.39 | |
| Maximum Fillet Radius (Ra Max) | 1 mm | |
| Minimum Axial Space (Cb Min) | 4 mm | |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 1 mm | |
| Guidance Rib Diameter Of Inner Ring (D1) | 40.8 mm | |
| Minimum Axial Space (Ca Min) | 3 mm | |
| Width, Inner Ring (B) | 16 mm | |
| Static Axial Load Factor (Y0) | 0.77 | |
| Distance Between The Apexes Of The Pressure Cones (A) | 12.5 mm |