Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 20308 | |
| Bore diameter | d | 40 mm |
| Outside diameter | D | 90 mm |
| Width | B | 23 mm |
| Basic dynamic load rating | C | 76 kN |
| Basic static load rating | C0 | 81 kN |
| Fatigue load limit | Pu | 7.3 kN |
| Limiting speed | nG | 7000 r/min |
| Mass | ≈m | 0.7 kg |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Cage | TVP — Plastic cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore type | Z | Cylindrical |
| Cage | TVP | Plastic cage |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
Main Dimensions & Performance Data8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 40 mm1.575 in |
| Outside diameter | D | 90 mm3.543 in |
| Width | B | 23 mm0.906 in |
| Basic dynamic load rating, radial | Cr | 76,000 N17,086.331 lbf |
| Basic static load rating, radial | C0r | 81,000 N18,210.432 lbf |
| Fatigue load limit, radial | Cur | 7,300 N1,641.187 lbf |
| Limiting speed | nG | 7,000 1/min |
| Mass | ≈m | 0.7 kg1.543 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 49 mm1.929 in |
| Maximum diameter of housing shoulder | Da max | 81 mm3.189 in |
| Maximum recess radius | ra max | 1.5 mm0.059 in |
Dimensions2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.5 mm0.059 in |
| Bore diameter outer ring | D1 | 76.8 mm3.024 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Capabilities & suitability8 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 | |
| Staticangularerrorandmisalignment | Yes | |
| Dynamicangularerrorandmisalignment | Yes |
Manufacturer Identity6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 393172 | |
| Brand | FAG | |
| Base Type | 20308 | |
| Old Designation | ["20308T"] | |
| SAP material number | 0167020930000 | |
| Base product | 2305091290 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Barrel roller bearings 203, main dimensions to DIN 635-1 | |
| Short Description | Barrel roller bearing |
Technical Data14 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 40 mm | |
| Outside Diameter (D) | 90 mm | |
| Width (B) | 23 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 76,000 N | |
| Basic Static Load Rating, Radial (C0R) | 81,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 7,000 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Maximum Recess Radius (Ra Max) | 1.5 mm | |
| Bore Diameter Outer Ring (D1) | 76.8 mm | |
| Fatigue Load Limit, Radial (Cur) | 7,300 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 49 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 81 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.5 mm |
