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 | 31318 | |
| Bore diameter | d | 90 mm |
| Outside diameter | D | 190 mm |
| Width | B | 46.5 mm |
| Basic dynamic load rating | C | 340 kN |
| Basic static load rating | C0 | 325 kN |
| Fatigue load limit | Pu | 46.5 kN |
| Reference speed | nref | 2900 r/min |
| Limiting speed | nG | 4450 r/min |
| Mass | ≈m | 5.5 kg |
| Precision class | PN — Normal (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 characteristics7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tolerance class | PN | Normal (ISO 492:2023) |
| Heat treatment | Standard | |
| Cage | Standard | Sheet steel cage, window cage, roller-guided |
| Internal design | Standard | |
| Quality level | XL | X-life |
| Version code | >A | Not marked on bearing |
| Number of rows | 1 | Single-row design |
Main Dimensions & Performance Data11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 90 mm3.543 in |
| Outside diameter | D | 190 mm7.48 in |
| Width, inner ring | B | 43 mm1.693 in |
| Width, outer ring | C | 30 mm1.181 in |
| Width, total | T | 46.5 mm1.831 in |
| Basic dynamic load rating, radial | Cr | 340,000 N76,438.849 lbf |
| Basic static load rating, radial | C0r | 325,000 N73,066.547 lbf |
| Fatigue load limit, radial | Cur | 46,500 N10,454.137 lbf |
| Limiting speed | nG | 4,450 1/min |
| Thermal speed rating | nϑr | 2,900 1/min |
| Mass | ≈m | 5.5 kg12.125 lbs |
Mounting dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Maximum diameter of shaft shoulder | da max | 109 mm4.291 in |
| Minimum diameter of shaft shoulder | db min | 104 mm4.094 in |
| Minimum diameter of housing shoulder | Da min | 151 mm5.945 in |
| Maximum diameter of housing shoulder | Da max | 176 mm6.929 in |
| Minimum diameter of housing shoulder | Db min | 179 mm7.047 in |
| Minimum axial space | Ca min | 6 mm0.236 in |
| Minimum axial space | Cb min | 16.5 mm0.65 in |
| Maximum fillet radius of shaft | ra max | 4 mm0.157 in |
| Maximum fillet radius of housing | rb max | 3 mm0.118 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension of inner ring back face | r1, 2 min | 4 mm0.157 in |
| Minimum chamfer dimension of outer ring back face | r3, 4 min | 3 mm0.118 in |
| Distance between the apexes of the pressure cones | a | 58 mm2.283 in |
| Guidance rib diameter of inner ring | d1 | 138.9 mm5.469 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 | 0.83 |
| Dynamic axial load factor | Y | 0.73 |
| Static axial load factor | Y0 | 0.4 |
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 Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 2264567 | |
| Brand | FAG | |
| Base Type | 31318 | |
| X Life Marking | XL | |
| Base product | 2305091001 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Tapered roller bearings 313, main dimensions acc. to DIN 720, separable | |
| Short Description | Tapered roller bearing |
Additional information1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Comparative designation to ISO 10317 and ISO 355 | T7GB090 |
Technical Data28 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 90 mm | |
| Outside Diameter (D) | 190 mm | |
| Width (B) | 46.5 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 340,000 N | |
| Basic Static Load Rating, Radial (C0R) | 325,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 4,450 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Reference Speed (Nϑr) | 2,900 1/min | |
| Maximum Fillet Radius Of Housing (Rb Max) | 3 mm | |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 3 mm | |
| Minimum Diameter Of Housing Shoulder (Da Min) | 151 mm | |
| Minimum Diameter Of Housing Shoulder (Db Min) | 179 mm | |
| Width, Outer Ring (C) | 30 mm | |
| Fatigue Load Limit, Radial (Cur) | 46,500 N | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.83 | |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 109 mm | |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 104 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 176 mm | |
| Dynamic Axial Load Factor (Y) | 0.73 | |
| Maximum Fillet Radius (Ra Max) | 4 mm | |
| Minimum Axial Space (Cb Min) | 16.5 mm | |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 4 mm | |
| Guidance Rib Diameter Of Inner Ring (D1) | 138.9 mm | |
| Minimum Axial Space (Ca Min) | 6 mm | |
| Width, Inner Ring (B) | 43 mm | |
| Static Axial Load Factor (Y0) | 0.4 | |
| Distance Between The Apexes Of The Pressure Cones (A) | 58 mm |