Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications16 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 7318 | |
| Bore diameter | d | 90 mm |
| Outside diameter | D | 190 mm |
| Width | B | 43 mm |
| Basic dynamic load rating | C | 171 kN |
| Basic static load rating | C0 | 144 kN |
| Fatigue load limit | Pu | 8.4 kN |
| Reference speed | nref | 3950 r/min |
| Limiting speed | nG | 4650 r/min |
| Mass | ≈m | 5.169 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Sealing | Without — Not sealed | |
| Cage | JP — Steel sheet metal | |
| Lubricant | Without — Bearing not greased | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 150 °C |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 1Derived from ISO Normal; not a direct ABEC marking | |
| Mapping basis | ISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value. |
Product characteristics6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design variant | B | |
| Type of Seal | Without | Not sealed |
| Cage | JP | Steel sheet metal |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | S0 | Rings dimensional stabilized up to 150° |
| Lubricant | Without | Bearing not greased |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 90 mm3.543 in |
| Outside diameter | D | 190 mm7.48 in |
| Width | B | 43 mm1.693 in |
| Basic dynamic load rating, radial | Cr | 171,000 N38,444.245 lbf |
| Basic static load rating, radial | C0r | 144,000 N32,374.101 lbf |
| Fatigue load limit, radial | Cur | 8,400 N1,888.489 lbf |
| Limiting speed | nG | 4,650 1/min |
| Reference speed | nϑr | 3,950 1/min |
| Mass | ≈m | 5.169 kg11.396 lbs |
Mounting dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter of shaft shoulder | da min | 104 mm4.094 in |
| Maximum diameter of housing shoulder | Da max | 176 mm6.929 in |
| Maximum diameter of housing shoulder | Db max | 183 mm7.205 in |
| Maximum fillet radius of shaft | ra max | 2.5 mm0.098 in |
| Maximum fillet radius of housing | ra1 max | 1 mm0.039 in |
Dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 3 mm0.118 in |
| Minimum chamfer dimension | r1 min | 1.1 mm0.043 in |
| Shoulder diameter on outer ring wide side face | D1 | 152.14 mm5.99 in |
| Shoulder diameter on inner ring wide side face | d1 | 130.3 mm5.13 in |
| Distance between the apexes of the pressure cones | a | 80.2 mm3.157 in |
| Contact angle | α | 40 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 150 °C302 °F |
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 Identity10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 359883 | |
| Brand | FAG | |
| Base Type | 7318 | |
| Old Designation | ["7318-B-JP","7318B.JP"] | |
| X Life Marking | XL | |
| SAP material number | 0191180150000 | |
| Base product | 2305080301 | |
| Bearing X designation | 7318-B-XL-JP | |
| Mounting Manager ID | 7318-B-XL-JP | |
| Grease application ID | 7318-B-XL-JP |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Angular contact ball bearing 73..-B-XL-JP, single row, X-life, steel sheet metal cage | |
| Short Description | Angular contact ball bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 90 mm | |
| Outside Diameter (D) | 190 mm | |
| Width (B) | 43 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 171,000 N | |
| Basic Static Load Rating, Radial (C0R) | 144,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 4,650 1/min | |
| Operating Temperature Max. (Tmax) | 150 °C | |
| Reference Speed (Nϑr) | 3,950 1/min | |
| Maximum Diameter Of Housing Shoulder (Db Max) | 183 mm | |
| Fatigue Load Limit, Radial (Cur) | 8,400 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 104 mm | |
| Shoulder Diameter Inner Ring (D1) | 130.3 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 176 mm | |
| Minimum Chamfer Dimension (Rmin) | 3 mm | |
| Maximum Fillet Radius (Ra Max) | 2.5 mm | |
| Maximum Recess Radius (Ra1 Max) | 1 mm | |
| Shoulder Diameter Outer Ring (D1) | 152.14 mm | |
| Minimum Chamfer Dimension (R1 Min) | 1.1 mm | |
| Contact Angle (Α) | 40 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 80.2 mm |
