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 | 248/1250 | |
| Bore diameter | d | 1250 mm |
| Outside diameter | D | 1500 mm |
| Width | B | 250 mm |
| Basic dynamic load rating | C | 9000 kN |
| Basic static load rating | C0 | 30500 kN |
| Fatigue load limit | Pu | 1260 kN |
| Reference speed | nref | 76 r/min |
| Limiting speed | nG | 320 r/min |
| Mass | ≈m | 918 kg |
| Cage | MB — Solid brass cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design | B | With fixed central rib |
| Bore type | Z | Cylindrical |
| Cage | MB | Solid brass cage |
| Relubrication feature | Standard |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 1,250 mm49.213 in |
| Outside diameter | D | 1,500 mm59.055 in |
| Width | B | 250 mm9.843 in |
| Basic dynamic load rating, radial | Cr | 9,000,000 N2,023,381.295 lbf |
| Basic static load rating, radial | C0r | 30,500,000 N6,857,014.388 lbf |
| Fatigue load limit, radial | Cur | 1,260,000 N283,273.381 lbf |
| Limiting speed | nG | 320 1/min |
| Reference speed | nϑr | 76 1/min |
| Mass | ≈m | 918 kg2,023.841 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 1,273 mm50.118 in |
| Maximum diameter of housing shoulder | Da max | 1,477 mm58.15 in |
| Maximum recess radius | ra max | 5 mm0.197 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 6 mm0.236 in |
| Bore diameter outer ring | D1 | 1,423.5 mm56.043 in |
| Diameter lubrication hole | ds | 9.5 mm0.374 in |
| Width of lubricating groove | ns | 17.7 mm0.697 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 200 °C392 °F |
Calculation factors4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y | e | 0.14 |
| Dynamic axial load factor | Y1 | 4.67 |
| Dynamic axial load factor | Y2 | 6.96 |
| Static axial load factor | Y0 | 4.57 |
Capabilities & suitability9 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 | |
| Largebearing | Yes | |
| Staticangularerrorandmisalignment | Yes | |
| Dynamicangularerrorandmisalignment | Yes |
Manufacturer Identity7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1794482 | |
| Brand | FAG | |
| Base Type | 248/1250 | |
| X Life Marking | n.r. | |
| Base product | 2305091131 | |
| Bearing X designation | 248/1250-B-MB | |
| Mounting Manager ID | 248/1250-B-MB |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 248..-B-MB, symmetric 3 ribs | |
| Short Description | Spherical Roller Bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 1,250 mm | |
| Outside Diamater (D) | 1,500 mm | |
| Total Width (B) | 250 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 9,000,000 N | |
| Basic Static Load Rating, Radial (C0R) | 30,500,000 N | |
| Diameter Lubrication Hole (Ds) | 9.5 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 1,273 mm | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 320 1/min | |
| Reference Speed (Nϑr) | 76 1/min | |
| Maximum Recess Radius (Ra Max) | 5 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 1,477 mm | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.14 | |
| Width Of Lubricating Groove (Ns) | 17.7 mm | |
| Dynamic Axial Load Factor (Y1) | 4.67 | |
| Bore Diameter Outer Ring (D1) | 1,423.5 mm | |
| Minimum Chamfer Dimension (Rmin) | 6 mm | |
| Static Axial Load Factor (Y0) | 4.57 | |
| Dynamic Axial Load Factor (Y2) | 6.96 | |
| Fatigue Load Limit, Radial (Cur) | 1,260,000 N |
