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 | 248/850 | |
| Bore diameter | d | 850 mm |
| Outside diameter | D | 1030 mm |
| Width | B | 180 mm |
| Basic dynamic load rating | C | 4900 kN |
| Basic static load rating | C0 | 14900 kN |
| Fatigue load limit | Pu | 900 kN |
| Reference speed | nref | 144 r/min |
| Limiting speed | nG | 530 r/min |
| Mass | ≈m | 312 kg |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Cage | MB — Solid brass cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore type | Z | Cylindrical |
| Cage | MB | Solid brass cage |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Relubrication feature | Standard |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 850 mm33.465 in |
| Outside diameter | D | 1,030 mm40.551 in |
| Width | B | 180 mm7.087 in |
| Basic dynamic load rating, radial | Cr | 4,900,000 N1,101,618.705 lbf |
| Basic static load rating, radial | C0r | 14,900,000 N3,349,820.144 lbf |
| Fatigue load limit, radial | Cur | 900,000 N202,338.129 lbf |
| Limiting speed | nG | 530 1/min |
| Reference speed | nϑr | 144 1/min |
| Mass | ≈m | 312 kg687.841 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 868 mm34.173 in |
| Maximum diameter of housing shoulder | Da max | 1,012 mm39.843 in |
| Maximum recess radius | ra max | 4 mm0.157 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 5 mm0.197 in |
| Bore diameter outer ring | D1 | 973.9 mm38.343 in |
| Diameter lubrication hole | ds | 8 mm0.315 in |
| Width of lubricating groove | ns | 15 mm0.591 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 | 0.15 |
| Dynamic axial load factor | Y1 | 4.4 |
| Dynamic axial load factor | Y2 | 6.56 |
| Static axial load factor | Y0 | 4.31 |
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 Identity6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1718034 | |
| Brand | FAG | |
| Base Type | 248/850 | |
| Base product | 2305091131 | |
| Bearing X designation | 248/850-MB | |
| Mounting Manager ID | 248/850-MB |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 248..-MB, symmetrical, 3 boards | |
| Short Description | Spherical Roller Bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 850 mm | |
| Outside Diamater (D) | 1,030 mm | |
| Total Width (B) | 180 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 4,900,000 N | |
| Basic Static Load Rating, Radial (C0R) | 14,900,000 N | |
| Diameter Lubrication Hole (Ds) | 8 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 868 mm | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 530 1/min | |
| Reference Speed (Nϑr) | 144 1/min | |
| Maximum Recess Radius (Ra Max) | 4 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 1,012 mm | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.15 | |
| Width Of Lubricating Groove (Ns) | 15 mm | |
| Dynamic Axial Load Factor (Y1) | 4.4 | |
| Bore Diameter Outer Ring (D1) | 973.9 mm | |
| Minimum Chamfer Dimension (Rmin) | 5 mm | |
| Static Axial Load Factor (Y0) | 4.31 | |
| Dynamic Axial Load Factor (Y2) | 6.56 | |
| Fatigue Load Limit, Radial (Cur) | 900,000 N |
