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 | 248/1800 | |
| Bore diameter | d | 1800 mm |
| Outside diameter | D | 2180 mm |
| Width | B | 375 mm |
| Basic dynamic load rating | C | 18700 kN |
| Basic static load rating | C0 | 67000 kN |
| Fatigue load limit | Pu | 3500 kN |
| Reference speed | nref | 42 r/min |
| Limiting speed | nG | 201 r/min |
| Mass | ≈m | 2990 kg |
| Internal clearance | C3 (Group 3) — Internal clearance larger than CN | |
| Cage | MB — Solid brass cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design | B | With fixed central rib |
| Bore type | K30 | Tapered, taper 1:30 |
| Cage | MB | Solid brass cage |
| Radial internal clearance | C3 (Group 3) | Internal clearance larger than CN |
| Relubrication feature | Standard |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 1,800 mm70.866 in |
| Outside diameter | D | 2,180 mm85.827 in |
| Width | B | 375 mm14.764 in |
| Basic dynamic load rating, radial | Cr | 18,700,000 N4,204,136.691 lbf |
| Basic static load rating, radial | C0r | 67,000,000 N15,062,949.64 lbf |
| Fatigue load limit, radial | Cur | 3,500,000 N786,870.504 lbf |
| Limiting speed | nG | 201 1/min |
| Reference speed | nϑr | 42 1/min |
| Mass | ≈m | 2,990 kg6,591.814 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 1,834 mm72.205 in |
| Maximum diameter of housing shoulder | Da max | 2,146 mm84.488 in |
| Maximum recess radius | ra max | 8 mm0.315 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 9.5 mm0.374 in |
| Bore diameter outer ring | D1 | 2,060 mm81.102 in |
| Diameter lubrication hole | ds | 12.5 mm0.492 in |
| Width of lubricating groove | ns | 23.5 mm0.925 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 | 4.47 |
| Dynamic axial load factor | Y2 | 6.65 |
| Static axial load factor | Y0 | 4.37 |
Manufacturer Identity7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 390318 | |
| Brand | FAG | |
| Base Type | 248/1800 | |
| Old Designation | ["248/1800BK30MB.C3"] | |
| X Life Marking | n.r. | |
| SAP material number | 0390121740030 | |
| Base product | 2305091131 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 248..-B-K30-MB, symmetric 3 ribs | |
| Short Description | Spherical Roller Bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 1,800 mm | |
| Outside Diamater (D) | 2,180 mm | |
| Total Width (B) | 375 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 18,700,000 N | |
| Basic Static Load Rating, Radial (C0R) | 67,000,000 N | |
| Diameter Lubrication Hole (Ds) | 12.5 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 1,834 mm | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 201 1/min | |
| Reference Speed (Nϑr) | 42 1/min | |
| Maximum Recess Radius (Ra Max) | 8 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 2,146 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) | 23.5 mm | |
| Dynamic Axial Load Factor (Y1) | 4.47 | |
| Bore Diameter Outer Ring (D1) | 2,060 mm | |
| Minimum Chamfer Dimension (Rmin) | 9.5 mm | |
| Static Axial Load Factor (Y0) | 4.37 | |
| Dynamic Axial Load Factor (Y2) | 6.65 | |
| Fatigue Load Limit, Radial (Cur) | 3,500,000 N |
