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 | 231/670 | |
| Bore diameter | d | 670 mm |
| Outside diameter | D | 1090 mm |
| Width | B | 336 mm |
| Basic dynamic load rating | C | 11000 kN |
| Basic static load rating | C0 | 23900 kN |
| Fatigue load limit | Pu | 1600 kN |
| Reference speed | nref | 230 r/min |
| Limiting speed | nG | 495 r/min |
| Mass | ≈m | 1230 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 characteristics5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design | B | With fixed central rib |
| Bore type | K | Tapered, taper 1:12 |
| 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 | 670 mm26.378 in |
| Outside diameter | D | 1,090 mm42.913 in |
| Width | B | 336 mm13.228 in |
| Basic dynamic load rating, radial | Cr | 11,000,000 N2,473,021.583 lbf |
| Basic static load rating, radial | C0r | 23,900,000 N5,373,201.439 lbf |
| Fatigue load limit, radial | Cur | 1,600,000 N359,712.23 lbf |
| Limiting speed | nG | 495 1/min |
| Reference speed | nϑr | 230 1/min |
| Mass | ≈m | 1,230 kg2,711.683 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 702 mm27.638 in |
| Maximum diameter of housing shoulder | Da max | 1,058 mm41.654 in |
| Maximum recess radius | ra max | 6 mm0.236 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 7.5 mm0.295 in |
| Bore diameter outer ring | D1 | 948.2 mm37.331 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 | 0.31 |
| Dynamic axial load factor | Y1 | 2.21 |
| Dynamic axial load factor | Y2 | 3.29 |
| Static axial load factor | Y0 | 2.16 |
Capabilities & suitability1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Largebearing | Yes |
Manufacturer Identity6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1220831 | |
| Brand | FAG | |
| Base Type | 231/670 | |
| X Life Marking | n.r. | |
| SAP material number | 0543410940000 | |
| Base product | 2305091131 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 231..-B-K-MB, symmetric 3 ribs | |
| Short Description | Spherical Roller Bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 670 mm | |
| Outside Diamater (D) | 1,090 mm | |
| Total Width (B) | 336 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 11,000,000 N | |
| Basic Static Load Rating, Radial (C0R) | 23,900,000 N | |
| Diameter Lubrication Hole (Ds) | 12.5 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 702 mm | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 495 1/min | |
| Reference Speed (Nϑr) | 230 1/min | |
| Maximum Recess Radius (Ra Max) | 6 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 1,058 mm | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.31 | |
| Width Of Lubricating Groove (Ns) | 23.5 mm | |
| Dynamic Axial Load Factor (Y1) | 2.21 | |
| Bore Diameter Outer Ring (D1) | 948.2 mm | |
| Minimum Chamfer Dimension (Rmin) | 7.5 mm | |
| Static Axial Load Factor (Y0) | 2.16 | |
| Dynamic Axial Load Factor (Y2) | 3.29 | |
| Fatigue Load Limit, Radial (Cur) | 1,600,000 N |
