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 | 231SM125 | |
| Bore diameter | d | 125 mm |
| Outside diameter | D | 225 mm |
| Width | B | 68 mm |
| Basic dynamic load rating | C | 510 kN |
| Basic static load rating | C0 | 750 kN |
| Fatigue load limit | Pu | 52 kN |
| Limiting speed | nG | 1130 r/min |
| Mass | ≈m | 13.5 kg |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Cage | MA — Solid brass cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Design | E1A | Without central rip |
| Bore type | Z | Cylindrical |
| Cage | MA | Solid brass cage |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Relubrication feature | Standard | |
| Splitted | SM | Split bearing metric |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 125 mm4.921 in |
| Outside diameter | D | 225 mm8.858 in |
| Width, outer ring | C | 68 mm2.677 in |
| Basic dynamic load rating, radial | Cr | 510,000 N114,658.273 lbf |
| Basic static load rating, radial | C0r | 750,000 N168,615.108 lbf |
| Fatigue load limit, radial | Cur | 52,000 N11,690.647 lbf |
| Limiting speed | nG | 1,130 1/min |
| Maximum axial load | Fa max | 13,800 N3,102.518 lbf |
| Mass | ≈m | 13.5 kg29.762 lbs |
Mounting dimensions2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tightening torque clamping screw | Mi | 35 Nm25.811 ft-lbs |
| Tightening torque clamping screw | Ma | 8.5 Nm6.268 ft-lbs |
Dimensions2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 2.1 mm0.083 in |
| Width inner ring | B | 110 mm4.331 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 | 0.28 |
| Dynamic axial load factor | Y1 | 2.45 |
| Dynamic axial load factor | Y2 | 3.64 |
| Static axial load factor | Y0 | 2.39 |
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 | |
| Split | Yes | |
| Staticangularerrorandmisalignment | Yes | |
| Dynamicangularerrorandmisalignment | Yes |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1717997 | |
| Brand | FAG | |
| Base Type | 231SM125 | |
| X Life Marking | n.r. | |
| Base product | 2305091140 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 231..-MA, symmetric split | |
| Short Description | Spherical Roller Bearing |
Additional information2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bearing designation | 23128K | |
| Adapter sleeve | H3128 |
Technical Data18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 125 mm | |
| Outside Diamater (D) | 225 mm | |
| Width, Outer Ring (C) | 68 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 510,000 N | |
| Basic Static Load Rating, Radial (C0R) | 750,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 1,130 1/min | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.28 | |
| Width Inner Ring (B) | 110 mm | |
| Dynamic Axial Load Factor (Y1) | 2.45 | |
| Tightening Torque Clamping Screw (Mi) | 35 Nm | |
| Maximum Axial Load (Fa Max) | 13,800 N | |
| Minimum Chamfer Dimension (Rmin) | 2.1 mm | |
| Static Axial Load Factor (Y0) | 2.39 | |
| Tightening Torque Clamping Screw (Ma) | 8.5 Nm | |
| Dynamic Axial Load Factor (Y2) | 3.64 | |
| Fatigue Load Limit, Radial (Cur) | 52,000 N |
