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 | 23988 | |
| Bore diameter | d | 440 mm |
| Outside diameter | D | 600 mm |
| Width | B | 118 mm |
| Basic dynamic load rating | C | 2230 kN |
| Basic static load rating | C0 | 5200 kN |
| Fatigue load limit | Pu | 305 kN |
| Reference speed | nref | 620 r/min |
| Limiting speed | nG | 1130 r/min |
| Mass | ≈m | 100.85 kg |
| Internal clearance | C4 (Group 4) — Internal clearance larger than C3 | |
| 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 | C4 (Group 4) | Internal clearance larger than C3 |
| Relubrication feature | Standard |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 440 mm17.323 in |
| Outside diameter | D | 600 mm23.622 in |
| Width | B | 118 mm4.646 in |
| Basic dynamic load rating, radial | Cr | 2,230,000 N501,348.921 lbf |
| Basic static load rating, radial | C0r | 5,200,000 N1,169,064.748 lbf |
| Fatigue load limit, radial | Cur | 305,000 N68,570.144 lbf |
| Limiting speed | nG | 1,130 1/min |
| Reference speed | nϑr | 620 1/min |
| Mass | ≈m | 100.85 kg222.336 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 454.6 mm17.898 in |
| Maximum diameter of housing shoulder | Da max | 585.4 mm23.047 in |
| Maximum recess radius | ra max | 3 mm0.118 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 4 mm0.157 in |
| Bore diameter outer ring | D1 | 552.8 mm21.764 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 | 0.18 |
| Dynamic axial load factor | Y1 | 3.66 |
| Dynamic axial load factor | Y2 | 5.46 |
| Static axial load factor | Y0 | 3.58 |
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 | 390086 | |
| Brand | FAG | |
| Base Type | 23988 | |
| Old Designation | ["23988MB.C4"] | |
| X Life Marking | n.r. | |
| SAP material number | 0167090980040 | |
| Base product | 2305091131 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spherical roller bearing 239..-MB, symmetric 3 ribs | |
| Short Description | Spherical Roller Bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 440 mm | |
| Outside Diamater (D) | 600 mm | |
| Total Width (B) | 118 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 2,230,000 N | |
| Basic Static Load Rating, Radial (C0R) | 5,200,000 N | |
| Diameter Lubrication Hole (Ds) | 12.5 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 454.6 mm | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Limiting Speed (Limiting Spe) | 1,130 1/min | |
| Reference Speed (Nϑr) | 620 1/min | |
| Maximum Recess Radius (Ra Max) | 3 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 585.4 mm | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.18 | |
| Width Of Lubricating Groove (Ns) | 23.5 mm | |
| Dynamic Axial Load Factor (Y1) | 3.66 | |
| Bore Diameter Outer Ring (D1) | 552.8 mm | |
| Minimum Chamfer Dimension (Rmin) | 4 mm | |
| Static Axial Load Factor (Y0) | 3.58 | |
| Dynamic Axial Load Factor (Y2) | 5.46 | |
| Fatigue Load Limit, Radial (Cur) | 305,000 N |
