Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications16 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 708/900 | |
| Bore diameter | d | 900 mm |
| Outside diameter | D | 1090 mm |
| Width | B | 60 mm |
| Basic dynamic load rating | C | 540 kN |
| Basic static load rating | C0 | 1680 kN |
| Fatigue load limit | Pu | 28 kN |
| Reference speed | nref | 350 r/min |
| Limiting speed | nG | 790 r/min |
| Mass | ≈m | 123 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Sealing | Without — Not sealed | |
| Cage | MPB — Solid brass cage, inner ring guided | |
| Lubricant | Without — Bearing not greased | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 1Derived from ISO Normal; not a direct ABEC marking | |
| Mapping basis | ISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value. |
Product characteristics5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type of Seal | Without | Not sealed |
| Cage | MPB | Solid brass cage, inner ring guided |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
| Lubricant | Without | Bearing not greased |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 900 mm35.433 in |
| Outside diameter | D | 1,090 mm42.913 in |
| Width | B | 60 mm2.362 in |
| Basic dynamic load rating, radial | Cr | 540,000 N121,402.878 lbf |
| Basic static load rating, radial | C0r | 1,680,000 N377,697.842 lbf |
| Fatigue load limit, radial | Cur | 28,000 N6,294.964 lbf |
| Limiting speed | nG | 790 1/min |
| Reference speed | nϑr | 350 1/min |
| Mass | ≈m | 123 kg271.168 lbs |
Mounting dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter of shaft shoulder | da min | 918 mm36.142 in |
| Maximum diameter of housing shoulder | Da max | 1,072 mm42.205 in |
| Maximum diameter of housing shoulder | Db max | 1,081.2 mm42.567 in |
| Maximum fillet radius of shaft | ra max | 4 mm0.157 in |
| Maximum fillet radius of housing | ra1 max | 2 mm0.079 in |
Dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 5 mm0.197 in |
| Minimum chamfer dimension | r1 min | 2 mm0.079 in |
| Shoulder diameter on outer ring wide side face | D1 | 1,013 mm39.882 in |
| Shoulder diameter on inner ring wide side face | d1 | 973.6 mm38.331 in |
| Distance between the apexes of the pressure cones | a | 317.2 mm12.488 in |
| Contact angle | α | 30 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 200 °C392 °F |
Capabilities & suitability6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Largebearing | Yes |
Manufacturer Identity7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1747425 | |
| Brand | FAG | |
| Base Type | 708/900 | |
| Base product | 2305080301 | |
| Bearing X designation | 708/900-MPB | |
| Mounting Manager ID | 708/900-MPB | |
| Grease application ID | 708/900-MPB |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Angular contact ball bearing708..-MPB, single row, solid brass cage | |
| Short Description | Angular contact ball bearing |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 900 mm | |
| Outside Diameter (D) | 1,090 mm | |
| Width (B) | 60 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 540,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,680,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 790 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 350 1/min | |
| Maximum Diameter Of Housing Shoulder (Db Max) | 1,081.2 mm | |
| Fatigue Load Limit, Radial (Cur) | 28,000 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 918 mm | |
| Shoulder Diameter Inner Ring (D1) | 973.6 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 1,072 mm | |
| Minimum Chamfer Dimension (Rmin) | 5 mm | |
| Maximum Fillet Radius (Ra Max) | 4 mm | |
| Maximum Recess Radius (Ra1 Max) | 2 mm | |
| Shoulder Diameter Outer Ring (D1) | 1,013 mm | |
| Minimum Chamfer Dimension (R1 Min) | 2 mm | |
| Contact Angle (Α) | 30 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 317.2 mm |