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 | 708/670 | |
| Bore diameter | d | 670 mm |
| Outside diameter | D | 820 mm |
| Width | B | 48 mm |
| Basic dynamic load rating | C | 395 kN |
| Basic static load rating | C0 | 1020 kN |
| Fatigue load limit | Pu | 19.4 kN |
| Reference speed | nref | 500 r/min |
| Limiting speed | nG | 1080 r/min |
| Mass | ≈m | 51.6 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 | 670 mm26.378 in |
| Outside diameter | D | 820 mm32.283 in |
| Width | B | 48 mm1.89 in |
| Basic dynamic load rating, radial | Cr | 395,000 N88,803.957 lbf |
| Basic static load rating, radial | C0r | 1,020,000 N229,316.547 lbf |
| Fatigue load limit, radial | Cur | 19,400 N4,361.511 lbf |
| Limiting speed | nG | 1,080 1/min |
| Reference speed | nϑr | 500 1/min |
| Mass | ≈m | 51.6 kg113.758 lbs |
Mounting dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter of shaft shoulder | da min | 682 mm26.85 in |
| Maximum diameter of housing shoulder | Da max | 808 mm31.811 in |
| Maximum diameter of housing shoulder | Db max | 814 mm32.047 in |
| Maximum fillet radius of shaft | ra max | 2.5 mm0.098 in |
| Maximum fillet radius of housing | ra1 max | 1 mm0.039 in |
Dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 3 mm0.118 in |
| Minimum chamfer dimension | r1 min | 1.1 mm0.043 in |
| Shoulder diameter on outer ring wide side face | D1 | 759.8 mm29.913 in |
| Shoulder diameter on inner ring wide side face | d1 | 727.5 mm28.642 in |
| Distance between the apexes of the pressure cones | a | 239.1 mm9.413 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 | 1747410 | |
| Brand | FAG | |
| Base Type | 708/670 | |
| Base product | 2305080301 | |
| Bearing X designation | 708/670-MPB | |
| Mounting Manager ID | 708/670-MPB | |
| Grease application ID | 708/670-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) | 670 mm | |
| Outside Diameter (D) | 820 mm | |
| Width (B) | 48 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 395,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,020,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 1,080 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 500 1/min | |
| Maximum Diameter Of Housing Shoulder (Db Max) | 814 mm | |
| Fatigue Load Limit, Radial (Cur) | 19,400 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 682 mm | |
| Shoulder Diameter Inner Ring (D1) | 727.5 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 808 mm | |
| Minimum Chamfer Dimension (Rmin) | 3 mm | |
| Maximum Fillet Radius (Ra Max) | 2.5 mm | |
| Maximum Recess Radius (Ra1 Max) | 1 mm | |
| Shoulder Diameter Outer Ring (D1) | 759.8 mm | |
| Minimum Chamfer Dimension (R1 Min) | 1.1 mm | |
| Contact Angle (Α) | 30 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 239.1 mm |