Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | BSB55120 | |
| Bore diameter | d | 55 mm |
| Outside diameter | D | 120 mm |
| Width | B | 20 mm |
| Mass | ≈m | 1.18 kg |
| Sealing | Without | |
| Cage | Standard — Polyamide cage | |
| Lubricant | L055 — Greased with Arcanol MULTITOP (L055) | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Cage | Standard | Polyamide cage |
| Type of Seal | Without | |
| Arrangement bearing set | SU | Single bearing |
| Lubricant | L055 | Greased with Arcanol MULTITOP (L055) |
Main Dimensions & Performance Data15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 55 mm2.165 in |
| Bore diameter upper tolerance | 0 mm0 in | |
| Bore diameter lower tolerance | -0.007 mm0 in | |
| Outside diameter | D | 120 mm4.724 in |
| Outside diameter upper tolerance | 0 mm0 in | |
| Outside diameter lower tolerance | -0.008 mm0 in | |
| Width | B | 20 mm0.787 in |
| Width upper tolerance | 0 mm0 in | |
| Width lower tolerance | -0.15 mm-0.006 in | |
| Basic dynamic load rating, axial | Ca | 71,000 N15,962.23 lbf |
| Basic static load rating, axial | C0a | 196,000 N44,064.748 lbf |
| Fatigue load limit, axial | Cua | 11,900 N2,675.36 lbf |
| Limiting speed for grease lubrication | nG Grease | 3,800 1/min |
| Thermally safe operating speed | nϑ | 2,300 1/min |
| Mass | ≈m | 1.18 kg2.601 lbs |
Mounting dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of housing | Da | 100.5 mm3.957 in |
| Diameter of housing clearance | Da | H12 |
| Diameter shaft | da | 79.5 mm3.13 in |
| Diameter shaft clearance | da | h12 |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.5 mm0.059 in |
| Minimum chamfer dimension | r1 min | 1.5 mm0.059 in |
| Distance between the apexes of the pressure cones | a | 88 mm3.465 in |
| Contact angle | α | 60 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Capabilities & suitability5 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 |
Manufacturer Identity7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1903920 | |
| Brand | FAG | |
| Base Type | BSB55120 | |
| X Life Marking | XL | |
| SAP material number | 0949615490000 | |
| Base product | 2305100201 | |
| Bearing X designation | BSB55120-SU-XL-L055 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Axial angular contact ball bearing BSB..-SU-XL, single direction, no screw mounting | |
| Short Description | Axial angular contact ball bearing |
Additional information7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bearing frictional torque | MR | 0.38 Nm0.28 ft-lbs |
| Rigidity axial | caL | 1,623 N/µm |
| Axial runout | 2.5 µm0.0001 in | |
| Recommended INA precision locknut for radial locking | ZM60 | |
| Recommended INA precision locknut for axial locking | AM60 | |
| Tightening torque for the recommended INA precision locknut | MA | 120 Nm88.496 ft-lbs |
| Required locknut force axial | 20,020 N4,500.899 lbf |
Technical Data27 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 55 mm | |
| Outside Diamater (D) | 120 mm | |
| Total Width (B) | 20 mm | |
| Basic Dynamic Load Rating, Axial (Ca) | 71,000 N | |
| Basic Static Load Rating, Axial (C0A) | 196,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed For Grease Lubrication (Ng Grea) | 3,800 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Fatigue Load Limit, Axial (Cua) | 11,900 N | |
| Bore Diameter Lower Tolerance (Bore Diamete) | -0.007 mm | |
| Contact Angle (Α) | 60 ° | |
| Width Lower Tolerance (Width Lower) | -0.15 mm | |
| Minimum Chamfer Dimension (R1 Min) | 1.5 mm | |
| Width Upper Tolerance (Width Upper) | 0 mm | |
| Bore Diameter Upper Tolerance (Bore Diamete) | 0 mm | |
| Diameter Of Housing (Da) | 100.5 mm | |
| Required Locknut Force Axial (Required Loc) | 20,020 N | |
| Rigidity Axial (Cal) | 1,623 N/µm | |
| Outside Diameter Lower Tolerance (Outside Diam) | -0.008 mm | |
| Tightening Torque For The Recommended Ina Precision Locknut (Ma) | 120 Nm | |
| Bearing Frictional Torque (Mr) | 0.38 Nm | |
| Diameter Shaft (Da) | 79.5 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.5 mm | |
| Axial Runout (Axial Runout) | 2.5 µm | |
| Distance Between The Apexes Of The Pressure Cones (A) | 88 mm | |
| Thermally Safe Operating Speed (Nϑ) | 2,300 1/min | |
| Outside Diameter Upper Tolerance (Outside Diam) | 0 mm |
