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 | B7211 | |
| Bore diameter | d | 55 mm |
| Outside diameter | D | 100 mm |
| Width | B | 21 mm |
| Basic dynamic load rating | C | 47 kN |
| Basic static load rating | C0 | 26.5 kN |
| Fatigue load limit | Pu | 2.8 kN |
| Mass | ≈m | 0.621 kg |
| Precision class | P4S — Tolerance class P4S, FAG standard better than P4 to ISO 492:2023 | |
| Cage | T — Laminated fabric cage | |
| Lubricant | GA21 — Grease for super precision bearings, standard | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 80 °C |
Product characteristics6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Preload class | L | Preload light |
| Contact angle | C | Contact angle 15° |
| Tolerance class | P4S | Tolerance class P4S, FAG standard better than P4 to ISO 492:2023 |
| Cage | T | Laminated fabric cage |
| Arrangement bearing set | U | Single bearing |
| Lubricant | GA21 | Grease for super precision bearings, standard |
Main Dimensions & Performance Data8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 55 mm2.165 in |
| Outside diameter | D | 100 mm3.937 in |
| Width | B | 21 mm0.827 in |
| Basic dynamic load rating, radial | Cr | 47,000 N10,566.547 lbf |
| Basic static load rating, radial | C0r | 26,500 N5,957.734 lbf |
| Fatigue load limit, radial | Cur | 2,800 N629.496 lbf |
| Limiting speed for grease lubrication | nG Grease | 14,000 1/min |
| Mass | ≈m | 0.621 kg1.369 lbs |
Mounting dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter shaft shoulder | da | 63 mm2.48 in |
| Diameter shaft shoulder clearance | da | h12 |
| Shoulder diameter outer ring | Da | 92 mm3.622 in |
| Shoulder diameter outer ring clearance | Da | H12 |
| Maximum recess radius | ra max | 1.5 mm0.059 in |
| Maximum recess radius | ra1 max | 0.6 mm0.024 in |
| Distance between the apexes of the pressure cones | a | 20.9 mm0.823 in |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.5 mm0.059 in |
| Minimum chamfer dimension | r1 min | 1.5 mm0.059 in |
| Contact angle | α | 15 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 80 °C176 °F |
Capabilities & suitability5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Lifetimelubricationfreedomfrommaintenance | Yes | |
| Suitable for grease lubrication | Yes | |
| Sealedonbothsides | Yes |
Manufacturer Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 363193 | |
| Brand | FAG | |
| Base Type | B7211 | |
| X Life Marking | n.r. | |
| SAP material number | 0397745620000 | |
| Base product | 2305080311 | |
| Bearing X designation | B7211-C-2RSD-T-P4S | |
| Mounting Manager ID | B7211-C-2RSD-T-P4S |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Spindle bearing B72..-C-2RSD, adjusted, in pairs or sets, contact angle α = 15°, lip seals on both sides, non-contact, restricted tolerances | |
| Short Description | Spindle bearing |
Additional information9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Preload force light | FV L | 258 N58.004 lbf |
| Preload force medium | FV M | 832 N187.05 lbf |
| Preload force heavy | FV H | 1,662 N373.651 lbf |
| Lift-off force light | KaE L | 800 N179.856 lbf |
| Lift-off force medium | KaE M | 2,800 N629.496 lbf |
| Lift-off force heavy | KaE H | 5,985 N1,345.549 lbf |
| Axial rigidity light | ca L | 67 N/µm |
| Axial rigidity medium | ca M | 114 N/µm |
| Axial rigidity heavy | ca H | 163 N/µm |
Technical Data26 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 55 mm | |
| Outside Diameter (D) | 100 mm | |
| Width (B) | 21 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 47,000 N | |
| Basic Static Load Rating, Radial (C0R) | 26,500 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Operating Temperature Max. (Tmax) | 80 °C | |
| Axial Rigidity Heavy (Ca H) | 163 N/µm | |
| Axial Rigidity Light (Ca L) | 67 N/µm | |
| Axial Rigidity Medium (Ca M) | 114 N/µm | |
| Diameter Shaft Shoulder (Da) | 63 mm | |
| Lift Off Force Heavy (Kae H) | 5,985 N | |
| Lift Off Force Light (Kae L) | 800 N | |
| Lift Off Force Medium (Kae M) | 2,800 N | |
| Preload Force Heavy (Fv H) | 1,662 N | |
| Preload Force Light (Fv L) | 258 N | |
| Preload Force Medium (Fv M) | 832 N | |
| Shoulder Diameter Outer Ring (Da) | 92 mm | |
| Limiting Speed For Grease Lubrication (Ng Grea) | 14,000 1/min | |
| Fatigue Load Limit, Radial (Cur) | 2,800 N | |
| Minimum Chamfer Dimension (Rmin) | 1.5 mm | |
| Maximum Fillet Radius (Ra Max) | 1.5 mm | |
| Maximum Recess Radius (Ra1 Max) | 0.6 mm | |
| Minimum Chamfer Dimension (R1 Min) | 1.5 mm | |
| Contact Angle (Α) | 15 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 20.9 mm |
