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 | 21306 | |
| Bore diameter | d | 30 mm |
| Outside diameter | D | 72 mm |
| Width | B | 19 mm |
| Basic dynamic load rating | C | 72 kN |
| Basic static load rating | C0 | 63 kN |
| Fatigue load limit | Pu | 7.2 kN |
| Reference speed | nref | 7300 r/min |
| Limiting speed | nG | 12000 r/min |
| Mass | ≈m | 0.381 kg |
| Internal clearance | C3 (Group 3) — Internal clearance larger than CN | |
| Cage | TVPB — Plastic cage | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Cage | TVPB | Plastic cage |
| Radial internal clearance | C3 (Group 3) | Internal clearance larger than CN |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 30 mm1.181 in |
| Outside diameter | D | 72 mm2.835 in |
| Width | B | 19 mm0.748 in |
| Basic dynamic load rating, radial | Cr | 72,000 N16,187.05 lbf |
| Basic static load rating, radial | C0r | 63,000 N14,163.669 lbf |
| Fatigue load limit, radial | Cur | 7,200 N1,618.705 lbf |
| Limiting speed | nG | 12,000 1/min |
| Reference speed | nϑr | 7,300 1/min |
| Mass | ≈m | 0.381 kg0.84 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 37 mm1.457 in |
| Maximum diameter of housing shoulder | Da max | 65 mm2.559 in |
| Maximum recess radius | ra max | 1 mm0.039 in |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.1 mm0.043 in |
| Bore diameter outer ring | D1 | 59.9 mm2.358 in |
| Raceway diameter of the inner ring | d2 | 41.5 mm1.634 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Calculation factors4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y | e | 0.27 |
| Dynamic axial load factor | Y1 | 2.49 |
| Dynamic axial load factor | Y2 | 3.71 |
| Static axial load factor | Y0 | 2.43 |
Manufacturer Identity7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 386658 | |
| Brand | FAG | |
| Base Type | 21306 | |
| Old Designation | ["21306E1TVPB.C3","21306-E1-TVPB-C3"] | |
| X Life Marking | XL | |
| SAP material number | 0167022390030 | |
| Base product | 2305091101 |
Product Identity1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Short Description | Spherical Roller Bearing |
Technical Data20 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 30 mm | |
| Outside Diamater (D) | 72 mm | |
| Total Width (B) | 19 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 72,000 N | |
| Basic Static Load Rating, Radial (C0R) | 63,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 37 mm | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Limiting Speed (Limiting Spe) | 12,000 1/min | |
| Reference Speed (Nϑr) | 7,300 1/min | |
| Maximum Recess Radius (Ra Max) | 1 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 65 mm | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.27 | |
| Dynamic Axial Load Factor (Y1) | 2.49 | |
| Bore Diameter Outer Ring (D1) | 59.9 mm | |
| Raceway Diameter Of The Inner Ring (D2) | 41.5 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | |
| Static Axial Load Factor (Y0) | 2.43 | |
| Dynamic Axial Load Factor (Y2) | 3.71 | |
| Fatigue Load Limit, Radial (Cur) | 7,200 N |
