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 | 6306 | |
| Bore diameter | d | 30 mm |
| Outside diameter | D | 72 mm |
| Width | B | 19 mm |
| Basic dynamic load rating | C | 30.5 kN |
| Basic static load rating | C0 | 16.2 kN |
| Fatigue load limit | Pu | 1.05 kN |
| Limiting speed | nG | 6000 r/min |
| Mass | ≈m | 0.35 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | C3 (Group 3) — Internal clearance larger than CN | |
| Sealing | 2RSR — Contact seal on both sides | |
| Cage | JN — Steel sheet metal | |
| Lubricant | GA13 — Ball bearing and insert bearing grease | |
| Minimum operating temperature | Tmin | -20 °C |
| Maximum operating temperature | Tmax | 100 °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 characteristics7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type of Seal | 2RSR | Contact seal on both sides |
| Cage | JN | Steel sheet metal |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | SN | Rings dimensional stabilized up to 120° |
| Lubricant | GA13 | Ball bearing and insert bearing grease |
| Radial internal clearance | C3 (Group 3) | Internal clearance larger than CN |
| Bore type | Z | Cylindrical |
Main Dimensions & Performance Data8 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 | 30,500 N6,857.014 lbf |
| Basic static load rating, radial | C0r | 16,200 N3,642.086 lbf |
| Fatigue load limit, radial | Cur | 1,050 N236.061 lbf |
| Limiting speed | nG | 6,000 1/min |
| Mass | ≈m | 0.35 kg0.772 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 fillet radius | ra max | 1 mm0.039 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.1 mm0.043 in |
| Shoulder diameter outer ring | D1 | 59.62 mm2.347 in |
| Caliber diameter outer ring | D2 | 61.58 mm2.424 in |
| Shoulder diameter inner ring | d1 | 44.6 mm1.756 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -20 °C-4 °F |
| Operating temperature max. | Tmax | 100 °C212 °F |
Calculation factors1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor | f0 | 13 |
Capabilities & suitability6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Lifetimelubricationfreedomfrommaintenance | Yes | |
| Suitable for grease lubrication | Yes | |
| Sealedonbothsides | Yes |
Manufacturer Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 355524 | |
| Brand | FAG | |
| Base Type | 6306 | |
| X Life Marking | n.r. | |
| SAP material number | 0167231040030 | |
| Base product | 2305080101 | |
| Bearing X designation | 6306-2RSR-C3 | |
| Mounting Manager ID | 6306-2RSR-C3 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Deep groove ball bearing 63..-2RSR, single row, seals, steel sheet metal cage | |
| Short Description | Deep groove ball bearing |
Technical Data17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 30 mm | |
| Outside Diameter (D) | 72 mm | |
| Width (B) | 19 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 30,500 N | |
| Basic Static Load Rating, Radial (C0R) | 16,200 N | |
| Operating Temperature Min. (Tmin) | -20 °C | |
| Limiting Speed (Ng) | 6,000 1/min | |
| Operating Temperature Max. (Tmax) | 100 °C | |
| Calculation Factor (F0) | 13 | |
| Fatigue Load Limit, Radial (Cur) | 1,050 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 37 mm | |
| Shoulder Diameter Inner Ring (D1) | 44.6 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 65 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | |
| Maximum Fillet Radius (Ra Max) | 1 mm | |
| Shoulder Diameter Outer Ring (D1) | 59.62 mm | |
| Caliber Diameter Outer Ring (D1) | 61.58 mm |