Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | HC6304 | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 15 mm |
| Basic dynamic load rating | C | 19.7 kN |
| Basic static load rating | C0 | 10 kN |
| Fatigue load limit | Pu | 0.395 kN |
| Reference speed | nref | 15600 r/min |
| Limiting speed | nG | 23800 r/min |
| Mass | ≈m | 0.146 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Internal clearance | C3 (Group 3) — Internal clearance larger than CN | |
| Sealing | Without — Not sealed | |
| Cage | JN — Steel sheet metal | |
| Lubricant | Without — Bearing not greased | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °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 characteristics8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Material Bearing | HC | Hybrid bearing, rolling elements ceramic, bearing rings made of steel |
| Type of Seal | Without | Not sealed |
| Cage | JN | Steel sheet metal |
| Tolerance class | PN | Normal (ISO 492:2023) |
| Dimensional / heat stabilization | SN | Rings dimensional stabilized up to 120° |
| Lubricant | Without | Bearing not greased |
| Radial internal clearance | C3 (Group 3) | Internal clearance larger than CN |
| Bore type | Z | Cylindrical |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 20 mm0.787 in |
| Outside diameter | D | 52 mm2.047 in |
| Width | B | 15 mm0.591 in |
| Basic dynamic load rating, radial | Cr | 19,700 N4,428.957 lbf |
| Basic static load rating, radial | C0r | 10,000 N2,248.201 lbf |
| Fatigue load limit, radial | Cur | 395 N88.804 lbf |
| Limiting speed | nG | 23,800 1/min |
| Reference speed | nϑr | 15,600 1/min |
| Mass | ≈m | 0.146 kg0.322 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 27 mm1.063 in |
| Maximum diameter of housing shoulder | Da max | 45 mm1.772 in |
| Maximum fillet radius | ra max | 1.1 mm0.043 in |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.1 mm0.043 in |
| Shoulder diameter outer ring | D1 | 41.95 mm1.652 in |
| Caliber diameter outer ring | D2 | 44.4 mm1.748 in |
| Shoulder diameter inner ring | d1 | 30.3 mm1.193 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Calculation factors1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor | f0 | 15.7 |
Capabilities & suitability7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Currentinsulated | Yes |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1282526 | |
| Brand | FAG | |
| Base Type | HC6304 | |
| SAP material number | 0861635660030 | |
| Base product | 2305080101 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Deep groove ball bearing HC63, Hybrid bearing, single row, steel sheet metal cage | |
| Short Description | Deep groove ball bearing |
Technical Data18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 20 mm | |
| Outside Diameter (D) | 52 mm | |
| Width (B) | 15 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 19,700 N | |
| Basic Static Load Rating, Radial (C0R) | 10,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 23,800 1/min | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Reference Speed (Nϑr) | 15,600 1/min | |
| Calculation Factor (F0) | 15.7 | |
| Fatigue Load Limit, Radial (Cur) | 395 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 27 mm | |
| Shoulder Diameter Inner Ring (D1) | 30.3 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 45 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | |
| Maximum Fillet Radius (Ra Max) | 1.1 mm | |
| Shoulder Diameter Outer Ring (D1) | 41.95 mm | |
| Caliber Diameter Outer Ring (D1) | 44.4 mm |
