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 | 6304 | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 15 mm |
| Basic dynamic load rating | C | 18.5 kN |
| Basic static load rating | C0 | 7.8 kN |
| Fatigue load limit | Pu | 0.54 kN |
| Limiting speed | nG | 14000 r/min |
| Mass | ≈m | 0.145 kg |
| Precision class | P6 — Class 6 (ISO 492:2023) | |
| Internal clearance | CN (Group N) — Normal internal clearance | |
| Sealing | HRS — Contact seal on one side | |
| Cage | JN — Steel sheet metal | |
| Lubricant | Without — Bearing not greased | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 100 °C |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 3Derived from ISO P6; not a direct ABEC marking | |
| Mapping basis | ISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value. |
Product characteristics9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Version code | >V | Not marked on bearing |
| Changed internal design | C | GenerationC |
| Type of Seal | HRS | Contact seal on one side |
| Cage | JN | Steel sheet metal |
| Tolerance class | P6 | Class 6 (ISO 492:2023) |
| Dimensional / heat stabilization | SN | Rings dimensional stabilized up to 120° |
| Lubricant | Without | Bearing not greased |
| Radial internal clearance | CN (Group N) | Normal internal clearance |
| Bore type | Z | Cylindrical |
Main Dimensions & Performance Data8 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 | 18,500 N4,159.173 lbf |
| Basic static load rating, radial | C0r | 7,800 N1,753.597 lbf |
| Fatigue load limit, radial | Cur | 540 N121.403 lbf |
| Limiting speed | nG | 14,000 1/min |
| Mass | ≈m | 0.145 kg0.32 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 mm0.039 in |
Dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 1.1 mm0.043 in |
| Shoulder diameter outer ring | D1 | 42.17 mm1.66 in |
| Caliber diameter outer ring | D2 | 44.12 mm1.737 in |
| Shoulder diameter inner ring | d1 | 28.83 mm1.135 in |
| Caliber diameter inner ring | d2 | 27.67 mm1.089 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 100 °C212 °F |
Calculation factors1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor | f0 | 12.3 |
Manufacturer Identity6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 1684077 | |
| Brand | FAG | |
| Base Type | 6304 | |
| X Life Marking | C | |
| SAP material number | 0952209250000 | |
| Base product | 2305080101 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Deep groove ball bearing 63..-C-HRS, single row, Generation C, seal, 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) | 18,500 N | |
| Basic Static Load Rating, Radial (C0R) | 7,800 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 14,000 1/min | |
| Operating Temperature Max. (Tmax) | 100 °C | |
| Calculation Factor (F0) | 12.3 | |
| Fatigue Load Limit, Radial (Cur) | 540 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 27 mm | |
| Shoulder Diameter Inner Ring (D1) | 28.83 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 45 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.1 mm | |
| Caliber Diameter Inner Ring (D1) | 27.67 mm | |
| Maximum Fillet Radius (Ra Max) | 1 mm | |
| Shoulder Diameter Outer Ring (D1) | 42.17 mm | |
| Caliber Diameter Outer Ring (D1) | 44.12 mm |