Koyo/JTEKT 6304C3 Deep Groove Ball Bearing Open Type (C3) 20 x 52 x 15mm
Available
Koyo/JTEKT 6304C3. Open: open bearing for low-friction high-speed duty. Koyo precision chrome steel races and balls. C3 clearance: extra clearance for thermal expansion. Deep Groove Ball Bearing Open Type (C3) - 6300 Series is a service-grade replacement for industrial and automotive drive shafts.
Bearing type: Deep groove ball bearing. Sealing: Open. Clearance: C3 (extra clearance). Material: Chrome bearing steel. Refer to title for dimensions.
Available Sizes
17 sizes available — select the exact size you need from the dropdown above. Key figures for each:
| Bore Diameter x Outer Diameter x Width (mm) | Basic Load Rating (kN) Cr | Basic Load Rating (kN) C0r | Limiting Speed (min-1) Oil lub. (Z) |
|---|---|---|---|
| 20 x 52 x 15 | 19.9 | 7.85 | 17000 |
| 30 x 72 x 19 | 33.3 | 15 | 12000 |
| 35 x 80 x 21 | 41.7 | 19.3 | 10000 |
| 40 x 90 x 23 | 50.9 | 24 | 9200 |
| 45 x 100 x 25 | 61.1 | 29.5 | 8100 |
| 50 x 110 x 27 | 77.5 | 38.3 | 7300 |
| 55 x 120 x 29 | 89.5 | 45 | 6700 |
| 60 x 130 x 31 | 102 | 52.2 | 6200 |
| 65 x 140 x 33 | 116 | 59.9 | 5800 |
| 70 x 150 x 35 | 130 | 68.2 | 5400 |
| 75 x 160 x 37 | 142 | 77.2 | 5000 |
| 80 x 170 x 39 | 154 | 86.7 | 4700 |
| 85 x 180 x 41 | 166 | 96.8 | 4400 |
| 90 x 190 x 43 | 4200 | ||
| This size's load rating/fatigue-limit figures could not be independently confirmed against Koyo/JTEKT's own current site (no live page exists for this exact model) -- worth a direct supplier check before relying on this figure. | |||
| 95 x 200 x 45 | 191 | 119 | 4000 |
| 100 x 215 x 47 | 216 | 141 | 3600 |
| 110 x 240 x 50 | 257 | 180 | 3200 |
Where This Is Used
- Automotive: Transmissions, electrical devices, truck, and trailer equipment.
- Off-Highway Vehicles: Construction equipment, agricultural equipment, railroad rolling equipment.
- Electrical Equipment: Standard motors, electric appliances for domestic use.
- Other: Measuring instruments, medical instruments, and miscellaneous industrial equipment.
Features
- Features Deep Groove Radial Bearing.
- Type: Open Type, Shielded/ sealed type, With locating snap ring, Maximum type, and Double-row.
- The most popular rolling bearing type used in a wide variety of industries and applications.
- The inner and outer rings have deep uninterrupted grooves.
- They can support radial loading and a certain degree of axial loading in either direction.
- High-speed capability.
- The Maximum style not to be used when axial loading or high speed is involved.
- Sealed and shielded types are filled with an appropriate volume of grease.
- Bearings with a locating snap ring aid axial positioning and eliminate the need for housing shoulder.
- Cages can be a pressed steel, machined copper alloy, molded polyamide, synthetic resin, pressed stainless sheet steel.
Full engineering specifications (all 14 fields, 17 sizes)
| Bearing Width B (mm) | Bore Diameter x Outer Diameter x Width (mm) | Limiting Speed (min-1) Oil lub. (Z) | Basic Load Rating (kN) Cr | Fatigue Load Limit (kN) Cu | Outside Diameter D (mm) | Basic Load Rating (kN) C0r | Bore Diameter d (mm) | Mounting Dimension (mm) Da Max | Mounting Dimension (mm) Ra Max | Factor F 0 | Limiting Speed (min-1) Grease lub. (RU, 2RU) | Mounting Dimension (mm) Da Min | Boundary Dimension (mm) r min. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 20 x 52 x 15 | 17000 | 19.9 | 0.66 | 52 | 7.85 | 20 | 45.5 | 1 | 12.3 | 14000 | 26.5 | 1.1 |
| 19 | 30 x 72 x 19 | 12000 | 33.3 | 1.15 | 72 | 15 | 30 | 65.5 | 1 | 13.3 | 9600 | 36.5 | 1.1 |
| 21 | 35 x 80 x 21 | 10000 | 41.7 | 1.45 | 80 | 19.3 | 35 | 72 | 1.5 | 13.2 | 8500 | 43 | 1.5 |
| 23 | 40 x 90 x 23 | 9200 | 50.9 | 1.85 | 90 | 24 | 40 | 82 | 1.5 | 13.2 | 7700 | 48 | 1.5 |
| 25 | 45 x 100 x 25 | 8100 | 61.1 | 2.25 | 100 | 29.5 | 45 | 92 | 1.5 | 13.3 | 6800 | 53 | 1.5 |
| 27 | 50 x 110 x 27 | 7300 | 77.5 | 2.9 | 110 | 38.3 | 50 | 101 | 2 | 13.2 | 6100 | 59 | 2 |
| 29 | 55 x 120 x 29 | 6700 | 89.5 | 3.45 | 120 | 45 | 55 | 111 | 2 | 13.2 | 5600 | 64 | 2 |
| 31 | 60 x 130 x 31 | 6200 | 102 | 3.95 | 130 | 52.2 | 60 | 119 | 2 | 13.2 | 5200 | 71 | 2.1 |
| 33 | 65 x 140 x 33 | 5800 | 116 | 4.5 | 140 | 59.9 | 65 | 129 | 2 | 4.5 | 4800 | 76 | 2.1 |
| 35 | 70 x 150 x 35 | 5400 | 130 | 4.95 | 150 | 68.2 | 70 | 139 | 2 | 13.2 | 4500 | 81 | 2.1 |
| 37 | 75 x 160 x 37 | 5000 | 142 | 5.4 | 160 | 77.2 | 75 | 149 | 2 | 13.2 | 4200 | 86 | 2.1 |
| 39 | 80 x 170 x 39 | 4700 | 154 | 5.85 | 170 | 86.7 | 80 | 159 | 2 | 13.3 | 3900 | 91 | 2.1 |
| 41 | 85 x 180 x 41 | 4400 | 166 | 6.35 | 180 | 96.8 | 85 | 167 | 2.5 | 13.3 | 3700 | 98 | 3 |
| 43 | 90 x 190 x 43 | 4200 | 190 | 90 | 177 | 2.5 | 3500 | 103 | 3 | ||||
| This size's load rating/fatigue-limit figures could not be independently confirmed against Koyo/JTEKT's own current site (no live page exists for this exact model) -- worth a direct supplier check before relying on this figure. | |||||||||||||
| 45 | 95 x 200 x 45 | 4000 | 191 | 9.45 | 200 | 119 | 95 | 187 | 2.5 | 13.3 | 3300 | 108 | 3 |
| 47 | 100 x 215 x 47 | 3600 | 216 | 10.9 | 215 | 141 | 100 | 202 | 2.5 | 10.9 | 3000 | 113 | 3 |
| 50 | 110 x 240 x 50 | 3200 | 257 | 13.3 | 240 | 180 | 110 | 227 | 2.5 | 13.2 | 2700 | 123 | 3 |
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20 x 52 x 15mm bearing
Model Number: 6304C3/KOYO
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30 x 72 x 19mm bearing
Model Number: 6306C3/KOYO
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35 x 80 x 21mm bearing
Model Number: 6307C3/KOYO
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40 x 90 x 23mm bearing
Model Number: 6308C3/KOYO
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45 x 100 x 25mm bearing
Model Number: 6309C3/KOYO
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50 x 110 x 27mm bearing
Model Number: 6310C3/KOYO
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55 x 120 x 29mm bearing
Model Number: 6311C3/KOYO
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60 x 130 x 31mm bearing
Model Number: 6312C3/KOYO
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65 x 140 x 33mm bearing
Model Number: 6313C3/KOYO
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70 x 150 x 35mm bearing
Model Number: 6314C3/KOYO
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75 x 160 x 37mm bearing
Model Number: 6315C3/KOYO
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80 x 170 x 39mm bearing
Model Number: 6316C3/KOYO
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85 x 180 x 41mm bearing
Model Number: 6317C3/KOYO
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90 x 190 x 43mm bearing
Model Number: 6318C3/KOYO
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95 x 200 x 45mm bearing
Model Number: 6319C3/KOYO
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100 x 215 x 47mm bearing
Model Number: 6320C3/KOYO
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110 x 240 x 50mm bearing
Model Number: 6322C3/KOYO

