Koyo 6208C3 Deep Groove Ball Bearing, Open, 40 x 80 x 18 mm
Available
This is the Koyo Deep Groove Ball Bearing, Open, C3 Clearance, 6200 Series.
This Koyo deep groove ball bearing (open, 6200 series) is built on the most popular rolling bearing type. Deep, uninterrupted raceway grooves in the inner and outer rings carry radial load and a certain degree of axial load in either direction, at high speed. It is supplied open, with no shields or seals, so lubrication and sealing come from the housing and the application.
The range has 17 sizes, with bores from 17 to 120 mm, C3 radial internal clearance and boundary dimensions to JIS B 1512. Koyo bearings are made by JTEKT Corporation.
Where this product is used
- Automotive: transmissions, electrical devices, and truck and trailer equipment
- Off-highway: construction equipment, agricultural equipment and railway rolling equipment
- Electrical equipment: standard motors and domestic electric appliances
- Measuring and medical instruments
- General industrial equipment
Features
- Deep, uninterrupted raceway grooves carry radial load and a certain degree of axial load in either direction
- Open construction, with lubrication and sealing provided by your housing design
- C3 radial internal clearance, larger than the normal clearance
- Boundary dimensions to JIS B 1512, tolerances to JIS B 1514-1
- Basic dynamic load ratings 9.55 to 155 kN and static 4.8 to 131 kN depending on size
- Standard cage by size: polyamide moulded and pressed steel
Key specifications
| Specification | Detail |
|---|---|
| Bearing type | Single row deep groove ball bearing |
| Series | 6200 |
| Sealing | Open |
| Radial internal clearance | C3 (larger than normal) |
| Bore diameter d | 17 to 120 mm |
| Outside diameter D | 40 to 215 mm |
| Width B | 12 to 40 mm |
| Basic dynamic load rating Cr | 9.55 to 155 kN |
| Basic static load rating C0r | 4.8 to 131 kN |
| Limiting speed, grease lubrication | 2,900 to 17,000 min-1 |
| Limiting speed, oil lubrication | 3,400 to 21,000 min-1 |
| Dimensions and tolerances | JIS B 1512 (boundary dimensions), JIS B 1514-1 (tolerances) |
| Radial internal clearance standard | JIS B 1520 |
| Standard cage | Polyamide moulded and pressed steel, depending on size |
| Brand | Koyo (JTEKT) |
Available sizes
Show all 17 sizes
| Designation | Bore d (mm) | Outer D (mm) | Width B (mm) | r min (mm) | Cr (kN) | C0r (kN) | Speed, grease (min-1) | Speed, oil (min-1) |
|---|---|---|---|---|---|---|---|---|
| 6203C3 | 17 | 40 | 12 | 0.6 | 9.55 | 4.8 | 17,000 | 21,000 |
| 6204C3 | 20 | 47 | 14 | 1 | 12.8 | 6.65 | 15,000 | 17,000 |
| 6205C3 | 25 | 52 | 15 | 1 | 14 | 7.85 | 13,000 | 15,000 |
| 6206C3 | 30 | 62 | 16 | 1 | 19.5 | 11.3 | 11,000 | 13,000 |
| 6208C3 | 40 | 80 | 18 | 1.1 | 29.1 | 17.8 | 8,300 | 10,000 |
| 6209C3 | 45 | 85 | 19 | 1.1 | 32.7 | 20.3 | 7,700 | 9,200 |
| 6210C3 | 50 | 90 | 20 | 1.1 | 35.1 | 23.3 | 7,100 | 8,500 |
| 6211C3 | 55 | 100 | 21 | 1.5 | 43.4 | 29.4 | 6,300 | 7,600 |
| 6212C3 | 60 | 110 | 22 | 1.5 | 52.4 | 36.2 | 5,700 | 6,900 |
| 6214C3 | 70 | 125 | 24 | 1.5 | 62.2 | 44.1 | 5,100 | 6,100 |
| 6215C3 | 75 | 130 | 25 | 1.5 | 67.4 | 48.3 | 4,800 | 5,800 |
| 6216C3 | 80 | 140 | 26 | 2 | 72.7 | 53 | 4,500 | 5,400 |
| 6217C3 | 85 | 150 | 28 | 2 | 84 | 61.9 | 4,200 | 5,000 |
| 6219C3 | 95 | 170 | 32 | 2.1 | 109 | 81.9 | 3,700 | 4,400 |
| 6220C3 | 100 | 180 | 34 | 2.1 | 122 | 93.1 | 3,500 | 4,200 |
| 6222C3 | 110 | 200 | 38 | 2.1 | 144 | 117 | 3,100 | 3,700 |
| 6224C3 | 120 | 215 | 40 | 2.1 | 155 | 131 | 2,900 | 3,400 |
Selecting the right option
Select by bore d first, then check the outside diameter D and width B in the table against your housing.
The basic dynamic load rating Cr relates to bearing life under rotating load, and the basic static load rating C0r to heavy or slow-turning duty. Compare the limiting speed for your size with the shaft speed. The speeds shown are the grease lubrication limits.
C3 is a radial internal clearance larger than normal. It is chosen where interference fits or a temperature difference between the rings take up clearance in service. Confirm the clearance class for your application.
Fitting and use
Fit the ring that has the interference fit first, and press only on that ring, never through the balls.
Lubricate to suit the application, and keep the housing clean, because there is no shield or seal on the bearing.
Where axial load is large, make the shaft shoulder and housing shoulder larger than usual.
Related products
Also available from Koyo: the 6200 contact sealed C3 range, the 6200 shielded C3 range, the 6200 open normal clearance range and the 6000 open C3 range.
Product details
| Model | 6203C3/KOYO |
|---|---|
| Designation | 6203C3 |
| Bearing type | Single row deep groove ball bearing |
| Sealing | Open |
| Radial internal clearance | C3 (larger than normal) |
| Bore diameter d (mm) | 17 |
| Outside diameter D (mm) | 40 |
| Width B (mm) | 12 |
| Chamfer dimension r min (mm) | 0.6 |
| Basic dynamic load rating Cr (kN) | 9.55 |
| Basic static load rating C0r (kN) | 4.8 |
| Factor f0 | 13.2 |
| Limiting speed, grease lubrication (min-1) | 17,000 |
| Limiting speed, oil lubrication (min-1) | 21,000 |
| Mass (kg) | 0.065 |
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Koyo Deep Groove Ball Bearing, Open, C3 Clearance, 6200 Series: 40 x 80 x 18
SKU: A0153083 | Model: 6208C3/KOYO
Koyo 6208C3 open deep groove ball bearing, 40 x 80 x 18 mm, Cr 29.1 kN, limiting speed 8,300 min-1. Order online from AIMS Industrial.
