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Koyo 6209 2RD is a 62 series single-row deep groove ball bearing with a 45 mm bore, 85 mm OD, and straight bore. This light series bearing is designed for general industrial rotating equipment such as electric motors, pumps, and fans.
MODEL 6209 2RD
$48.14 Each
Prices are subject to change
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Bore
19
I.D.
45 mm
O.D.
85 mm
| Bearing No. | 6209 2RD | |
| Boundary dimensions(mm) | d | 45 |
| D | 85 | |
| B | 19 | |
| r(min) | 1.1 | |
| Basic load ratings(kN) | Cr | 40.9 |
| C0r | 20.3 | |
| Fatigue load limit(kN) | Cu | 1.40 |
| factor | f0 | 14.0 |
| Limiting speeds(min-1) | Grease lub. | 7700 |
| Mounting dimensions(mm) | da(min) | 51.5 |
| da(max) | 53.5 | |
| Da(max) | 78.5 | |
| ra(max) | 1 | |
| (Refer.)Mass(Open type)(kg) | 0.407 |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
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