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Rollway 51204 20 mm Bore Size, 40 mm Outside Diameter, Thrust Ball Bearing, 52100 Bearing Steel, Normal Radial Clearance 20 mm Bore Size, 40 mm Outside Diameter, Thrust Ball Bearing, 52100 Bearing Steel, Normal Radial Clearance
MODEL 51204
This product has a minimum order quantity of (100 minimum) This is the minimum order quantity available when purchasing this product.
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$19.27 Each
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Returnable:No
Bore Size (mm)
20
Bore Type
Straight
Cage Material
Steel
Duplexing
No
Dynamic Load Rating (kN)
22.2
Dynamic Load Rating (lb)
4991
Full Complement/Caged
Caged
Height
1.57
Length
1.57
Material
52100 Bearing Steel
Misalignment
No
Number of Rows
1
O.D. (mm)
40
Platform
Rollway Thrust Ball Bearings
Radial Clearance
Normal
Rolling Element
Ball
Seal Type
Unsealed
Sealed
None
Speed (Max) Grease (rpm)
3800
Speed (Max) Oil (rpm)
5300
Static Load Rating (kN)
37.5
Static Load Rating (lb)
8430
Thrust Direction
Single
Width
0.55
| Product Type | Single Row |
|---|---|
| Bore (mm) | 20 |
| Cage Type | Steel |
| Weight Unit of Measure: | EA |
|---|---|
| Weight: | 0.18 |
| Sale Qty Multiple: | 1 |
| Packaged Length: | 2.17 |
| Packaged Width: | 2.17 |
| Packaged Height: | 0.67 |
| No. Links/Ft. : | 0 |
| Product Type: | Single Row |
| Bore (mm): | 20 |
| Cage Type: | Steel |
Dimensions
| Part No | 51204 |
|---|---|
| Description | 51204 |
| d | 20mm (0.7874 inch) |
| D | 40mm (1.5748 inch) |
| H | 14mm (0.5512 inch) |
| Basic Dynamic Rating Cr | 22.2kN (4, 991 pounds) |
| Basic Static Rating Cor | 37.5kN (8, 430 pounds) |
| D1 | 22mm (0.8661 inch) |
| d1 | 40mm (1.5748 inch) |
| r1, 2 | 0.6mm (0.0236 inch) |
| Limiting Speed Grease (RPM) | 3800 |
| Limiting Speed Oil (RPM) | 5300 |
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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