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NTN PK42.3X51.9X21.5X is a machined ring needle roller bearing with a 42.3 mm bore, 51.9 mm outer diameter, and 21.5 mm width. This open design has no seals or shields. It is suitable for applications requiring high radial load capacity in a compact cross-section.
MODEL PK42.3X51.9X21.5X
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$44.92 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable: See conditions
Height
2.047
I.D.
42.395 mm
Length
2.047
O.D.
51.948 mm
Width
0.8661
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.
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