Plastic bearing PP 638 Glass Ball 8X28X9 mm

SKU: 42082809380

Plastic bearings are commonly used in application where it requires exposure to water, chemical, or electrical (insulated) environment. This type of bearing does not require any oil lubrication as it self-lubricates. This type of bearing is also low noise and has longer life span.

This 8 x 28 x 9 mm (PP 638) bearing is a plastic bearing with Glass ball . The PP 638 inner diameter is 8 mm, the PP 638 outer diameter is 28 mm, the PP 638 width is 9 mm.


Here are some characteristics of PP and POM plastic bearing that might give you an idea of which one is more suitable for your application.

Polyoxymethylene (POM)
- higher strength, greater hardness
- higher thermal stability
- wear resistance
- suitable to be in contact with food type applications
- resistant to weak acid and weak oxidant
- anti-rust

Polypropylene (PP)
- good corrosion resistance
- high mechanical strength
- high wear resistance
- strong anti-adhesion ability
- great electrical insulation
- good resistance to high radiation
- anti-rust

Example applications:
Mechanical, electrical, hospital equipment, food machinery, furniture and building materials

This bearing is Open, it does not have seal on neither side.

Specs:

Bearing Model: PP 638
Also Known As: PP 638 with glass balls, 638-2RS Polypropylene bearing
Inner Diameter (d): 8 mm
Outer Diameter (D): 28 mm
Width (B): 9 mm
Inner Diameter (d): 0.3150 inch
Outer Diameter (D): 1.1024 inch
Width (B): 0.3543 inch
Material: Polypropylene Plastic (PP)
Ball Material: Glass
Cage Material: Polypropylene Plastic
Closures: Open both sides

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