Loose Ball Bearings | McMaster-Carr

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System of Measurement

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Material

Borosilicate Glass

Stainless Steel

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Hardness Rating

Hardness

Durometer 50D to Durometer 65D

Knoop 420 HK 0.1

Rockwell M80 to Rockwell M100

Rockwell M89 to Rockwell M96

Rockwell R40 to Rockwell R80

Rockwell R108 to Rockwell R121

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Specifications Met

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Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

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Chemical Resistant

Corrosion Resistant

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Moisture Resistant

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544 Products

Raw Materials

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Plastic

A lightweight alternative to metal and glass

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

Nickel

An upgrade from stainless steel to withstand harsh chemicals and acids—all with material certificates for traceability

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)