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1/4 Inch 6.35mm Top Quality Steel 100 Grade Ball Bearings - Pack of 100

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Industry Standard Grade 100 316 Stainless Ball Bearings

High quality graded 316 stainless steel ball bearings made from AISI 316 Stainless Steel with a hardness of 25 - 39 Rockwell Scale equivalent to 140 - 160HB (Brinnel Scale) the hardness is all the way through the ball. These are the same stainless 316 steel balls used to manufacture bearing assemblies and have a high duty and life cycle.

Hardened austentic stainless steel with good corrosion resistance to sea water, dilute nitric, sulphuric and acetic acids, photo chemicals, inks, bleaches, dyes etc.

- Ball diameter: 6.35mm = 1/4 Inch
- Material: 316 Stainless Steel
- Min Crush Load: 2280kg
- Hardness: 25-39 HRC
- Hardness Depth: Through Hardened
- Corrosion Resistance: Excellent
- Note: Can be Drilled
- Weight Each: 1.05g
- Attracted to Magnets: No
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Product Reviews (1)
Overall Product Rating 4 / 5
This Is A Test Please Ignore
15 Sep 2016
4 / 5
I recommend this product
this is test placed 15/09 to confirm our changes are working and not causing any issues
Questions & Answers (2)
This Is A Test Please Ignore
15 Sep 2016
this is a test on 15/09 to confirm our changes are working, please ignore this test
What Are Advantages Of The Different Bearing Materials?
22 Jan 2015
I see you have stainless, steel, and chrome steel bearings. What are the advantages of each (presumably corrosion, but what about hardness?) and which would you recommend for Shimano cup and cone bearings (e.g. my old XT hubs, or my new Ultegra hubs)?
SJS Customer Service:

The Chrome steel bearings are actually a harder grade than the stainless bearings. When it comes to bearings the best thing to do is look at the grade, the lower the number the more round the bearings are. Shimano normally use 25 grade bearings for the higher end hubs and 50 grade for the lower end ones. I would not recommend spending more on higher quality bearings though as the cones and cups on most Shimano hubs aren't smooth enough to make a full difference, they will make smooth bearings rough just a quick.