8mm Diameter Grade 100 Hardened AISI 420 Stainless Steel Ball Bearings 
Precision Manufactured Ball Bearing Replacement Parts


Item Description - Stainless AISI 420 
roundness - 1.5 µm 
Ball Diameter - 8mm
Precision Instruments
Calibration and examination balls
Train sets & Models
University & College Experiments
Art & Craft Projects / Jewellery

Industry Standard Grade 100 420 Stainless Ball Bearings: High Quality Graded 420 Stainless Steel Ball bearings made from
 420 Stainless Steel with a hardness of 52 -55 HRC Rockwell Scale, the hardness is all the way through the ball.
 These are the same stainless 420 steel balls used to manufacture bearing assemblies and have a high duty and life cycle.

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All items will be posted by royal mail first class unless stated otherwise.