Industry Standard Grade 100 Hardened Steel Ball Bearings: High Quality Graded Hardened Chrome Steel Ball bearings made from Chromium AISI 52100 steel. Hardened to 60-67 Rockwell Scale equivalent to 700-900 HV (Vickers Scale) and are hardened all the way through the ball. These are the same hardened steel balls used to manufacture bearing assemblies and have a high duty and life cycle. Manufactured in compliance to the following international standards: AISI52100 / EN31 / BS534A99 / W1.3505 / BS535A99 / UNI100C6 / AFN100C6 / DIN100C6 / JIS G4805 SUJ2
Brand / Quality: Simply Ital Ball - High Quality Ball Diameter: 7.94mm = 5/16 inch
AISI 52100 Chrome Steel
Min Crush Load
Attracted to Magnets
Avg Qty / Litre
Chrome steel balls are made from AISI 52100 Chrome steel.
Uniformly hardened and tempered all the way through the ball to achieve maximum strength and quality.
Ball hardness is controlled within the 60-67 HRC range as measured on parallel flat surfaces.
Ball grades are defined numerically 3 - 2000 (3 being highest quality, 2000 is the lowest)
I have the bearings I ordered thank-you. I was impressed by how quickly they arrived. From placing the order at 4pm and arriving by the next morning.
Martyn Weston, United kingdom 15/10/2015
Old, obsolete bearings can be a problem to renew/replace.
1926 BSA cup and cones were renovated with replacement balls from Simply Bearings and the motorcycle may now last another 90 years.
Slightly more expensive than 1926 prices but very prompt delivery at modern prices.
Makhi Titus, United Kingdom 25/09/2015
Very good balls. I can carry on with my art work.
Richard Rawlins, United kingdom 06/08/2015
EXCELLENT QUALITY AT A REASONABLE PRICE FOR THE QUANTITY REQUIRED (20) AND DELIVERED ON TIME.