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Grade5 ruby or sapphire ball for bearings
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Brand: SJLLASER OEM ODM
Tolerance in Diameter:： +/-0.001mm
Roundness： <0.4um
Out standing surface finish： S/D:20/10（Ra25nm）
Price: Negotiable
Min.Order: 300 ball lens
Supply 1000000000 ball lens
Delivery: Shipment within 15 days since the date of payment
Address: China
Valid until: Never Expire
Updated on: 2021-12-03 08:55
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Ruby ball ,sapphire bsll is one of corundum gemstones. it is  mainly characterized by wear resistance, high hardness, corrosion resistance and small friction coefficient. it is an idea material for precision bearing.
Tolerance in Diameter: +/-0.001mm Roundness<0.4um Surface finish：S/D:20/10（Ra25nm）

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