0.25mm Diameter Grade 1000 AISI 304 Stainless Steel Ball Bearings Simply Bearings Ltd

General Purpose Grade 1000 304 Stainless Ball Bearings: High Quality Graded 304 Stainless Steel Ball bearings made from AISI 304 Stainless Steel with a hardness of 25 - 39 Rockwell Scale equivalent to 140 - 160 HB (Brinnel Scale) the hardness is all the way through the ball. These are the same stainless 304 steel balls used to manufacture bearing assemblies and have a high duty and life cycle.
Un-hardened austenitic stainless steel with good corrosion resistance to sea water, dilute nitric, sulphuric and acetic acids, photo chemicals, inks, bleaches, dyes etc. Can be machined / drilled.
Manufactured in compliance to the following international standards: AISI 304 / AFN Z6CND17-11 / DIN X6 Cr Ni 18.09 / JIS SUS 304 / Wks 1.4301

Material	=	304 Stainless Steel
Min crush load	=	7kg
Hardness	=	25-39 HRC
Hardness Depth	=	Unhardened
Corrosion Resistance	=	Excellent
Note	=	Can be Drilled
Approx Weight Each	=	0.0000645982494g
Attracted to Magnets	=	No

GRADES
Grade	Diameter Tolerance Per Ball		Sphericity		Diameter Tolerance per Unit Container		Diameter Tolerance		Max Surface Roughness
-	Inch	µ	Inch	µ	Inch	µ	Inch	µ	Inch	µ
3	0.000003	0.076	0.000003	0.076	0.000005	0.127	±.00003	±0.076	0.5	0.013
5	0.000005	0.127	0.000005	0.127	0.000001	0.25	±.000005	±0.127	0.8	0.02
10	0.00001	0.25	0.00001	0.25	0.00002	0.51	±.0001	±2.5	1	0.025
15	0.000015	0.38	0.000015	0.38	0.00003	0.76	±.0001	±2.5	1.2	0.03
25	0.000025	0.63	0.000025	0.63	0.00005	1.27	±.0001	±2.5	1.5	0.038
50	0.00005	1.27	0.00005	1.27	0.0001	2.5	±.0002	±5	3	0.075
100	0.0001	2.5	0.0001	2.5	0.0002	5	±.0005	±5	5	0.125
200	0.0002	5	0.0002	5	0.0004	10	±.0010	±10	8	0.2
300	0.0003	7.5	0.0003	7.5	0.0006	15	±.0015	±37.5	Not applicable	Not applicable
500	0.0005	12.5	0.0005	12.5	0.001	25	±.002	±50	Not applicable	Not applicable
1000	0.001	25	0.001	25	0.002	50	±.005	±125	Not applicable	Not applicable
2000	0.002	50	0.002	50	0.004	100	±.005	±125	Not applicable	Not applicable

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0.25mm Diameter Grade 1000 AISI 304 Stainless Steel Ball Bearings

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