Table 1.

Technical data of 6304zz bearings.

Manufacturer	A		B		C
Dimensions	20 mm × 52 mm × 15 mm
Ball number	7
Mass	0.146 kg		0.145 kg		0.149 kg
Dynamic load rating	16.9 kN		15.9 kN		16.8 kN
Static load rating	7.9 kN		7.9 kN		7.8 kN
Limiting speed	16,800 rpm		14,000 rpm		15,000 rpm
Material	AISI 52100 bearing steel
AISI 52100 chemical composition	Fe	C	Cr	Mn	Si	S	F
	95.5%	0.98%	1.3%	0.25%	0.15%	≤0.025%	≤0.025%