GCR15 INCH SERIES BEARINGS R8

Product Number	Bearing Type	Bore Dia (d)	Outer Dia (D)	Width (B)	Dynamic Load Rating (Cr) (Newtons)	Static Load Rating (Cor) (Newtons)
R8	Open	0.5	1.125	0.25	1149	511
R8-2RS	Sealed		1.125	0.3125	1149	511
R8ZZ	Shielded		1.125	0.3125	1149	511

Material:
RINGS & BALLS vacuum degassed, high carbon chromium bearing steel GCr15 is the standard material for precision bearing rings and balls. The material has uniform specification as AISL 52100(America)DIN100 Cr6(German),JISSUJ2(Japan)

	Chemical Composition(%)
STEEL NO	C	Si	Mn	P	S	Cr
GCr15	0.95-1.05	0.15-0.35	0.25-0.45	0.025	0.025	1.40-1.65

Manufacturer	Brand name	Basic type grease	Operation temp.c	Use
Exxon	Beacon 325	synthetic grease	-55~120	General purpose grease
Mobil28	(Mil-G-81332)	Synthetic hydrocarbon	-55~180	Wide temperature range,good low temperature torque
Chevron		Mineral grease	-30~180	High temperature range with good water resistance
Shell	Alvania2	Mineral grease	-35~120	Long life and wide application
DuPont	Krytox 240AC(mil-G-27617)	Fluorinated grease	-35~290	High temperature stablility with good lubricity properties
Shell	Dolium R	Petroleum grease	-40~150	Good corrosion resistance and water resistance
KYODO	SRL	Synthetic grease	-40~150	Low noise,low torque and special case
Mobil	HP	Lithium complex	-30~110	Vibration,moderate speeds and good corrosion resistance
Tianjin Hangu	Motor No.2	Mineral grease	-30~110	wide application,general purpose