China	Russia	USA	U.K	Japan	France	Germany
GB	§¤§°§³§´	ASTM	BS	JIS	NF	DIN
20	20	1020	050A20	S20C	XC18	C22,CK22
40	40	1040	080A40	S40C	XC38H1	¡¡
45	45	1045	080M46	S45C	XC45	C45,CK45
GCr15	§ºX15	E52100	534A99	SUJ2	100C6	100Cr6
9Cr18	¡¡	440	¡¡	SUS440	Z105CrMo17	X90CrMoV18
0Cr19Ni9	08X18H10	304	304S15	SUS304	Z6CN18.09	X5CrNi189
00Cr19Ni11	03X18H11	304L	304S12	SUS304L	Z2CN18.09	X2CrNi189
2Cr13	20X13	420	420S37	SUS420J1	Z20C13	X20Cr13
0Cr17Ni12Mo2	08X17H13M2T	316	316S16	SUS316	Z6CND17.12	X5CrNiMo1810

Optional choice:
Rings: AISI 316 stainless steel Available for all types
Retainer: Crown type cage, plastic, phenolic, available;
Balls: Si3N4 balls, ceramic balls for high precision grade ABEC-7 bearings available.)

440C stainless steel is magnetized steel.

Precision Specification
Dimension tolerance and rotational precision grade over ISO Normal Class or ABMA(used to be AFBMA)ABEC-1 is guaranteed. ISO CLASS 6 or ABEC-3 and ISO CLASS 5 or ABEC-5 are also available upon request.

Lubrication
Heat-resistant grease is prepacked in WOLEE's shielded and sealed type stainless steel ball bearings. Special high temperature greases such as silicon grease, fluorinated grease, etc. are available for special applications upon request.

Company brand	Product	Base oil	Usage range Tem.	Characteristics
KYODO YUSHI	Multemp SRL	Polyol ester+ Diester	-50~+150	Excellent noise suppressant    property and extended    performance life
	Multemp PS	Diester+Refined mineral oil	-50~+130	Excellent low-temperature    performance, has outstanding    noise suppressant property
	Multemp SM-B	Synthetic hydrocarbon	-50~+200	Long service life under high    temperature, Excellent low-    temperature performance, has high-    speed operation, low noise property
	Multemp ET-K	Synthetic ether +Polyol ester	-40~+200	Has more extended life under     a high operating temperature     condition.r
EXXON	Polyrex EM	Mineral grease	-40~+180	Long life and high temperature
	Beacon325	Synthetic grease	-54~+150	General purpose grease
	Andok C	Channeling petro- leum grease	-27~+120	Smooth running, long life with     minimum migration
MOBILE	Mobil 28 (MIL-G-81322)	Synthetic hydr- ocarbon	-54~+177	Wide temperature range, good    low temperature torque.
	Mobil HP	Lithium complex	-30~+110	Vibration, moderate speed and good corrosion resistance
CHEVRON	SRI-2	Mineral grease	-30~+180	High temperature range, good     water resistance.
SHELL	Alvania 2	Mineral grease	-35~+120	Long life and high temperature.
	RLQ #2	Mineral grease	-50~+150	Low noise, high speed and    high temperature.
	RLS #2	Food Grease	-30~+120	Food grade grease ,good water resistance,long life grease
DUPONT	Krytox 240AC	Fluorinated grease	-35~+290	High temperature stability  with good lubricity properties
KLUBER	ASONIC	Synthetic hydr- ocarbon	-50~+140	Low noise,    long life and low torque
JINZHI	HANGU 2#	Mineral grease	-20~+120	Low noise
	HTHS	Mineral grease	-40~+180	High speed ,low temperature,     low torque and low noise

Enclosure Types
STANDARD SEAL

WOLEE  Bearings with suffix of 2RS are equipped with this type of seal. The seal is Nitrile Butadiene Rubber(NBR) molded round a flat metal ring which imparts flexibility and strength to the construction and helps to control sealing performance. The seal is compressed into a groove in the outer ring to ensure a tight joint without creating outer ring distortion.


STANDARD SHIELD
WOLEE  Bearings with suffix of ZZ are equipped with this type of shield, which is a formed metal disc, and is crimped into a shield groove in the outer ring, keeping a close running clearance with the inner ring. Shields help to retain grease lubricant and prevent the entry of chips or large particles into the bearing.