PROFILE
PRODUCTS
Ball
bearings
Insert bearings
One-way
bearings
Water pump bearings
Tapered roller bearings
Air-conditioning
bearings Cylindrical
roller bearings Clutch
release bearings Wheel
hub bearings Thrust
ball bearings Miniature
bearings Special
bearings
ENGINEERING INFORMATION Materials Clearance Tolerance Vibration CONTACT
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I. MATERIALS |
- RINGS & BALLS-Peak
Bearing uses homemade or imported vacuum
degrassed, high-carbon, chromium bearing steel as its standard material for precision
bearing rings and balls. Table 1 below shows the chemical composition.
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Table
1 HIGH
CARBON CHROMIUM BEARING STEEL £¨units:%£© |
Spec.No |
Symbol |
C |
S1 |
Mn |
P |
S |
Cr |
Ni |
Mo |
CHINA YJZ-84 |
GCr15 |
0.95-1.05 |
0.15-0.35 |
0.20-0.40 |
¡Ü0.027 |
¡Ü0.02 |
1.03-1.65 |
¡Ü0.025 |
- |
KOREA
KS D 3525 |
STB 2 |
0.95-1.10 |
0.15-0.35 |
¡Ü0.50 |
¡Ü0.025 |
¡Ü0.025 |
1.30-1.60 |
¡Ü0.25 |
¡Ü0.08 |
STB 3 |
0.95-1.10 |
0.40-0.70 |
0.9-1.15 |
¡Ü0.025 |
¡Ü0.025 |
0.90-1.20 |
¡Ü0.25 |
¡Ü0.08 |
STB 4 |
0.95-1.10 |
0.15-0.35 |
¡Ü0.50 |
¡Ü0.025 |
¡Ü0.025 |
1.30-1.60 |
¡Ü0.25 |
0.10-0.25 |
JAPAN
JIS G 4805 |
SUJ 1 |
0.95-1.10 |
0.15-0.35 |
¡Ü0.50 |
¡Ü0.025 |
¡Ü0.025 |
0.90-1.20 |
¡Ü0.25 |
¡Ü0.08 |
SUJ 2 |
0.95-1.10 |
0.15-0.35 |
¡Ü0.50 |
¡Ü0.025 |
¡Ü0.025 |
1.30-1.60 |
¡Ü0.25 |
¡Ü0.08 |
SUJ 3 |
0.95-1.10 |
0.40-0.70 |
0.90-1.15 |
¡Ü0.025 |
¡Ü0.025 |
0.90-1.20 |
¡Ü0.25 |
¡Ü0.08 |
SUJ 4 |
0.95-1.10 |
0.15-0.35 |
¡Ü0.50 |
¡Ü0.025 |
¡Ü0.025 |
1.30-1.60 |
¡Ü0.25 |
0.10-0.25 |
SUJ 5 |
0.95-1.10 |
0.40-0.70 |
0.90-1.15 |
¡Ü0.025 |
¡Ü0.025 |
0.90-1.20 |
¡Ü0.25 |
0.10-0.25 |
U.S.A.AISI
SAE J405 |
E 51100 |
0.98-1.10 |
0.20-0.35 |
0.25-0.45 |
¡Ü0.025 |
¡Ü0.025 |
0.90-1.15 |
¡Ü0.25 |
¡Ü0.08 |
E 52100 |
0.98-1.10 |
0.20-035 |
0.25-0.45 |
¡Ü0.025 |
¡Ü0.025 |
1.30-1.60 |
¡Ü0.25 |
¡Ü0.08 |
Germany
VDEH(German lron & Steel Associatiobn) |
105 Cr 2 |
1.00-1.10 |
0.15-0.35 |
0.25-0.40 |
¡Ü0.030 |
¡Ü0.025 |
0.40-0.60 |
- |
- |
105 Cr 4 |
1.00-1.10 |
0.15-0.35 |
0.25-0.40 |
¡Ü0.030 |
¡Ü0.025 |
0.90-1.15 |
- |
- |
105 Cr 6 |
0.90-1.05 |
0.15-0.35 |
0.25-0.40 |
¡Ü0.025 |
¡Ü0.020 |
1.40-1.65 |
- |
- |
100 CrMn 6 |
0.90-1.05 |
0.50-0.70 |
1.00-1.20 |
¡Ü0.025 |
¡Ü0.020 |
1.40-1.65 |
- |
- |
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- RETAINERS-Our standard bearing retainers are made from
quality cold rolled carbon steel. Nylon or brass are available upon request.
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- SEALS & SHIELDS-Our shields also employ quality carbon
steel as standard. We uses a variety of high temperature operation and compatibility with
grease. Buna-Nitrile is the standard material used.
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- LUBRICANTS-Our common greases used and their features shown
in Table 2.
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Table 2
GREASE
MFGER |
BRAND |
THICKER |
BASE OIL |
DROPPING POINT |
¡¡ |
TEMP. |
Our
CODE |
ESSO |
Beacom325 |
Lithium |
Diester |
193 |
290 |
¡¡ |
L06 |
AC205 |
Natrium |
Mineral |
¡¡ |
¡¡ |
-60~+120 |
¡¡ |
Andok B. |
Natrium |
Mineral |
260 |
280 |
-25~+120 |
L01 |
Andok C |
Natrium |
Mineral |
¡Ý260 |
205 |
-40~+120 |
L02 |
Andok 260 |
Natrium |
Mineral |
200 |
250 |
-20~+150 |
L07 |
Kyodo Yushi |
Multemp PS2 |
Lithium |
Diester |
189 |
280 |
-50~+110 |
L20 |
Multemp SRL |
Lithium |
Ester |
191 |
245 |
-40~++150 |
L21 |
Multemp SC-A |
Urea |
¡¡ |
260 |
280 |
0~+160 |
¡¡ |
Multemp ETISO |
Urea |
Mineral |
260 |
280 |
-10~+160 |
¡¡ |
KLüber |
Staburags NBU12 |
Barium |
Mineral |
220 |
270 |
-35~+150 |
¡¡ |
¡¡ |
Isoflex NBU15 |
Barium |
Diester Mineral |
220 |
280 |
-60~+130 |
¡¡ |
¡¡ |
Asonic Gly32 |
Lithium |
Sythetic |
¡¡ |
¡¡ |
-50~+140 |
¡¡ |
¡¡ |
Asonic GHY72 |
Polyhamstoff |
Ester |
¡¡ |
¡¡ |
-40~+180 |
¡¡ |
¡¡ |
Unisilikon TK44N2 |
Na-Komplex |
Silicone |
¡¡ |
¡¡ |
-60~+230 |
¡¡ |
Dow Corning |
Molykote
33M |
Lithium |
Silicone |
210 |
260 |
-70~+180 |
¡¡ |
Molykote
44M |
Lithium |
Silicone |
204 |
260 |
-40~+200 |
¡¡ |
Molykote
55M |
Lithium |
Silicone |
¡¡ |
¡¡ |
-55~+165 |
¡¡ |
Molykote
FS3451 |
Fluorotelomer |
Phlorosilicone |
¡Ý260 |
285 |
-40~+230 |
¡¡ |
Shell |
Alvania No.2 |
Lithium |
Mineral |
182 |
272 |
-25~+120 |
L15 |
Alvania No.3 |
Lithium |
Mineral |
183 |
233 |
-20~+135 |
L16 |
Alvania RS |
Lithium |
Mineral |
183 |
252 |
-25~++120 |
¡¡ |
Dolium R |
¡¡ |
Mineral |
238 |
281 |
-20~+140 |
¡¡ |
Aero shell No.5 |
Microgel |
Mineral |
¡Ý260 |
282 |
-10~+130 |
L40 |
Aero shell No.7 |
Microgel |
Diester |
¡Ý260 |
288 |
-70~+150 |
L42 |
Aero shell No.15A |
Flaorotelomer |
Silicone |
¡Ý260 |
280 |
-70~+260 |
¡¡ |
Mobil Oil |
Mobilux 2 |
Lithium |
Mineral |
190 |
280 |
-20~+130 |
¡¡ |
Mobilgrease 22 |
Lithium |
Diester Mineral |
192 |
274 |
-50~+140 |
L09 |
Mobilgrease 28 |
Bentonite |
Sythetic hydrocarbon |
¡Ý260 |
280 |
-60~+180 |
¡¡ |
Mobilplex 47 |
¡¡ |
Mineral |
¡Ý260 |
280 |
-20~+120 |
¡¡ |
Du Pont |
Krytox 240AC |
Fluorotelomer |
Fluorinated |
¡¡ |
282 |
-35~+290 |
¡¡ |
Krytox 283AC |
Fluorotelomer |
Fluorinated |
¡¡ |
229 |
-35~+290 |
¡¡ |
Krytox 143AC |
Fluorotelomer |
Fluorinated |
¡¡ |
¡¡ |
-35~+290 |
¡¡ |
Caltex |
Chevron SRI-2 |
Urea |
Mineral |
¡¡ |
293 |
-30~+175 |
L19 |
Anderol L-793A |
Lithium |
Diester |
¡¡ |
¡¡ |
-60~+150 |
¡¡ |
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BACK TO TOP |
II.
TOLERANCE |
Bearing tolerance
includes dimensional tolerance and revolving tolerance. Dimensional tolerance is a request
when bearings are mounted on shafts or in housings. It includes bore/outerside diameter
deviation from basic, inner ring/outer ring width deviation from basic and radius
allowance . Geometric tolerance includes bore/outside diameter deviation in single plane,
inner ring/outer ring width deviation in single radial plane. Revolving tolerance includes
radial and axial runout of assembled bearing inner ring and outer ring, inner ring
reference face runout with bore and outside cylindrical surface runout with outer ring
reference face. Tolerance class ranges from
common class 0 to 6,5,4 and 2,from low to high. Table 3 below is the tolerance class
stipulated in Chinese GB307 standard and its comparison with some other standards. |
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Table 3
COMPARISON
OF TOLERANCE CLASS
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Nationality |
Standard
Number |
Preision
grade |
Chinese |
GB307 |
0(G) |
6E |
5(D) |
4(C) |
2(B) |
ISO |
ISO492 |
0 |
6 |
5 |
4 |
2 |
Sweden |
Version 1985 |
0 |
P6 |
P5 |
P4 |
P2 |
West Germony |
DIN 620/2 |
Po |
P6 |
P5 |
P4 |
P2 |
U.S.A |
ANSI B3.14 |
ABEC1 |
ABEC3 |
ABEC5 |
ABEC7 |
ABEC9 |
Japan |
JIS B1514 |
0 |
6 |
5 |
4 |
2 |
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The standard
manufacturing tolerance for our precision radial bearings is class 6, as shown in Table 4. |
BACK TO TOP |
Table
4
INNER RING
|
d
mm |
¡÷ dmp |
Vdp |
Vdmp |
Kia |
¡÷
BS |
VBS |
Diameter
series |
all |
normal |
9 |
0.1 |
2.3.4 |
Over |
Incl. |
High |
Low |
Max |
Max |
Max |
High |
Low |
Max |
2.5 |
10 |
0 |
-7 |
9 |
7 |
5 |
5 |
6 |
0 |
-120 |
15 |
10 |
18 |
0 |
-7 |
9 |
7 |
5 |
5 |
7 |
0 |
-120 |
20 |
18 |
30 |
0 |
-8 |
10) |
8 |
6 |
6 |
8 |
0 |
-120 |
20) |
30 |
50 |
0 |
-10 |
13 |
10 |
8 |
8 |
10 |
0 |
-120 |
20 |
50 |
80 |
0 |
-12 |
15 |
15 |
9 |
9 |
10 |
0 |
-150 |
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