Ningbo Accor Bearing Co.,Ltd.

Wednesday, Sep 08th

Last update12:51:00 AM GMT

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1. Material
-The rings, balls, needles and rollers of ACCOR bearings can be made of refining bearing steel AISI52100, stainless steel AISI440C, AISI420, etc. 
-Cages are normally punch-pressed from brass strips H62 or steel strips 08, SPCC BQB402, as well as stainless steel strips AISI304, AISI302, fiber reinforced phenolic resin, plastics or copper stock, etc; 
-The shields can be made of Japanese SPCC JISG3141 or stainless steel AISI304 or AISI302.
-Seals: synthetic rubber hot pressed with phosphatizing steel (AISI304 or AISI302 may used for stainless steel bearings) skeleton 
The chemical composition of bearing steel and stainless steel are listed as follows:

Steel No. c% Si% Mn% S% P% Cr%
AISI52100 0.95-1.05 0.15-0.3 0.25-0.45 <0.025 <0.025 1.3-1.6
AISI440C 0.90-1.05 <0.8 <0.8 <0.04 <0.03 16-19
Country China ISO U.S.A Germany Japan Sweden
Bearing Steel No. GCr15 683/XVII1 (AISI)52100 (Din)100Cr6 (Jis)SVJ2 SKF3

2. LUBRICANTS
- standard greases are supplied with shielded or sealed bearings as standard Different types oil lubricants can be supplied upon request and are standard for open bearings  
Characteristics of Grease lubrication:

Company Brand Designation Dropping tem. Penetration Woring Tem.   Remarks 
Shell  Alivania RL2 185 265-295 -35~120 General purpose
Alivania RL3 185 220-250 -35~135
Alivania RA 180 250-275 -25~100
Alivania EP1 180 310-340 -25~110
Alivania EP2 185 265-295 -25~110
Darina 2 250 265-295 -25~150 high Tem. service     
Darina EP2 250 265-295 -25~150
Dolium R2 250 265-295 -35~150 corrosion resistnat  
Esso Andok C 260 190-210 -30~120 General purpose     
Andok 260 190 204-260 -40~120
Beacon 325 190 255-280 -54~120 low Tem. service     
Chevron SRI-2 240 255-280 -30~120 water resistnat        
Mobil  Moilux 2 190 265-290 -10~110 General purpose       
Mobil 22 192 260-274 -40~120
Mobil 28 260 265-295 -55~175 wide range Tem. service 
Mobil 48 260 240-270 -60~170 high Tem. service  
Kluber Isoflex LDS 18 190 255-280 -50~110  low Tem. service        
Isoflex NBU 15 250 255-280 -30~120 General purpose       
Kyodo Yushi Multemp SRL 185 225-245 -40~145 low torque service   
Multemp PS2 190 250-275 -50~110 low Tem. service  
Multemp ET150 260 255-280 -10~160 　
China Hangu Hangu 2 198 265-295 -10~130 low noise service

3. Rolling Bearing's Tolerance
Precision of radial bearings (excepting taper roller bearings)
Pillow block Tolerances
Fit Tolerances
Flange Housing Tolerances
C Type housing Tolerances
T Type housing Tolerances
Punching Housing Tolerances

4.Bearing Precision Grade

Standards Precision Grade
GB G E D C B
ISO Normal Class Class6 Class5 Class4 Class2
ANSI ABEC-1 ABEC-3 ABEC-5 ABEC-7 ABEC-9
DIN P0 P6 P5 P4 P2
JIS 0 6 5 4 2

5.Bearing's Internal Radial Clearance
Deep Groove Ball Bearings
Matched Angular Contact Ball Bearings
Double Row Angular Contact Ball Bearings
Self-aligning Ball Bearings
Electrical Motor Bearings
Cylindrical Roller Bearings Needle Roller Bearings
Spherical Roller Bearings

6 Deep Groove Ball Bearing's Vibration and Noise Class
The vibration and noise of bearings are classified as four classed as Z1,Z2,Z3 and Z4.It is measured by the instrument of S0910-1,For special requirement,it is measured by BVT-1 and classified as V1, V2, V3 and V4.The data are shown as below. Customer need mark their requirement of vibration and noise class on the order. 
Tolerance data for vibration of single bearing          Unit: um/s

d V V1 V2 V3 V4
mm Low Medium High Low Medium High Low Medium High Low Medium High Low Medium High
Band Band Band Band Band Band Band Band Band Band Band Band Band Band Band
3,4 80 44 44 60 35 32 48 26 22 31 16 15 28 10 10
5,6 110 72 60 74 48 40 58 36 30 35 21 18 32 11 11
7,8,9 130 96 80 92 66 54 72 48 40 44 28 24 38 12 12
10,12 160 120 100 120 80 70 90 60 50 55 35 30 45 14 15
15 210 150 120 150 100 85 110 78 60 65 46 35 52 18 18
17 210 150 120 150 100 85 110 78 60 65 46 35 52 25 25
20 260 190 150 180 125 100 130 100 75 80 60 45 60 25 25
22,25 260 190 150 180 125 100 130 100 75 80 60 45 60 30 32
28 260 190 150 180 125 100 130 100 75 80 60 45 60 35 40
30,32 300 240 190 200 150 130 150 120 100 90 75 60 70 35 40
35 300 240 190 200 150 130 150 120 100 90 75 60 70 42 45
40 360 300 260 240 180 160 180 150 130 110 90 80 82 50 50
45 360 300 260 240 180 160 180 150 130 110 90 80 82 60 60
50 420 320 320 280 200 200 210 160 160 125 100 100 95 70 70

Maximum vibration acceleration of single bearing   Unit: dB

d Diameter Series(0) Diameter Series(2) Diameter Series(3)
mm Z Z1 Z2 Z3 Z Z1 Z2 Z3 Z4 Z Z1 Z2 Z3 Z4
3 35 34 32 28 36 35 32 30 _ 37 36 33 31 _
4 35 34 32 28 36 35 32 30 _ 37 36 33 31 _
5 37 36 34 30 38 37 34 32 _ 39 37 35 33 _
6 37 36 34 30 38 37 34 32 _ 39 37 35 33 _
7 39 38 35 31 40 38 36 34 _ _ _ _ _ _
8 39 38 35 31 40 38 36 34 _ _ _ _ _ _
9 41 40 36 32 42 40 37 35 _ _ _ _ _ _
10 43 42 38 33 44 42 39 35 30 37 44 40 37 32
12 44 43 39 34 45 43 39 35 30 47 45 40 37 32
15 45 44 40 35 46 44 41 36 31 48 46 42 38 33
17 46 44 40 35 47 45 41 36 31 49 47 42 38 33
20 47 45 41 36 48 46 42 38 33 50 48 43 39 34
22 47 45 41 36 48 46 42 38 33 50 48 43 39 34
25 48 46 42 38 49 47 43 40 36 51 49 44 41 37
28 49 47 43 39 50 48 44 41 37 52 50 45 42 38
30 49 47 43 39 50 48 44 41 37 52 50 45 42 38
32 50 48 44 40 51 49 45 42 38 53 51 46 43 39
35 51 49 45 41 52 50 46 43 39 54 52 47 44 40
40 53 51 46 42 54 52 47 44 40 56 54 49 45 41
45 55 53 48 45 56 54 49 46 43 58 56 51 47 44
50 57 54 50 47 58 55 51 48 45 60 57 53 49 46
55 59 56 52 49 60 57 53 50 47 62 59 54 51 48
60 61 58 54 51 62 59 54 51 48 64 61 56 53 50