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hlf@anjqbearings.com+8615395302735

Materials and tolerances


Bearing The Selection Of Material

The ring and balls of SDLB bearings are made of refining steel GCr15(AIS152100),the retainerare
punched from brassstrip(H62)ortop quality cold-rolled steel strip(SPCC BQB402)and reinforced
plastics are avail-able if necessary.Theshield is made ofimported special material (SPCCJISG314),sealing ring adopts phosphatingframed and fiber-like oiresistant rubberhot-pressingis
made.

Steel NO. C(%) Si(%) Mn(%) S(%) P(%) Cr(%)
GCr15 0.95-1.05 0.15-0.3 0.25-0.45 0.025 0.025 1.3-1.6
9Cr18Mo 0.90-1.05 <0.8 <0.8 <0.04 <0.03 16-19
Bearing accuracy
Bearing accuracy,refers to the size precision and the rotating precision.International bearing
precision grade is dividedinto:level 0.level 6.level 5.level 4.level2,eauivalent to ISO standard,the
different standards of precision gradecontrast follows.
NO. Accuracy Grade
GB 中国 0 6 5 4 2
ISO 国际 0 6 5 4 2
ANSI 美国 ABEC1 ABEC3 ABEC5 ABEC7 ABEC9
SKF 瑞典 P0 P6 P5 P4 P2
DIN 德国 P0 P6 P5 P4 P2
JIS 日 本 0 6 5 4 2

(0 levels of Tolerance inner ring) :μm

d
mm
Admp Vdp Vdmp Kia △Bs VBs
直 D iam e t e rseres
Al1

Normal
²
7.8.9 0、1 2.3.4

Exceed

To

Upper
deviation

Lower
deciation
Max
Max

Max

Upper

Lower deviation

Max
0.6 2.5 0 8 10 8 6 6 10 0 40 12
2.5 10 0 -8 10 8 6 6 10 0 -120 -250 15
10 18 0 8 10 8 6 6 10 0 -120 -250 20
18 30 0 -10 13 10 8 8 13 0 -120 -250 20
30 50 0 -12 15 12 9 9 15 0 -120 -380 20
50 80 0 -15 19 19 11 11 20 0 -150 -380 25
80 120 0 -20 25 25 15 15 25 0 -200 -500 25
120 180 0 -25 31 31 19 19 30 0 -250 -500 30
180 250 0 -30 38 38 23 23 40 0 -300 -500 30
250 315 0 -35 44 44 26 26 50 0 -350 -630 35
315 400 0 40 50 50 30 30 60 0 400 40
400 500 0 -45 56 56 34 34 65 0 -450 50
500 630 0 -50 63 63 38 38 70 0 -500 60
630 800 0 -75 - 80 0 -750 70
800 1000 0 -100 90 0 -1000 80
1000 1250 0 -125 - 100 0 -1250 100
1250 1600 0 -160 - - 120 0 -1600 120
1600 2000 0 -200 140 0 -2000 140
(0 levels of tolerance of outer ring) :pm
d
mm
△Dmp Open beanng
Closed
type
bearing
VDmp Kea △cs Ves
Diameter series
7.8.9 0.1 2.3.4 2.3、4

Exceed

To


devtalen


devialen
M a x
Max

Max

Upper


devaten

Max
2.5 6 0 -8 10 8 6 10 6 15
With the same bearing
inner ring of△Bs and VBs
ofthe same
6 18 0 -8 10 8 6 10 6 15
18 30 0 -9 12 9 7 12 7 15
30 50 0 -11 14 11 8 16 8 20
50 80 0 -13 16 13 10 20 10 25
80 120 0 -15 19 19 11 26 11 35
120 150 0 -18 23 23 14 30 14 40
150 180 0 -25 31 31 19 38 19 45
180 250 0 -30 38 38 23 23 50
250 315 0 -35 44 44 26 26 60
315 400 0 -40 50 50 30 30 70
400 500 0 -45 56 56 34 34 80
500 630 0 -50 63 63 38 38 100
630 800 0 -75 94 94 55 55 120
800 1000 0 -100 125 125 75 75 140
1000 1250 0 -125 - - - 160
1250 1600 0 -160 - 190
1600 2000 0 -200 - 220
2000 2500 0 -250 250

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CONTACT US

Contact: huo sheng

Phone: +8615395302735

Tel: +8615395302735

Email: hlf@anjqbearings.com

Add: . 24, Zone A, Sino French Trade City, Wanzhou District, Wuhu City, Anhui Province, China

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