7200 Single-row Angular Contact Ball Bearing
7200 Single-row Angular Contact Ball Bearing
Product Details

If you are going to import 7200 bearing in stock or you want to check the price with one China 7200 bearing manufacturer, supplier and factory, please feel free to contact Weinuo Machinery.

The number of loaded ball is more than the deep groove ball bearing, the largest load rating in the ball bearing, rigidity and smooth operation.

1. Precision

The precision of a spindle bearing does affect the guiding properties as well as lifetime, especially with applications at max. speed.  HTH high precision bearings are manufactured to precision class 4,calss 2 and class 5 (P4, P2 and P5) as well as ABEC 7, ABEC 9 and ABEC 5. 

For special applications, e.g. vacuum pumps, gyroscopes as well as measuring engineering and optical systems, HTH manufactures bearings to the internal tolerance classes HG (high precision) and UP (ultra precision). Apart from the requirements mentioned, the tolerance classes contain additional selection criteria. The relationship between the various standards are explained below.

GB/T30794

ISO

DIN

AFBMA

C

Class 4

P4

ABEC7

B

Class 2

P2

ABEC 9

D

Class 5

P5

ABEC5

2. Contact angle 

The contact angle is formed by a straight line drawn between the points of contact of the balls with the raceways and a plane perpendicular to the bearing axis. Externally applied loads are transmitted from one ring to the other along this line. 

The contact angle is designed into the bearing and changes during operation with the speed, the external forces and the difference in temperature between the inner and the outer ring.

With increasing contact angle:

a, Limiting speed decreases

b, Radial rigidity decreases

c, Axial rigidity increases

HTH manufactures spindle bearings with 15°, 25°, 30° and 40°contact angles. Other contact angles available on request. 

3. Application

HTH Angular contact bearings can also be supplied with side faces ground for mounting side-by-side, Suffixes Df, DB, and DT are being used in the bearing designation, i.e. 7250 BG. They can be mounted in any of three combinations depending on the loading characteristics: - A back-to-back arrangement (closed face together, load line of the bearings diverging towards the shaft axis) is used where rigidity and an ability to absorb fitting moment is required. 

universal bearing.jpg

arrangement.jpg

4. Material 

Careful selection of material is a factor when applications require bearings to provide superior hardness and anti-corrosion or heat-resistance. So we always choose standard materials.

Chrome Steel

SpecSymbolChemical  Composition (wt%)
CSiMnPSCrMo
JISSUJ20.95~1.100.15~0.350.50 MAX0.025 MAX0.025 MAX1.30~1.60-
ASTM/AISI/SAEE521000.98~1.100.15~0.350.25~0.450.025 MAX0.025 MAX1.30~1.60-
GBGCr150.95~1.050.15~0.350.20~0.400.027 MAX0.020 MAX1.30~1.65-

5. Lubrication

lubrication.jpg

6. How  HTH to make  heat Treatment for bearings

Heat-treatments consisted of preheating samples at 843 C (1550 F) using a Sybron Thermolyne 30400 furnace, and then austenitizing samples in a Keith furnace at temperatures of 843-1215 C (1550-2220 F); immediately followed by warm high-speed oil quenching at 48.9 C (120 F). Pre-heating was done to ramp the temperature of the samples prior to austenitizing and to prevent thermal shock. 

One heat treatment per steel was carried out with cryogenic quenching at -48.9 C (-120 F) immediately after oil quenching to increase the formation of marten site. The cryogenic quench was prepared by submerging dry ice into ethanol. 

The final step was tempering, it was conducted at temperatures ranging from 135 to 537 C (275-1000 F). 

More information please contact us:tang@fycbearings.com

Dimensions
(mm)
Basic load ratings
(KN)
Limiting speeds
(rpm)
Mass
(kg)
Part No.
dDBrs minr1s minCorCrGreaseOil(Approx.)HTH
103090.60.35.452.7428,00037,0000.0297200
1232100.60.37.63.9525,00033,0000.0357201
1535110.60.39.054.722,00029,0000.0467202
1740120.60.3126.619,00026,0000.0647203
20471410.614.58.417,00023,0000.17204
25521510.616.210.314,00019,0000.1257205
30621610.622.514.812,00016,0000.1937206
3572171.10.629.720.111,00014,0000.2817207
4080181.10.635.525.19,60013,0000.3557208
4585191.10.639.528.78,70012,0000.4047209
5090201.10.641.531.57,90010,0000.4577210
55100211.515139.57,1009,5000.67211
60110221.5161.5496,6008,8000.7657212
65120231.5170.5586,1008,1000.9627213
70125241.5176.563.55,7007,6001.097214
75130251.517968.55,3007,1001.177215
80140262189765,0006,6001.397216
85150282199.588.54,7006,2001.787217
9016030211181034,4005,9002.187218
95170322.11.11331184,1005,5002.677219
100180342.11.11441263,9005,2003.27220
105190362.11.11571423,7005,0003.797221
110200382.11.11701583,5004,7004.457222
120215402.11.11831773,2004,3006.267224
1302304031.11961983,0004,0007.157226
1402504231.12032152,7003,6008.787228
1502704531.12322592,5003,400117230
1602904831.12633052,4003,20013.77232
1703105241.52953602,2003,000177234
1803205241.53053852,1002,80017.77236
1903405541.53053902,0002,60021.37238
2003605841.53354501,9002,50025.37240
103090.60.352.5224,00032,0000.0297200B
1232100.60.373.6521,00028,0000.0367201B
1535110.60.38.354.3518,00025,0000.0467202B
1740120.60.3116.117,00022,0000.0667203B
20471410.613.37.715,00020,0000.1027204B
25521510.614.89.412,00016,0000.1297205B
30621610.620.513.511,00014,0000.1977206B
3572171.10.627.118.49,30012,0000.2877207B
4080181.10.632238,30011,0000.3757208B
4585191.10.63626.27,4009,9000.417209B
5090201.10.637.528.66,7009,0000.4667210B
55100211.5146.5366,1008,2000.6127211B
60110221.515644.55,7007,6000.787212B
65120231.5163.552.55,2007,0000.9817213B
70125241.5169584,9006,5001.117214B
75130251.5171.5624,5006,0001.197215B
80140262180.569.54,3005,7001.427216B
8515028219080.54,0005,3001.827217B
901603021107943,8005,0002.227218B
95170322.11.11211073,5004,7002.727219B
100180342.11.11301143,4004,5003.267220B
105190362.11.11421293,2004,3003.877221B
110200382.11.11541443,0004,0004.547222B
120215402.11.11651622,8003,7006.267224B
1302304031.11771802,5003,4007.157226B
1402504231.11831952,3003,1008.787228B
1502704531.12102352,2002,900117230B
1602904831.12382792,0002,70013.77232B
1703105241.52663251,9002,500177234B
1803205241.52763501,8002,40017.77236B
1903405541.52733551,7002,20021.37238B
2003605841.53054101,6002,10025.37240B
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