Deep Groove Ball Bearings
Deep Groove Ball Bearing
2021年9月18日

Ball Screw Support bearings are the optimal choice for high performance ball screw and actuator applications. They are designed to provide a combination of high rigidity, low drag torque, exceptional control of axial runout, higher speeds and longer life. Applications include machine tools, precision measuring equipment and robot technologies.

Product preview

Features:
1. Contact angle ― Various products with contact angles of 15 degrees, 25 degrees, 30 degrees, and 40 degrees are available
2. Cage ― Various cages made of polyamide, steel and brass are available

Single row angular contact ball bearings
This kind of bearing has a contact angle, so it is suitable for bearing axial load in one direction, or composite load. Structurally, the axial separation occurs after bearing the radial load. Therefore, two bearings should be used oppositely, or two or more bearings should be used in pairs. Single row angular contact ball bearings can use preloading method to increase rigidity, so they are suitable for machine tool spindles with high rotation accuracy. Generally, the angular contact ball bearing cages with contact angles of 30° (code A) and 40° (code B) are in accordance with Table 1. However, synthetic resin cages or polyamide molded cages are also used according to different conditions. The basic load rating described in the dimension table is based on the cage classification in Table 1.
Table 1 Standard cages of angular contact ball bearings
Bearing seriesStamping cageCopper alloy car cage
79A5,C-7900~7940
70A7000~70187019~7040
70C-7000~7022
72A,B7200~72227224~7240
72C-7200~7240
73A,B7300~73207321~7340
Paired double angular contact ball bearings
The structure and characteristics of paired double bearings are shown in Table 2
Table 2  Structural features of pairs of double bearings
FigureArrangementFeatures
图一Back to back in pairs
DB 
(example)7208ADB
It can bear radial load and axial load in two directions. The distance ao from the point of action is large, so it is suitable for applications with large moment loads.
图二  Face-to-face double
DF 
(example)7208 B DF
It can bear radial load and axial load in two directions. Compared with the back-to-back double connection, the distance of the action point is small, so the moment load capacity is poor
图三Tandem configuration
DT 
(example)7208A DT
It can bear radial load and axial load in one direction. Two bearings are used to bear the axial load, so it is used for occasions with heavy load in one direction.
Double row angular contact ball bearings
The single row angular contact ball bearing is back-to-back doubled, and the inner ring and the outer ring are each integrated into a structure. It can bear the axial load in two directions and has the moment load capacity. Can be used as a fixed end bearing. Use stamping cages.
4-point contact ball bearing
The inner ring is divided into two, and one bearing can bear the axial load in two directions. The contact angle is 35° and the axial load capacity is large, which is suitable for bearing pure axial load or synthetic load with large axial load. Use copper alloy car cage.

Product parameter list

Boundary dimensionsBasic load ratingsLimiting speeds(Refer.) Mass (kg)
 (mm)(kN)(r/min)
AC/AMdDBCr               C0rGreaseOil
7200103094.652.229000370000.031
72011232107.453.6527000340000.038
72021535118.14.2524000290000.048
720317401210.25.521000260000.07
720420471414.58.417000220000.112
720525521515.39.515000190000.135
720630621621.313.713000160000.208
720735721728.118.611000140000.295
720840801833.623.310000120000.382
720945851937.726.69400120000.43
721050902039.441.38500110000.485
7211551002148.737.1760095000.635
7212601102258.945.7690086000.82
7213651202367.354.2640080001.02
7214701252469.855.6610076001.12
7215751302579.265.2580072001.23
7216801402685.371.5540067001.5
7217851502810790.6700092001.87
72189016030123105650086002.3
72199517032122103440055002.78
722010018034137117410052003.32
722110519036149132390049003.95
722211020038162148370046004.65
722412021540174166340043005.49
722613023040196198320040006.21
722814025042218234290036007.76
723015027045248280270033009.75
73001035118.53.7527000330000.054
730112371210.24.624000310000.065
730215421312.56.4520000250000.088
730317471414.97.918000230000.12
730420521518.59.9523000310000.15
730525621724.814.414000170000.243
730630721930.118.912000140000.362
730735802135.42210000130000.475
730840902343.227.49200120000.657
7309451002555.137.18200100000.875
7310501102770.148.1730091001.14
7311551202980.956.5670084001.45
7312601303192.565.6620077001.81
7313651403310575.3580072002.22
7314701503511885.8540067002.7
7315751603712897500063003.15
73168017039139109470059003.85
73178518041150122440055004.53
73189019043161135420052005.3
73199520045172149400049006.12
732010021547184161360046007.53
732110522549208193350044008.62
7322110240502322263200400010.1
7324120260552462523000370012.6
7326130280583013292700340015.4
7328140300623293742500320018.8
7330150320653484142300290022.4
70001026852.3534000420000.021
7001122885.42.7529000370000.024
7002153296.13.4526000320000.035
70031735106.754.1523000280000.045
700420421210.36.119000240000.079
700525471211.37.417000210000.091
700630551314.510.114000180000.133
700735621417.512.612000150000.17
700840681518.714.611000140000.21
700945751622.217.7100000120000.26
701050801623.620.19200110000.29
701155901831.126.38300100000.42
701260951831.928.1770097000.45
7013651001833.731.4720090000.47
7014701102042.739.4660083000.66
7015751152043.641.7630078000.69
7016801252253.450.6580072000.93
7017851302254.653.7550068000.97
7018901402465.263.3510064001.26
7019951452466.667.1480060001.32
70201001502468.470.6470059001.37
70211051602679.881.9440055001.73
70221101702891.992.8420052002.14
70241201802896.6103390049002.27
702613020033117125350044003.43
702814021033120133330041003.64
703015022535137154300038004.43