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Teeth Hardened OEM External Gear Turntable Bearing

Slewing ring bearing is also called slewing ring, slewing bearing, turntable bearing, and rotary bearing.
Slewing ring bearing is a bearing that able to bear axial load, radial load and overturning torque. Under normal circumstances, slewing ring bearings have their own mounting holes, lubricant holes and seal holes, to meet the different needs of the various host working under the various conditions;
On the other hand, slewing ring bearing itself has characteristics of compact structure, guide rotating convenient, easy to install and maintaining easily.
Quantity:
  • HJW.20.625
  • XUZHOU HELIN

The heat treatment of slewing bearing track and gear, also called quenching treatment, is that the raceway of slewing bearing is subject to surface induction quenching treatment, and the quenching hardness ensures that the qualified quenching layer depth can be achieved with different track diameter, steel ball size and quenching layer depth at HRC55 ~ 62.

Due to the need of transmitting force, one ring of slewing ring is usually made with teeth. The heat treatment state of gear is generally quenched and tempered, and the hardness is 207 ~ 262hb. The tooth surface with special requirements can also be quenched according to the user's requirements. The quenching hardness is HRC55 ± 5 and can ensure sufficient depth. According to different applications, gear quenching can be divided into full tooth quenching and single tooth induction quenching. Single tooth induction quenching can be divided into tooth surface root quenching and tooth surface quenching.

18

External gear single row ball four-point 

The single-row four-point contact ball slewing ring is composed of two seat rings and has a compact structure. The steel ball contacts the arc raceway at four points. The size of the single-row ball slewing ring is large, mainly 0.4 to 10 meters, and some up to 40 meters, which can withstand several aspects of pressure. In addition, the single-row ball slewing bearing has a low operating speed and can achieve continuous rotation. The single-row ball slewing bearing has a relatively strong bearing capacity, can bear axial force, radial force and tilting moment, and can realize continuous rotation, especially reciprocating rotation within a certain angle, which is equivalent to the so-called "swing bearing".

Mainly used for truck cranes, tower cranes, excavators, pile drivers, graders, road rollers, dynamic compactors, rock drilling machinery, engineering vehicles, radar scanning equipment, etc. to bear the overturning moment, vertical axial force, and horizontal inclination force.

Please find the following slewing bearing size information : 

Note:
1. n1 is the nos of lubricating holes.Oil cup M10×1JB/T7940.1~JB/T7940.2.The Oil nipple's location can be change according to the user's application.
2. n-φcan change to tapped hole,the diameter of tapped hole is M,depth is 2M.
3. The tangential tooth force in the form is the max tooth force,the nominal tangential tooth force is 1/2 of the max one.
4. "K" is addendum reduction coefficient.

No. External gear Dimensions Mounting Dimensions Structural Dimension Gear circumferential force Gear circumferential force Weight
DL
mm D d H D1 D2 n mm n1 D3 d1 H1 h b x m De z Quenching kg

mm mm mm mm mm mm mm mm mm mm mm mm mm T 104N
1 HJW.20.625 725 525 80 685 565 18 18 3 627 623 68 12 60 1.4 5 751.9 146 5.2 100
HJW.20.625A 1.15 6 755.5 122 6.2
2 HJW.20.720 820 620 80 780 660 18 18 3 722 718 68 12 60 1.4 6 860.3 139 6.2 120
HJW.20.720A 1 8 861.1 104 8.3
3 HJW.30.820 940 705 95 893 749 24 20 4 822 818 83 12 70 1.4 6 980.6 159 7.2 210
HJW.30.820A 1 10 986.2 95 12.2
4 HJW.30.880 1000 760 95 956 800 24 20 4 882 878 83 12 70 1.15 8 1047.5 127 9.7 230
HJW.30.880A 1 10 1046.3 101 12.2
5 HJW.30.1020 1170 875 95 1120 930 24 22 4 1022 1018 80 15 70 1.4 8 1219.3 148 9.7 300
HJW.30.1020A 1.15 10 1219.2 118 12.2
6 HJW.36.1220 1365 1075 120 1310 1130 36 24 6 1222 1218 105 15 90 1.4 10 1424.9 138 15.7 450
HJW.36.1220A 1 12 1435.9 116 18.8
7 HJW.36.1250 1400 1090 120 1350 1150 36 26 6 1252 1248 105 15 90 -0.35 10 1443 143 15.7 520
HJW.36.1250A 1 12 1449.6 117 18.8
8 HJW.36.1435 1595 1278 120 1535 1335 36 26 6 1437 1433 105 15 90 1.15 12 1655.5 134 18.8 610
HJW.36.1435A 1 14 1661.2 115 21.9
9 HJW.45.1540 1720 1360 140 1660 1420 42 26 6 1543 4537 122 18 110 1.4 12 1780.8 144 23 732
HJW.45.1540A 1.15 14 1791.1 124 26.8
10 HJW.45.1700 1875 1525 140 1815 1585 42 29 6 1703 1697 122 18 110 1.15 14 1945.4 135 26.8 844
HJW.45.1700A 1.15 16 1950.8 118 30.5
11 HJW.45.1880 2100 1665 160 2030 1740 48 32 6 1883 1876 140 20 115 1.4 14 2189.8 152 27.8 1400
HJW.45.1880A 1.15 18 2194.6 118 35.8
12 HJW.45.2115 2325 1900 160 2245 1980 48 32 6 2118 2112 140 20 115 1.4 16 2406.5 146 31.9 1600
HJW.45.2115A 1.15 20 2418.4 117 40
13 HJW.45.2370 2600 2146 180 2520 2220 48 32 6 2373 2367 158 22 130 1.4 18 2707.3 146 40.7 2100
HJW.45.2370A 1.15 22 2704.4 119 49.7
14 HJW.45.2600 2835 2365 180 2750 2450 54 36 6 2603 2597 158 22 130 1.4 18 2941.7 159 37.6 2400
HJW.45.2600A 1.15 22 2946.9 130 45.9
15 HJW.50.2820 3085 2555 200 3000 2640 54 36 6 2823 2817 178 22 150 1.4 20 3188.4 155 52.2 3400
HJW.50.2820A 1.15 25 3198.4 124 65.3
16 HJW.50.3120 3400 2840 200 3310 2930 54 36 6 3123 3117 178 22 150 1.4 22 3507.2 155 57.4 4000
HJW.50.3120A 1.4 25 3509.6 136 65.3
17 HJW.50.3580 3920 3240 240 3820 3340 60 40 6 3583 3577 218 22 190 1.4 22 4036.1 179 72.7 6700
HJW.50.3580A 1.4 25 4035.6 157 82.6
18 HJW.50.4030 4370 3690 240 4270 3790 66 40 6 4033 4027 218 22 190 1.4 22 4520.6 201 53.6 7700
HJW.50.4030A 1.4 28 4522.4 157 68.2
19 HJW.50.4540 4860 4210 240 4760 4310 72 40 6 4543 4537 218 22 190 1.4 22 4983.1 222 72.1 8760
HJW.50.4540A 1.4 30 4992.9 162 99.1



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We are Xuzhou Helin Slewing Bearing Co.,Ltd Slewing bearing factory in Xuzhou city . Our slewing bearing size from 100 mm - 5000 mm with standard and non- standard models . Good product quality, short delivery time, suitable price, high cost performance . welcome to contact us . 
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