China Internal gear type double-row equal-diameter four-point contact ball type swivel bearing Manufacturer, Suppliers

The gear processing is carried out on the inner circumference of the inner ring. The driving small gear meshes with the internal teeth to drive the inner ring (usually connected to the upper platform) to rotate, while the outer ring is fixed. In compact designs where the maximum outer diameter and the rotational profile must be strictly controlled, an integrated large-capacity drive solution is provided. 

Product Description

Advantages

The structure is the most compact and the radial size is the smallest: All functions are integrated, making it the preferred choice for "compact" designs.

The gears are protected: They are less susceptible to direct damage from external collisions and extreme weather conditions.

The appearance is neat, with no protruding components.

Technical Characteristics

03 series of basic parameters
Serial number Basic Size Configuration Size Mounting Size Structural Size Gear Data Outer Gear Data Inner Gear Data
Inner teeth D d T D1 d1 Bolt Hole Screw Hole n n1 H h b m da Z da Z
Type 0 Type 123
D0 Φ Φ T
1 033.25.560 676 444 110 640 480 18 M16 32 20 4 100 26 60 5 704 138 417 84
034.25.560 6 706.8 115 410.4 69
2 033.25.630 746 514 110 710 550 18 M16 32 24 4 100 26 60 6 790.8 129 482.4 81
034.25.630 8 790.4 96 475.2 60
3 033.25.710 826 594 110 790 630 18 M16 32 24 4 100 26 60 6 862.8 141 560.4 94
034.25.710 8 862.4 105 555.2 70
4 033.30.800 742 658 130 898 702 22 M20 40 30 6 120 29 80 8 982.4 120 619.2 78
034.30.800 10 988 96 614 62
5 033.30.900 1042 758 130 998 802 22 M20 40 30 6 120 29 80 8 1086.4 133 715.2 90
034.30.900 10 1088 106 714 72
6 033.30.1000 1142 858 130 1098 902 22 M20 40 36 6 120 29 80 10 1198 117 814 82
034.30.1000 12 1197.6 97 796.8 67
7 033.30.1120 1262 978 130 1218 1022 22 M20 40 36 6 120 29 80 10 1318 129 924 93
034.30.1120 12 1317.6 107 916.8 77
8 033.40.1250 1426 1074 170 1374 1126 26 M24 45 40 5 160 39 90 12 1494.6 122 1012.8 85
034.40.1250 14 1495.2 104 1013.6 73
9 033.40.1400 1576 1224 170 1524 1272 26 M24 45 40 5 160 39 90 12 1641.6 134 1156.8 97
034.40.1400 14 1649.2 115 1153.6 83
10 033.40.1600 1776 1424 170 1724 1476 26 M24 45 45 5 160 39 90 14 1845.2 129 1349.6 97
034.40.1600 16 1852.8 113 1350.4 85
11 033.40.1800 1976 1624 170 1924 1676 26 M24 45 45 5 160 39 90 14 2055.2 144 1545.6 111
034.40.1800 16 2060.8 126 1542.4 97
12 033.50.2000 2215 1785 200 2149 1851 33 M30 48 48 8 188 47 120 16 2300.8 141 1702.4 107
034.50.2000 18 2300.4 125 1699.2 95
13 033.50.2240 2455 2025 200 2389 2091 33 M30 48 48 8 188 47 120 16 2540.8 156 1942.4 122
034.50.2240 18 2552.4 139 1933.2 108
14 033.50.2500 2715 2285 200 2649 2361 33 M30 60 56 8 188 47 120 18 2804.4 153 2203.2 123
034.50.2500 20 2816 138 2188 110
15 033.50.2800 3015 2585 200 2949 2651 33 M30 60 56 8 188 47 120 18 3110.4 170 2491.2 139
034.50.2800 20 3116 153 2488 125

Typical Applications

Compact wind turbines (especially some direct-drive designs).

Crane equipment for space-constrained offshore platforms and marine vessels.

📡

Military radars, electro-optical platforms (requiring low profile and high integration).

🚜

Rotary mechanisms for certain special engineering vehicles.

Frequently Asked Questions (FAQ)

Why are the 03 series components preferred for compact designs?

The 03 series integrates all functions into a single system, achieving the most compact structure and smallest radial size available. This makes it ideal for operations with severe space restrictions.

How does the system protect gears from damage?

The unique design fully encloses and protects the gears, making them significantly less susceptible to direct damage from external collisions and extreme weather conditions.

What types of applications benefit from this compact configuration?

Typical applications include direct-drive compact wind turbines, space-constrained offshore crane systems, military radars, electro-optical platforms, and specialized rotary engineering vehicles.

What configuration size options are available for the 03 series?

The series offers outer dimensions ranging from 676mm to 3015mm, supporting various inner and outer gear configurations to suit different structural requirements.

How does the integrated neat appearance improve performance?

With no protruding components, the neat exterior reduces the risk of mechanical interference and ensures smooth operations in highly integrated engineering setups.

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