China External tooth type double-row equal-diameter four-point contact ball type swivel bearing Manufacturers, Suppliers

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China External tooth type double-row equal-diameter four-point contact ball type swivel bearing Manufacturers, Suppliers

The gears are machined on the outer circumference of the outer ring. The driving small gear meshes with the outer teeth, driving the outer ring (usually connected to the upper platform) to rotate, while the inner ring is fixed to the base. This combination perfectly combines a powerful comprehensive load-bearing capacity with extremely convenient drive integration and maintainability.Â

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Product Description

Advantages

Gold Balance Point

Achieves the best balance in terms of bearing capacity, cost, and maintainability.

Excellent Maintainability

The gear meshing condition is visible, measurable, and adjustable. It is very convenient to lubricate and replace the small gears.

Good Heat Dissipation

The gears are exposed, which is conducive to heat dissipation.

Mature Technology

Technologically mature, with a complete supply chain structure.

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
	Outer/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						ø	ø	T
1	031.25.560	676	444	110	640	480	18	M16	32	20	4	100	26	60	5	704	138	417	84
	032.25.560														6	706.8	115	410.4	69
2	031.25.630	746	514	110	710	550	18	M16	32	24	4	100	26	60	6	790.8	129	482.4	81
	032.25.630														8	790.4	96	475.2	60
3	031.25.710	826	594	110	790	630	18	M16	32	24	4	100	26	60	6	862.8	141	560.4	94
	032.25.710														8	862.4	105	555.2	70
4	031.30.800	742	658	130	898	702	22	M20	40	30	6	120	29	80	8	982.4	120	619.2	78
	032.30.800														10	988	96	614	62
5	031.30.900	1042	758	130	998	802	22	M20	40	30	6	120	29	80	8	1086.4	133	715.2	90
	032.30.900														10	1088	106	714	72
6	031.30.1000	1142	858	130	1098	902	22	M20	40	36	6	120	29	80	10	1198	117	814	82
	032.30.1000														12	1197.6	97	796.8	67
7	031.30.1120	1262	978	130	1218	1022	22	M20	40	36	6	120	29	80	10	1318	129	924	93
	032.30.1120														12	1317.6	107	916.8	77
8	031.40.1250	1426	1074	170	1374	1126	26	M24	45	40	5	160	39	90	12	1494.6	122	1012.8	85
	032.40.1250														14	1495.2	104	1013.6	73
9	031.40.1400	1576	1224	170	1524	1272	26	M24	45	40	5	160	39	90	12	1641.6	134	1156.8	97
	032.40.1400														14	1649.2	115	1153.6	83
10	031.40.1600	1776	1424	170	1724	1476	26	M24	45	45	5	160	39	90	14	1845.2	129	1349.6	97
	032.40.1600														16	1852.8	113	1350.4	85
11	031.40.1800	1976	1624	170	1924	1676	26	M24	45	45	5	160	39	90	14	2055.2	144	1545.6	111
	032.40.1800														16	2060.8	126	1542.4	97
12	031.50.2000	2215	1785	200	2149	1851	33	M30	48	48	8	188	47	120	16	2300.8	141	1702.4	107
	032.50.2000														18	2300.4	125	1699.2	95
13	031.50.2240	2455	2025	200	2389	2091	33	M30	48	48	8	188	47	120	16	2540.8	156	1942.4	122
	032.50.2240														18	2552.4	139	1933.2	108
14	031.50.2500	2715	2285	200	2649	2361	33	M30	60	56	8	188	47	120	18	2804.4	153	2203.2	123
	032.50.2500														20	2816	138	2188	110
15	031.50.2800	3015	2585	200	2949	2651	33	M30	60	56	8	188	47	120	18	3110.4	170	2491.2	139
	032.50.2800														20	3116	153	2488	125

Typical Applications

Yaw and pitch bearings of mainstream wind turbines (most of which adopt this form).
Luffing and rotating mechanisms of port container cranes (shore cranes).
Rotary supports for large crawler cranes and tower cranes.
Deck cranes on ships.

Frequently Asked Questions

What are the primary structural advantages of the 03 series bearings?

The 03 series achieves a "gold balance point," offering an optimized combination of load-bearing capacity, cost efficiency, and ease of maintenance.

Why is the maintenance for these bearings considered excellent?

The gear meshing status is completely visible, measurable, and adjustable. This transparent configuration makes lubrication processes and small gear replacements highly convenient.

How does the design support heat dissipation?

The gears are deliberately exposed to the environment, which significantly facilitates efficient heat dissipation during continuous operation.

What industrial equipment commonly uses this bearing series?

They are heavily utilized in yaw and pitch bearings of wind turbines, port container cranes (shore cranes), large crawler and tower cranes, and ship deck cranes.

How does the supply chain maturity benefit users of the 03 series?

With mature technology and an established, complete supply chain, parts are readily available, ensuring reliable production timelines and lower long-term maintenance costs.

Product Detail

China External tooth type double-row equal-diameter four-point contact ball type swivel bearing Manufacturers, Suppliers

Product Description

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Product Detail

China External tooth type double-row equal-diameter four-point contact ball type swivel bearing Manufacturers, Suppliers

Product Description

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