Four-Point Contact Ball Slewing Bearings Manufacturer

Four-Point Contact Ball Slewing Bearings

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Slewing bearing with single-row ball design

The four-point contact ball slewing bearing is designed with rolling elements and raceway for point contact. With compact structure and flexible rotation, the slewing bearing not only can simultaneously withstand axial load, radial load, overturning moment, but also can withstand a single direction load.

A notable advantage of this bearing type is its smaller cross-sectional size and lighter weight compared to other bearings, which doesn't compromise its ability to manage significant loads. Typically, these bearings are made from 42CrMo4 steel with the raceways hardened through an induction process to enhance durability. However, depending on the specific needs of the application, other materials can be used to meet different performance requirements.

Manufacturing Capability

LYXQL has developed significant expertise in manufacturing four-point contact ball slewing bearings, demonstrating advanced capabilities in both integrated and split structures. Our manufacturing capacity includes producing bearings with an outer diameter of up to 12 meters for integrated structures and up to 20 meters for split structures.

We are also equipped to handle a wide range of gear module sizes, with a maximum module of 45 and a minimum of 4.

(We are capable of customizing non-standard products based on specific customer requirements.)

Options of Slewing Bearings

Slewing bearings are available in three main configurations: external gear, internal gear, and gearless designs. Each of these configurations consists of rings (both inner and outer), steel balls, spacers (also known as bearing cages), and seals. Depending on the application, additional dust-proofing features, such as dust covers or ash shields, can be added.

This type features gear teeth on the outer ring, making it suitable for applications where the gear mesh occurs externally. Due to the external positioning of the gears, this design generally requires more installation space compared to internal gear slewing rings.

Technical Parameters

The following specifications are from a previous version of our catalog. If you require the latest data or custom configurations, please don’t hesitate to contact us directly.

Designations	Boundary dimensions			Bolt hole diameter						Structure dimensions						Gear parameters					Basic load ratings	Mass
	D	d	H	D1	D2	n1	n2	⌀1	⌀2	D3	d1	H1	h	n3	ф3	m	Da	Z	b	x	Coa
		mm		mm		n1	n2	mm		mm				n3	mm	m	mm	Z	mm	x	10⁴N	kg
D178794	694	470	77	630	500	18	18	M16	18	567.5	564.5	64	13	6	M10X1	6	696	114	60	0	157	93.1
1787/600G	786	600	72	740	636	20	24	M18X2.5	19	689	691	60	7	4	ZG1/8in	6	789	131	50	0	107	94.1
1787/674G2	853	674	70	825	709	34	23	20	M20	764	768	59	10	2	ZG1/8in	7	889	125	50	0	183	89
1787/674G2K	853	674	70	825	709	34	24	18	18	764	768	59	10	2	ZG1/8in	7	889	125	50	0	183	88.6
1787/710G2	894	710	67	845	744	8	8	M10	M10	798	806	58	9	3	M10X1	6	924	152	55	0	179	107
1787/710G2K	894	710	67	875	760	8	12	M10	M12	798	806	58	9	3	M10X1	6	924	152	55	0	179	107
1787/710G2K1	894	710	67	865	744	20	20	13	13	798	806	58	9	4	M10X1	6	924	152	55	0	179	107
1787/800G	1050	800	90	1012	838	30	30	20	20	923	927	76	16	3	M10X1	6	1092	180	60	0	215	217
1787/800GK	1050	800	90	1012	838	30	30	20	20	923	927	76	16	3	M10X1	6	1092	180	60	0	215	217
1788/1040G2	-	1040	80	1220	1080	30	30	M16	17.5	1153	1157	70	10	-	-	10	1314.1	125	70	0	297	251
1787/1060G	1335	1060	109	1295	1105	24	24	M20	22	1198	1202	100	9	4	M8X1	10	1388	138	80	-0.6	501	407
1787/1075	1365	1075	120	1310	1130	36	36	26	26	1218	1222	105	15	4	M8X1	8	1424	176	90	0	463	463
1787/1075K	1365	1075	130	1310	1130	36	36	24	24	1218	1222	105	10	-	-	10	1420	140	120	0	463	550
1787/1075G2	1365	1075	120	1310	1130	36	36	24	24	1218	1222	105	15	4	M10X1	10	1424.91	138	90	1.4	463	463
1787/1075G2K	1365	1075	120	1310	1130	36	36	M24	26	1218	1222	105	15	4	M8X1	8	1424	176	90	0	463	463
1787/1330G2	1475	1330	82.4	1510	1362	24	24	18.5	18.5	1439	1445	70	12.4	6	M10X1	9	1584	174	70	0	353	280
3-647G	1407	1352	100	1370	1404	18	13	M8	M10	1390	1394	63	-	8	6	4.5	1449	320	60	0	216	143
1788/1410G2	-	1410	85	1590	1454	36	36	M16	17.5	1524.6	1528.6	70	15	-	-	10	1676.4	160	70	0	395	312
1787/1640G	2050	1640	160	1990	1710	30	30	28	28	1844	1856	140	20	2	M14X1.5	10	2108	210	105	-0.6	1118	1264
1787/1700	1945	1700	120	1900	1750	24	24	M18	21	1825	1845	110	10	4	M10X1	5	1970	392	35	0	405	516
1789/1700GM	2052	1700	100	1980	1780	24	24	20	M18	1878	1882	90	10	4	M14X1.5	5	2080	414	50	0	551	678
1787/2650G2	2885	2650	100	2850	2700	48	48	M20	M20	2777	2781	80	10	6	ZG1/4in	12	2949.6	244	80	0	913	751

In this design, the gear teeth are located on the inner ring, allowing the gear mesh to occur inside the bearing. This configuration is more space-efficient, as it requires less installation space compared to external gear designs, making it suitable for applications where space is limited.

Technical Parameters

The following specifications are from a previous version of our catalog. If you require the latest data or custom configurations, please don’t hesitate to contact us directly.

Designations	Boundary dimensions			Bolt hole diameter						Structure dimensions						Gear parameters					Basic load ratings	Mass
	Boundary dimensions			Bolt hole diameter						Structure dimensions						Gear parameters					Basic load ratings	Mass
	D	d	H	D1	D2	n1	n2	⌀1	⌀2	D3	d1	H1	h	n3	ф3	m	da	Z	b	x	Coa
		mm		mm		n1	n2	mm		mm				n3	mm	m	mm	Z	mm	x	10⁴N	kg
2788/850K	976	850	80	-	-	-	-	-	-	916	919	80	-	-	-	2	916	456	20	0	174	117
3-646G2	1200	-	56	1170	1044	16	24	17.5	10.5	1088	1092	46	12	4	M8X1	6	985	166	44	0	210	84.1
2782/1000GK	1270	1000	100	1220	1050	24/2X2	24/2X2	17/M12	17/M12	1133	1137	85	15	2	M10X1	6	972.6	164	70	0	384	322
2787/1210G2	1530	1210	122	1480	1260	40	40	26	26	1368	1372	108	12	4	M10X1	10	1164	118	80	0	713	540
2787/1400GK	1715	1400	110	1660	1460	24	24	M20	M20	1558	1562	95	15	2	M12X1.25	6	1364.5	230	77	-0.35	365	545
2787/1400GK1	1715	1400	110	1660	1460	24	24	23	23	1558	1562	95	15	2	M10X1	6	1364.5	230	77	-0.35	365	545
2787/1440	1780	1440	100	1730	1494	48	48	22	M20	1618	1622	85	10	4	M12X1.25	8	1400	177	50	0	503	545
2787/1440G	1780	1440	100	1730	1494	48	48	22	M20	1618	1622	85	10	4	M12X1.25	8	1400	177	50	0	578	554
2768/1440G	1780	1440	104	1730	1494	48	48	22	M20	1613	1627	87	10	6	M12X1.25	8	1400	177	52	0	578	555
2787/1525G2	1875	1525	140	1815	1585	42	42	29	29	1698	1702	122	17	4	M12X1.25	16	1452.33	92	110	0.35	873	1019
2788/1712	2050	1790	112	2006	1847	36	72	22	22	1925	1926	92	12	18	M10X1	16	1712	108	100	-0.5	604	663
2789/2230	2488	2230	160	2445	2275	48	48	M20	M22	2337.5	2342.5	135	5	8	ZG1/4in	18	2144.25	121	145	0	1247	1114
2789/2240G2	2500	2240	140	2454	2280	56	56	M24	M24	2357.5	2362.5	115	5	8	M14X1.5	18	2145.6	121	125	0	856	1161
2789/2735	2990	2735	160	2954	2770	48	48	M20	M24	2835	2845	135	5	8	ZG1/4in	22	2624.62	121	144	0	1559	1457
2788/1712	2050	1790	112	2006	1847	36	72	22	22	1925	1926	92	12	18	M10X1	16	1712	108	100	-0.5	604	663
2789/2230	2488	2230	160	2445	2275	48	48	M20	M22	2337.5	2342.5	135	5	8	ZG1/4in	18	2144.25	121	145	0	1247	1114
2789/2240G2	2500	2240	140	2454	2280	56	56	M24	M24	2357.5	2362.5	115	5	8	M14X1.5	18	2145.6	121	125	0	856	1161
2789/2735	2990	2735	160	2954	2770	48	48	M20	M24	2835	2845	135	5	8	ZG1/4in	22	2624.62	121	144	0	1559	1457

This gearless design features smooth inner and outer rings without any gear teeth. It is typically used in applications where gear interaction is not needed, offering a simpler and more straightforward solution.

Technical Parameters

The following specifications are from a previous version of our catalog. If you require the latest data or custom configurations, please don’t hesitate to contact us directly.

Designations	Boundary dimensions			Bolt hole diameter						Structure dimensions						Basic load ratings	Mass
	Boundary dimensions			Bolt hole diameter						Structure dimensions						Basic load ratings	Mass
	D	d	H	D1	D2	n1	n2	⌀1	⌀2	D3	d1	H1	h	n3	⌀3	Coa	kg
		mm		mm		n1	n2	mm		mm				n3	mm	10⁴N
116752	480	260	60	444	296	16	16	14	14	360	380	60	-	-	-	75.4	55
116752K	480	260	60	-	-	-	-	-	-	360	380	60	-	-	-	75.4	58.6
176792	590	460	45	570	488	8	12	M10	10	518	542	45	-	-	-	62.6	35.9
176792K	590	460	45	570	488	12	12	10	10	518	542	45	-	-	-	62.6	36
176792K2M	590	460	45	570	488	12	8	10	10	526	534	45	-	-	-	94.4	30.8
1167/530	780	530	60	740	560	20	20	17	13	645	665	35	-	-	-	112	103
1167/560	720	560	36	690	590	12	12	14	12	638.5	641.5	33	3	-	-	70.8	40.3
1167/560K	720	560	36	690	590	12	32	M12	16	634	646	36	3	-	-	70.8	39.2
1167/560M	720	560	36	690	590	12	12	14	12	638.5	641.5	36	3	-	-	70.8	38.1
1168/560	780	560	60	-	-	-	-	-	-	645	668	60	3	-	-	224	103
11768/630	780	630	69	-	-	-	-	-	-	718	722	69	-	-	-	111	79.4
1167/700	900	700	36	860	740	12	12	M16	17	796	804	36	3	-	-	179	60
E787/760 G2	950	760	80	915	795	24	24	18	M16	853.5	856.5	71	9	4	M10X1	203	138
3-640	1000	775	64	948	802	24	12／12	M12	13/M12	878	882	49	15	2	M8X1	196	112
3-640K	1000	775	64	948	802	24	12／12	M12	13/M12	878	882	49	15	2	M8	196	112
787/800 G	1050	800	90	1012	838	30	30	20	20	923	927	76	16	3	M10X1	215	192
71769/850Y	1120	850	85	1074	924	12	12	M20	22	995	1010	85	-	-	-	151	248
71769/850G2K	1120	850	85	1074	924	12	12	17	22	999	1003	85	-	-	-	210	257
787/932G2	1200	932	120	1148	984	40	40	26	M24	1064	1068	100	20	4	G1/4in	349	328
787/960G2	1165	960	90	1135	1040	36	36	18	M16	1073	1077	78	14	6	M10X1	249	202
787/1000G2	1250	1000	100	1206	1044	12	12	18	M16	1123	1127	90	10	3	M10X1	540	283
787/1260G2	1509	1260	90	1465	1315	36	36	22	M20	1386	1389	70	14	2	ZG1/8in	378	274
71169/1400Y	1820	1400	136	1750	1470	24	24	35	35	1608	1612	136	-	4	M10X1	611	1114
71169/1400Y1	1820	1400	136	1750	1470	24	24	35	35	1608	1612	136	-	4	M10X1	1070	1120
787/1440G2	1780	1440	100	1730	1494	48	48	22	M20	1618	1622	85	15	4	M12X1.25	503	533
787/1628G2	1927	1628	130	1875	1680	36	36	26	M24	1774	1778	115	15	6	G1/4in	692	732
787/1700KM	2000	1700	150	1950	1750	24	24	21	21	1842	1858	130	20	4	M10X1	684	826
KDL 900-6	1050	832	56	1020	862	12	12	18	18	942	946	45	-	4	M6	227	52.5
LY-Q007	485	275	55	453	307	16	16	18	M16	381	386	50	5	4	M10X1	87.2	43.7
LY-Q007K	485	275	55	453	307	16	16	18	18	381	386	50	5	4	M10X1	87.2	43.7
LY-Q020	440	240	55	400	280	18	18	M20-7H	22	340	342	50	5	3	M10X1	78.2	34.7

Slewing bearing used in crane

Slewing bearing used in excavator

Slewing bearing used in stacker reclaimer

What material is used for Four-Point Contact Ball Slewing Bearings, and what surface treatment is applied?

Our slewing rings are manufactured using 42CrMo (42CrMo4), a high-strength, high-toughness alloy structural steel containing chromium and molybdenum—ideal for producing large-diameter slewing bearings. To enhance durability and corrosion resistance, we apply medium-frequency induction hardening on the bearing raceways.

Are these bearings suitable for construction machinery manufacturers?

Absolutely. Our Four-Point Contact Ball Slewing Bearings are widely used across industries, including construction machinery (cranes, excavators), wind power, port equipment, and even medical devices.

What if I have limited space for bearing installation—what type do you recommend?

This series includes three structural types:

With internal gear
With external gear
Without gear

For space-constrained applications, we recommend the internal gear version, as the gear meshing occurs within the bearing and requires less installation space than the external gear type.

What experience and certifications does your company have in this field?

Founded in 2005, Xinqianglian has over 20 years of experience in the research, manufacturing, and sales of large slewing bearings and wind power bearings. We are certified by major classification societies such as ABS, BV, DNV, KR, NK, CCS, and LR, and comply with ISO 9001, ISO 14001, and OHSAS 18001 standards, ensuring high-quality manufacturing and strict process control.