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Double-row ball slewing bearing

Double-row ball slewing bearing is a high-load slewing bearing product. It adopts a double-row steel ball rolling element design, including rolling elements of the same diameter and rolling elements of different diameters. It can simultaneously withstand large axial forces, radial forces and higher overturning moments. It has a compact structure and stable rotation.

Item	Specification / Material
Outer Diameter Range	300 mm ～ 10,000 mm
Ring Material	42CrMo / 50Mn / C45
Ball / Roller Material	GCr15
Cage Material	20 Steel or ZL102 Cast Aluminum Alloy
Spacer Material	Nylon 6 / Nylon 66
Raceway Hardness	HRC 55 – 62
Gear Type	Gearless, Internal Gear, External Gear
Delivery Time	10 – 30 Days

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Double-row ball slewing bearing

Double-row ball slewing bearing features

Design: Utilizing a unique double-row roller design, the upper and lower rows of rollers can be of the same or different diameters. Available in both integral and split configurations, this stable structure makes it suitable for low-speed, large-diameter rotational applications. High load capacity: Greater than single-row slewing bearings, capable of withstanding axial, radial, and tipping loads.

Manufacturing Process: Inner and outer rings are typically made of materials such as 42CrMo, 50Mn, and 45# steel, with a quenched and tempered hardness between 170HB and 340HB, ensuring durability and a long service life. Rolling elements are typically made of GCr15 or GCr15SiMn bearing steel, with a hardness of 58-62HRC. Cages are typically made of nylon, and seals are typically made of butyl rubber or fluororubber.

Double-row ball slewing bearing advantages

High load-bearing capacity: Double-row ball structure provides robust support under heavy loads.

Precise and stable: Evenly distributed balls ensure smooth rotation and strong vibration resistance.

Durable and reliable: High-quality alloy steel and heat-treated process ensure long service life.

Flexible installation: Multiple tooth profiles accommodate a variety of mechanical drive types.

Easy maintenance: Optimized sealing and lubrication reduce maintenance costs.

Double Row Ball Slewing Ring With External Gear

Bearing Model	Dimensions			Mounting Dimensions				Structural Dimension					Gear data					Weight(kg)
Bearing Model	Dmm	dmm	Hmm	D1mm	D2mm	n	φmm	D3mm	d1mm	n1	H1mm	hmm	bmm	x	Mmm	Demm	z
021.25.500	616	384	106	580	420	20	18	523	518	4	96	26	60	0.5	5	644	126	100
021.25.560	676	444	106	640	480	20	18	583	578	4	96	26	60	0.5	5	704	138	115
021.25.630	746	514	106	710	550	24	18	653	648	4	96	26	60	0.5	6	790.8	129	130
021.25.710	826	594	106	790	630	24	18	733	728	4	96	26	60	0.5	6	862.8	141	140
021.30.800	942	658	124	898	702	30	22	829	823	6	114	29	80	0.5	8	982.4	120	200
021.30.900	1042	758	124	998	802	30	22	929	923	6	114	29	80	0.5	8	1086.4	133	250
021.30.1000	1142	858	124	1098	902	36	22	1029	1023	6	114	29	80	0.5	10	1198	117	300
021.30.1120	1262	978	124	1218	1022	36	22	1148	1143	6	114	29	80	0.5	10	1318	129	340
021.40.1250	1426	1074	160	1374	1126	40	26	1286	1282	5	150	39	90	0.5	12	1497.6	122	580
021.40.1400	1576	1224	160	1524	1272	40	26	1436	1432	5	150	39	90	0.5	12	1641.6	134	650
021.40.1600	1776	124	160	1724	176	45	26	1636	1635	5	150	39	90	0.5	14	1845.2	129	750
021.40.1800	1976	1624	160	1924	1676	45	26	1836	1835	5	150	39	90	0.5	14	2055.2	144	820
021.50.2000	2215	1785	190	249	1851	48	33	2038	2035	8	178	47	120	0.5	16	2300.8	141	1150
021.50.2240	2455	2025	190	2389	2091	48	33	278	2275	8	178	47	120	0.5	6	2540.8	156	1500
021.50.2500	2715	2285	190	2649	2351	56	33	2538	2532	8	178	47	120	0.5	18	2804.4	153	1700
021.50.2800	3015	2585	190	2949	2651	56	33	2838	2832	8	178	47	120	0.5	18	3110.4	170	1900
021.60.3150	3428	2872	226	3338	2962	56	45	3198	3196	8	214	56	150	0.5	20	3536	174	3300
021.60.3550	3828	3272	226	3738	3362	56	45	3598	3596	8	214	56	150	0.5	20	3936	94	3700
021.60.4000	4278	3722	226	4188	3812	60	45	4048	4046	10	214	56	150	0.5	22	4395.6	197	4200
021.60.4500	4778	4222	226	4688	4312	60	45	4548	4546	10	214	56	150	0.5	22	4879.6	219	4700

Double Row Ball Slewing Ring With Inner Gear

Bearing Model	Dimensions			Mounting Dimensions				Structural Dimension					Gear data					Weight（kg)
Bearing Model	Dmm	dmm	Hmm	D1mm	D2mm	n	φmm	D3mm	d1mm	n1	H1mm	hmm	bmm	x	Mmm	Demm	z
023.25.500	616	384	106	580	420	20	18	482	477	4	96	26	60	0.5	5	257	72	100
023.25.560	676	444	106	640	480	20	18	542	537	4	96	26	60	0.5	5	417	84	115
023.25.630	746	514	106	710	550	24	18	612	607	4	96	26	60	0.5	6	482.4	81	130
023.25.710	826	594	106	790	630	24	18	692	687	4	96	26	60	0.5	6	560.4	94	140
023.30.800	942	658	124	898	702	30	22	777	771	6	114	29	80	0.5	8	619.2	78	200
023.30.900	1042	758	124	998	802	30	22	877	871	6	114	29	80	0.5	8	715.2	90	250
023.30.1000	1142	858	124	1098	902	36	22	977	971	6	114	29	80	0.5	10	814	82	300
023.30.1120	1262	978	124	1218	1022	36	22	1097	1091	6	114	29	80	0.5	10	924	93	340
023.40.1250	1426	1074	160	1374	1126	40	26	1215	1214	5	150	39	90	0.5	12	1012.8	85	580
023.40.1400	1576	1224	160	1524	1272	40	26	1365	1364	5	150	39	90	0.5	12	1156.8	97	650
023.40.1600	1776	1424	160	1724	1476	45	26	1565	1564	5	150	39	90	0.5	14	1349.6	97	750
023.40.1800	1976	1624	160	1924	1676	45	26	1765	1764	5	150	39	90	0.5	14	1545.6	111	820
023.50.2000	2215	1785	190	2149	1851	48	33	1965	1962	8	178	47	120	0.5	16	1702.4	107	1150
023.50.2240	2455	2025	190	2389	2091	48	33	2206	2202	8	178	47	120	0.5	16	1942.4	122	1500
023.50.2500	2715	2285	190	2649	2351	56	33	2465	2462	8	178	47	120	0.5	18	2203.2	123	1700
023.50.2800	3015	2585	190	2949	2651	56	33	2765	2762	8	178	47	120	0.5	18	2491.2	139	1900
023.60.3150	3428	2872	226	3338	2962	56	45	3104	3102	8	214	56	150	0.5	20	2768	139	3300
023.60.3550	3828	3272	226	3738	3362	56	45	3504	3502	8	214	56	150	0.5	20	3168	159	3700
023.60.4000	4278	3722	226	4188	3812	60	45	3954	3952	10	214	56	150	0.5	22	3616.8	165	4200
023.60.4500	4778	4222	226	4688	4312	60	45	4454	4452	10	214	56	150	0.5	22	4122.8	188	4700

Double Row Ball Slewing Ring Without Gear

Bearing Model	Dimensions			Mounting Dimensions				Structural Dimension					Weight(kg)
Bearing Model	Dmm	dmm	Hmm	D1mm	D2mm	n	φmm	D3mm	d1mm	n1	H1mm	hmm
020.25.500	616	384	106	580	420	20	18	482	477	4	96	26	100
020.25.560	676	444	106	640	480	20	18	542	537	4	96	26	115
020.25.630	746	514	106	710	550	24	18	612	607	4	96	26	130
020.25.710	826	594	106	790	630	24	18	692	687	4	96	26	140
020.30.800	942	658	124	898	702	30	22	777	771	6	114	29	200
020.30.900	1042	758	124	998	802	30	22	877	871	6	114	29	250
020.30.1000	1142	858	124	1098	902	36	22	977	971	6	114	29	300
020.30.1120	1262	978	124	1218	1022	36	22	1097	1091	6	114	29	340
020.40.1250	1426	1074	160	1374	1126	40	26	1215	1214	5	150	39	580
020.40.1400	1576	1224	160	1524	1272	40	26	1365	1364	5	150	39	650
020.40.1600	1776	1424	160	1724	1476	45	26	1565	1564	5	150	39	750
020.40.1800	1976	1624	160	1924	1676	45	26	1765	1764	5	150	39	820
020.50.2000	2215	1785	190	2149	1851	48	33	1965	1962	8	178	47	1150
020.50.2240	2455	2025	190	2389	2091	48	33	2206	2202	8	178	47	1500
020.50.2500	2715	2285	190	2649	2351	56	33	2465	2462	8	178	47	1700
020.50.2800	3015	2585	190	2949	2651	56	33	2765	2762	8	178	47	1900
020.60.3150	3428	2872	226	3338	2962	56	45	3104	3102	8	214	56	3300
020.60.3550	3828	3272	226	3738	3362	56	45	3504	3502	8	214	56	3700
020.60.4000	4278	3722	226	4188	3812	60	45	3954	3952	10	214	56	4200
020.60.4500	4778	4222	226	4288	4312	60	45	4454	4452	10	214	56	4700

Why choose LTZC bearings？

A Trusted Brand

With over 20 years of experience in bearing R&D, our global service network covers countries such as India and Russia, ensuring fast and efficient technical support for all bearing issues and ensuring the smooth operation of your equipment.

High-Quality Bearings

Advanced CNC production equipment and manufacturing processes guarantee bearing precision and durability. LTZC bearings also carry third-party testing reports to ensure they meet international standards.

Product Range

LTZC products include slewing bearings, slewing drives, precision thin-wall bearings, and custom bearings. They are widely used in cranes, heavy machinery, and port machinery, maintaining stable performance under harsh operating conditions.

Custom Bearings

Our experienced technical team provides customized bearing solutions for complex applications. Services include load analysis and bearing selection, service life calculations, 3D design, and engineering drawings.

LTZC slewing bearing manufacturer

LTZC Bearings is a trusted bearing manufacturer specializing in slewing bearings, slewing drives, and precision bearings. With advanced CNC machining equipment, comprehensive heat treatment, and strict quality control, our products meet international standards and are ISO certified.

We export high-quality industrial bearings to Germany, India, Russia, and Canada, earning over 10,000 satisfied customer feedbacks. With strong OEM and ODM capabilities, LTZC provides fast delivery and custom bearing solutions for heavy machinery, construction, and automation industries.

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Technology support

Pre-sales service

After-sales service

Installation & maintenance

Selection guide

Customized bearing solutions

LTZC is a professional slewing bearing manufacturer，providing a full range of custom bearing services, including slewing rings, non-standard bearings, large bearings, thin-section bearings, crossed roller bearings, and four-point contact ball bearings. Whether the requirements are special sizes, materials, or complex operating conditions, we can provide customers with the optimal solution through professional R&D and precision manufacturing.

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Feel free to get a quote on the latest price of slewing bearings for any largeapplications, please include your application, needs, requirements and otherdetails.

Slewing Bearings

Double-row ball slewing bearing

Brochure

Double-row ball slewing bearing

Double-row ball slewing bearing features

Double-row ball slewing bearing advantages

Why choose LTZC bearings？

A Trusted Brand

High-Quality Bearings

Product Range

Custom Bearings

LTZC slewing bearing manufacturer

Technology support

Pre-sales service

After-sales service

Installation & maintenance

Selection guide

Customized bearing solutions

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