The ZZ single row cross roller slewing bearing provides exceptional stability and precision. Its cylindrical rollers arranged at 90° in a cross pattern increase rigidity and allow the bearing to handle axial, radial, and tilting moment loads simultaneously. This makes it suitable for excavators, cranes, drilling rigs, and aerial work platforms where precise rotation and load-bearing capacity are critical.

			Dimensions			Fixing Holes						Structure Size					Gear data		External gear data		Internal gear data
Code		Curva	D (mm)	d (mm)	H (mm)	D1 (mm)	D2 (mm)	dn1 dn2 (mm)	dm1 dm2 (mm)	L (mm)	n	n1	D3 (mm)	d1 (mm)	H1 (mm)	h (mm)	b (mm)	m (mm)	da (mm)	z	da (mm)	z
11.25.500		1	602	398	75	566	434	18	M16	32	20	4	498	502	65	10	60	5 6	629 628.8	123 102	367 368.4	74 62
11.25.560		2	662	458	75	626	494	18	M16	32	20	4	558	562	65	10	60	5 6	689 688.8	135 112	427 428.4	86 72
11.25.630		3	732	528	75	696	564	18	M16	32	24	4	628	632	65	10	60	6 8	772.8 774.4	126 94	494.4 491.2	83 62
11.25.710		4	812	608	75	776	644	18	M16	32	24	4	708	712	65	10	60	6 8	850.8 854.4	139 104	572.4 571.2	96 72
11.28.800		5	922	678	82	878	722	22	M20	40	30	6	798	802	72	10	65	8 10	966.4 968	118 94	635.2 634	80 64
11.28.900		6	1022	778	82	978	822	22	M20	40	30	6	898	902	72	10	65	8 10	1062.4 1068	130 104	739.2 734	93 74
11.28.1000		7	1122	878	82	1078	922	22	M20	40	36	6	998	1002	72	10	65	10 12	1188 1185.6	116 96	824 820.8	83 69
11.28.1120		8	1242	998	82	1198	1042	22	M20	40	36	6	1118	1122	72	10	65	10 12	1298 1305.6	127 106	944 940.8	95 79
11.32.1250		9	1390	1110	91	1337	1163	26	M24	48	40	5	1248	1252	81	10	75	12 14	1449.6 1453.2	118 101	1048.8 1041.6	88 75
11.32.1400		10	1540	1260	91	1487	1313	26	M24	48	40	5	1398	1402	81	10	75	12 14	1605.6 1607.2	131 112	1192.8 1195.6	100 86
11.32.1600		11	1740	1460	91	1687	1513	26	M24	48	45	5	1598	1602	81	10	75	14 16	1817.2 1820.8	127 111	1391.6 1382.4	100 87
11.32.1800		12	1940	1660	91	1887	1713	26	M24	48	45	5	1798	1802	81	10	75	14 16	2013.2 2012.8	141 123	1573.6 1574.4	113 99
11.40.2000		13	2178	1825	112	2110	1891	33	M30	60	48	8	1997	2003	100	12	90	16 18	2268.8 2264.4	139 123	1734.4 1735.2	109 97
11.40.2240		14	2418	2065	112	2350	2131	33	M30	60	48	8	2237	2243	100	12	90	16 18	2492.8 2498.4	153 136	1990.4 1987.2	125 111
11.40.2500		15	2678	2325	112	2610	2391	33	M30	60	56	8	2497	2503	100	12	90	18 20	2768.4 2776	151 136	2239.2 2228	125 112
11.40.2800		16	2978	2625	112	2910	2691	33	M30	60	56	8	2797	2803	100	12	90	18 20	3074.4 3076	168 151	2527.2 2528	141 127
11.50.3150		17	3376	2922	134	3286	3014	45	M42	84	56	8	3147	3153	122	12	110	20 22	3476 3471.6	171 155	2828 2824.8	142 129
11.50.3550		18	3776	3322	134	3686	3414	45	M42	84	56	8	3547	3553	122	12	110	20 22	3876 3889.6	191 174	3228 3220.8	162 147
11.50.4000		19	4226	3772	134	4136	3864	45	M42	84	60	10	3997	4003	122	12	110	22 25	4329.6 4345	194 171	3660.8 3660	167 147
11.50.4500		20	4726	4272	134	4636	4364	45	M42	84	60	10	4497	4503	122	12	110	22 25	4835.6 4845	217 191	4166.8 4160	190 167

Compact and Strong

The compact design fits into tight spaces without sacrificing strength. High stiffness reduces deformation under heavy loads or sudden shocks. Machinery such as truck cranes, shield tunneling machines, and construction excavators operates more efficiently thanks to the bearing’s stable performance.

Durable Materials and Advanced Processing

ZZ manufactures this cross roller bearing from premium alloy steel. Through forging, quenching, and precision grinding, the bearing achieves long fatigue life and excellent wear resistance. Optimized raceway geometry ensures even load distribution, reducing stress points and extending service life.

Sealing and Maintenance

The bearing features high-quality sealing systems to block dust, mud, and moisture. Integrated lubrication channels make maintenance easy and fast. Smooth rotation continues over long cycles, reducing downtime. This reliability makes the ZZ slewing bearing ideal for continuous operation in construction, mining, tunneling, and port equipment.

Wide Applications

The cross roller bearing supports excavators, cranes, aerial platforms, shield tunneling machines, and port handling equipment. It also suits wind turbine yaw and pitch systems, where precision and stability are crucial. Engineers trust the bearing to deliver accurate rotation, consistent positioning, and long-term durability.

ZZ Brand Reliability

ZZ slewing bearings meet international quality standards. Strict quality control and decades of manufacturing experience ensure consistent performance. Clients worldwide rely on ZZ single row cross roller slewing bearings for long service life, precision, and reduced maintenance costs in heavy machinery applications.

Summary

The ZZ single row cross roller slewing bearing combines precision, durability, and compact design. Its cross roller layout supports multiple load types, while high-quality materials, sealing systems, and easy maintenance guarantee long-term performance. It offers a dependable solution for excavators, cranes, drilling rigs, tunneling machines, and wind energy systems.

The post Single Row Cross Roller Slewing Bearing for Excavators and Cranes appeared first on ZZ.

ZZ double row slewing bearings feature high-strength alloy steel construction, advanced heat treatment, and precision-ground raceways. The dual-row design distributes loads more evenly, reducing wear and extending service life. Optional gear teeth configurations allow seamless integration with hydraulic or electric drive systems.

Sealed designs protect against dust, mud, and water, while internal lubrication ensures smooth operation with minimal maintenance. The robust structure maintains stability even under shock loads common in mining, construction, or port machinery.

Widely used in aerial work platforms, rotary drilling rigs, and shield tunneling machines, these bearings deliver precision, durability, and confidence in every rotation. ISO-certified production and rigorous quality control guarantee ZZ bearings meet global standards for engineering machinery.

The post ZZ Double Row Ball Slewing Bearing for Excavators appeared first on ZZ.

Custom Design:

Tailored Solutions: Designed to meet unique specifications, ensuring optimal performance for specialized applications.
Enhanced Performance: Can integrate specific features or modifications that standard designs may not accommodate, improving efficiency and longevity.
Flexibility: Allows for adjustments in size, torque, and mounting options based on operational requirements.

Standard Design:

Cost-Effective: Generally less expensive due to mass production and reduced engineering costs.
Quick Availability: Standard models are readily available, facilitating faster project timelines.
Proven Reliability: Tested designs with established performance metrics in various applications, offering peace of mind.
Ultimately, if your project has unique requirements or challenges, a custom slewing drive may be the best choice. However, for more common applications, standard designs can provide a reliable and efficient solution.

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Since it is gearless, the rotation is driven externally, often by a separate motor or gear system, allowing for greater design flexibility and customization in different applications. Despite its lighter construction, the bearing still offers reliable support for both axial and radial loads, ensuring precise and efficient movement. Gearless light series flange type slewing bearings are ideal for scenarios that require smooth, low-friction rotation with minimal maintenance, especially in light to moderate load conditions.

The post Gearless light series flange type slewing bearing appeared first on ZZ.

The flange structure simplifies installation, allowing for quick integration into mechanical systems, ensuring flexibility and efficiency in light-duty applications. Although it is mainly used for light movements, it still provides precise rotation and motion control under low loads, ensuring reliability and stability in equipment operation.

The post Internal gear flange type slewing bearing appeared first on ZZ.

APPLICATIONS:
ZZ slewing bearings are used in various applications, for example:

• agricultural trailers;
• self-winding hose reels for watering;
• atomizers for fertilisation with trailer;
• light dust collectors;

	ØA	ØB	ØC	ØD	H	G	ØS	Axial Capacity	Weight
Model	mm	mm	mm	mm	mm	mm	mm	Kg	Kg
FNO-W.0300.55	300	300	225	200	55	5	12,5	500	5
FNO-W.0400.55	400	400	321	300	55	5	12,5	750	7
FNO-W.0500.55	500	500	421	400	55	5	12,5	1000	9
FNO-W.0500.65	500	500	410	388	65	8	12,5	1000	15
FNO-W.0600.65	600	600	510	486	65	8	12,5	1500	20
FNO-W.0650.65	650	650	560	536	65	8	12,5	1600	22
FNO-W.0700.65	700	700	610	587	65	8	14	2000	24
FNO-W.0750.65	750	750	660	636	65	8	14	2100	26
FNO-W.0800.65	800	800	710	688	65	8	14	2500	27
FNO-W.0850.65	850	850	760	728	65	8	14	3000	29
FNO-W.0900.65	900	900	810	786	65	8	14	3500	32
FNO-W.0950.65	950	950	860	837	65	8	14	3500	33
FNO-W.1000.65	1000	1000	910	888	65	8	14	4000	35
FNO-W.1050.65	1050	1050	960	938	65	8	14	4500	37
FNO-W.1100.65	1100	1100	1010	988	65	8	14	4500	40
FNO-W.1000.70	1000	1000	905	875	70	8	14	4500	37
FNO-W.1100.70	1100	1100	1000	975	70	8	16	6000	41
FNO-W.1200.70	1200	1190	1095	1075	70	8	16	10000	45
FNO-W.0900.80	890	895	795	766	80	8	16	5000	36
FNO-W.1000.80	1010	1015	916	888	80	8	16	6000	42
FNO-W.1100.80	1100	1105	1005	976	80	8	16	6500	45
FNO-W.1000.90	1000	1008	889	856	90	10	20	8000	60
FNO-W.1100.90	1100	1100	980	948	90	10	20	10000	65

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Typically, manufacturers offer customized designs, working with specific dimensions and performance needs for sectors like solar trackers, cranes, wind turbines, and more. Many manufacturers also focus on precision engineering, high-quality materials, and offering reliable after-sales service to ensure long-term performance and customer satisfaction.

ZZ is a professional slewing drive gearbox manufacturer based in China, renowned for its expertise in delivering reliable and efficient rotational solutions. Specializing in the production of high-quality slewing drives and gearboxes, ZZ serves a wide range of industries, including solar tracking systems, construction machinery, wind turbines, and industrial automation. Their products are characterized by robust engineering, precision, and long-lasting durability, making them a preferred choice for applications requiring smooth and accurate rotational movement. With a commitment to innovation and quality, ZZ ensures their slewing drives meet international standards and the specific demands of clients worldwide.

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