Product Details

The single-row ball type gearless flange slewing bearing is an essential component in various industrial applications, providing a reliable and efficient solution for rotational movement. Unlike traditional slewing bearings, the gearless design eliminates the complexity of gears, offering a more simplified, low-maintenance alternative. The flange mounting system enhances the overall strength and stability, allowing for easy installation and increased support during operation.

With a design optimized for durability, the single-row ball slewing bearing features precision-made steel components that are resistant to wear and corrosion. This makes it suitable for use in harsh environments, where the bearing must endure heavy loads, high temperatures, and exposure to elements like water and dust. The ball raceway minimizes friction, ensuring smooth rotation even under challenging conditions.

Specification

The single-row ball type gearless flange slewing bearing is a highly versatile and durable product designed to meet the demands of various industries, from construction and heavy machinery to marine applications. This type of slewing bearing features a robust, flange-mounted design that enhances its overall stability and ease of installation. It is ideal for applications where space constraints exist and a reliable, cost-effective solution is required without the complexity of gear mechanisms.

A single-row ball slewing bearing consists of an outer ring, an inner ring, and a ball raceway. The single-row ball configuration ensures optimal load distribution, enhancing the bearing’s efficiency and performance. The absence of gears in this design simplifies the structure, making it less prone to failure and maintenance, resulting in reduced operational downtime.

One of the key benefits of this type of slewing bearing is its flange mounting system. The flange structure not only simplifies the assembly process but also provides an additional layer of strength and support, making it suitable for applications where high axial and radial loads are common. Whether used in cranes, excavators, or other rotating machinery, the single-row ball type gearless flange slewing bearing provides smooth, reliable rotation even under heavy stress.

INA	Rothe Erde	TG	D	d	H	D1	n1	Φ1	d2	H1	d1	Weigt kg
	230.20.0400.013		518	304	56	490	8	18		45.5	415.5	23.4
	230.20.0400.503		518	304	56	490	16	18		45.5	415.5	23
		SD.505.20.00.C	518	304	56	490	8	18	375	46	415.5	24.3
VLU200414ZT			518	304	56	490	8	18	369.5	47.5	415.5	26.5
VLU200414			518	304	56	490	8	18		47.5	415.5	23.5
	230.21.0475.013		517	305	56	490	8	18		45.5	415.5	23.4
	230.20.0500.013		648	434	56	620	10	18		45.5	545.5	31
	230.20.0500.503		648	434	56	620	20	18		45.5	545.5	30.4
		SD.650.20.00.C	648	434	56	620	10	18	505	46	545.5	32
	230.20.0500.013		648	434	56	620	20	18	505	45.5	545.5	30.4
VLU200544ZT			648	434	56	620	10	18	499.5	47.5	545.5	35.4
VLU200544			648	434	56	620	10	18		47.5	545.5	31
		SD.650.20.00.C	648	434	56	620	10	18	505	46	545.5	31
	230.21.0575.013		647	435	56	620	10	18		45.5	545.5	31
	230.20.0600.013		748	534	56	720	12	18		45.5	645.5	36.4
	230.20.0600.503		748	534	56	720	24	18		45.5	645.5	35.799999999999997
		SD.750.20.00.C	748	534	56	720	12	18	605	46	645.5	38
VLU200644ZT			748	534	56	720	12	18	602	47.5	645.5	38
VLU200644ZT			748	534	56	720	12	18	599.5	47.5	645.5	42
VLU200644			748	534	56	720	12	18		47.5	645.5	36.5
		SD.750.20.00.C	748	534	56	720	12	18	605	46	645.5	36.5
	230.21.0675.013		747	535	56	720	12	18		45.5	645.5	36.4
		SD.750.20.00.C	746	536	56	720	12	18	605	46	645.5	38
	230.20.0700.013		848	634	56	820	12	18		45.5	745.5	42.8
	230.20.0700.503		848	634	56	820	24	18		45.5	745.5	42.2
VLU200744ZT			848	634	56	820	12	18	699.5	47.5	745.5	45
VLU200744			848	634	56	820	12	18		47.5	745.5	42.5
	230.21.0775.013		847	635	56	820	12	18		45.5	745.5	42.8
	230.20.0800.013		948	734	56	920	14	18		45.5	845.5	47.8
	230.20.0800.503		948	734	56	920	28	18		45.5	845.5	47.1
		SD.950.20.00.C	948	734	56	920	14	18	805	46	845.5	50
VLU200844ZT			948	734	56	920	14	18	799.5	47.5	845.5	53.8
VLU200844			948	734	56	920	14	18		47.5	845.5	48
	230.21.0875.013		947	735	56	920	14	18		45.5	845.5	47.8
		SD.950.20.00.C	946	736	56	920	14	18	805	46	845.5	50
	280.30.0900.013		1100	805	90	1060	30	22		71	953.5	131
	280.30.0900.013		1100	805	90	1060	30	22		71	953.5	131
VLU 300955			1100	805	90	1060	30	22		71	953	135
		SD.1100.32.00.C	1100	805	90	1060	30	22	893	71	955	131
	280.30.0975.013		1098	807	90	1060	30	22		71	953.5	131
	230.20.0900.013		1048	834	56	1020	16	18		45.5	945.5	53.1
	230.20.0900.503		1048	834	56	1020	32	18		45.5	945.5	52.3
		SD.1050.20.00.C	1048	834	56	1020	16	18	905	46	945.5	55.6
VLU200944ZT			1048	834	56	1020	16	18	899.5	47.5	945.5	61
VLU200944			1048	834	56	1020	16	18		47.5	945.5	54
	230.21.0975.013		1047	835	56	1020	16	18		45.5	945.5	53.1
	280.30.1000.013		1200	905	90	1160	30	22		71	1053.5	145
VLU301055			1200	905	90	1160	30	22		71	1053	149
		SD.1200.32.00.C	1200	905	90	1160	30	22	993	71	1055	145
	280.30.1075.013		1198	907	90	1160	30	22		71	1053.5	145
	230.20.1000.013		1198	984	56	1170	16	18		45.5	1095.5	61.9
	230.20.1000.503		1198	984	56	1170	32	18		45.5	1095.5	61.1
		SD.1200.20.00.C	1198	984	56	1170	16	18	1055	46	1095.5	62.8
VLU 201094			1198	984	56	1170	16	18		47.5	1095.5	62.5
		SD.1200.20.00.C	1198	984	56	1170	16	18	1055	46	1095.5	62
	230.21.1075.013		1197	985	56	1170	16	18		45.5	1095.5	61.9
	280.30.1100.013		1300	1005	90	1260	36	22		71	1153.5	159
VLU 301155			1300	1005	90	1260	36	22		71	1153	164
		SD.1300.32.00.C	1300	1005	90	1260	36	22	1093	71	1155	159
	280.30.1175.013		1298	1007	90	1260	36	22		71	1153.5	159
	280.30.1200.013		1400	1105	90	1360	42	22		71	1253.5	172
VLU 301255			1400	1105	90	1360	42	22		71	1253	177
		SD.1400.32.00.C	1400	1105	90	1360	42	22	1193	71	1255	172
	280.30.1275.013		1398	1107	90	1360	42	22		71	1253.5	172
	280.30.1300.013		1500	1205	90	1460	42	22		71	1353.5	186
VLU 301355			1500	1205	90	1460	42	22		71	1353	191
		SD.1500.32.00.C	1500	1205	90	1460	42	22	1293	71	1355	186
	280.30.1375.013		1498	1207	90	1460	42	22		71	1353.5	186
	280.30.1400.013		1600	1305	90	1560	48	22		71	1453.5	200
	280.30.1400.013		1600	1305	90	1560	48	22	1393	71	1456.5	200
VLU 301455			1600	1305	90	1560	48	22		71	1453	206
		SD.1600.32.00.C	1600	1305	90	1560	48	22	1393	71	1455	200
	280.30.1475.013		1598	1307	90	1560	48	22		71	1453.5	200

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

1. What types of slewing bearings does ZZ Slewing Bearing provide?

ZZ Slewing Bearing supplies a full range of slewing bearings to meet different industrial needs:

Single row four point contact slewing bearings Application: medium loads, precise rotation.
Double row ball bearings Application: higher radial and axial loads.
Cross roller bearings –Application: high rigidity, suitable for robots and machining centers.
Three row roller bearings – Application: extreme loads in heavy equipment.
Ball combine roller bearings –Application: precise rotational adjustment applications.
Customized bearings – tailored for specific equipment requirements.

2. How do I choose the right bearing for my application?

Typical selection parameter for ZZ clients:

Load type: axial, radial, and tilting moment.

Rotation RPM: ensures long service life.

Installation space & mounting dimensions: inner/outer ring diameter, bolt circle.

Precision & rigidity requirements: critical for cranes, excavators, and robots.

ZZ engineers provide professional selection guidance according to your equipment and drawings.

3. What materials does ZZ Slewing Bearing use for slewing bearings?

ZZ Slewing Bearing selects materials for strength, wear resistance, and long-term durability:

Slewing ring: 42CrMo, 50Mn, C45N, 40CrNiMo, C48E.

Special forging spare parts: carburized/hardened steels for gear teeth (20CrMnTi, 18CrNiMo7‑6).

Corrosion resistant: SS 304, 316L, duplex stainless steel.

Surface treatments: heat treatment, quenching, carburizing, induction hardening, and surface coating(Four-Layer Packing, Strong Anti-Rust Oil, Black Oxide Treatment, Jet Black Paint Finish, Hot-Dip Galvanizing (CGL), Electro-Galvanizing (EGL), Hot-Dip Galvanizing + Paint Finish)

4. How can ZZ Slewing Bearing achieve maximum service life?

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

5. What causes abnormal noise or vibration in bearings?

Typical factors observed by ZZ engineers:

Insufficient or incorrect lubrication.
(dust, metal particles) in raceways.
Rolling element or track damage.
Uneven mounting surfaces or misalignment.
Incorrect bolt torque(below grade 8.8) or preloading.

6. What are lead times and lifetime guarantee?

In-stock: 3–7 days.

Custom: 2–6 weeks depending on size, load, and precision.

Warranty: 1 year

Lifetime Free Spare Parts: Glue, seals, steel ball

7. Does ZZ provide installation and technical support?

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

8. How do ZZ Slewing Bearing differ from competitors?

Full range of materials and heat treatments for various load conditions.

High precision and strict quality inspection standards.

Engineering support before and after delivery.

Customization to exact equipment requirements.

Proven performance in cranes, excavators, robotics, wind turbines, and heavy machinery etc.

ZZ Slewing Bearing (Shanghai) Co., Ltd

Leading Slew Drive & Slewing Bearing Manufacturer in China.

ZZ products are applied globally in solar tracking systems, wind power systems, satellite communications, and numerous other globally connected industries.