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External-tooth four-point-contact ball slewing bearing

Name: External-tooth four-point-contact ball slewing bearing
Brand: Luoyang Jiuliang Bearing Co., Ltd.
Availability: InStock

Product Description:

An external-tooth four-point-contact ball slewing bearing is a specialized rolling bearing commonly used in large rotating equipment and mechanical systems that require high load-carrying capacity and rotational freedom. These bearings feature an external gear ring, typically configured as a gear–rack assembly, which interfaces with an external drive system to enable rotation.

Phone: 86-13939909508

Email: lyjiuliang@foxmail.com

Product Inquiry

External gear ring:

This is one of the distinctive features of an external‑tooth four‑point contact ball slewing bearing. The external gear ring typically consists of a gear‑rack structure, enabling connection to an external drive system—such as an electric motor, hydraulic system, or gearbox—to facilitate the bearing’s rotation. The design of the external gear ring allows for precise positioning and control of the bearing’s rotational motion.

Inner Ring:

The inner ring is located inside the outer gear ring and typically consists of two half-rings. The gap between these half-rings permits the bearing to rotate.

Roller arrangement:

Connected to the inner ring are cross‑arranged rollers. These rollers are distributed between the inner and outer rings to support both axial and radial loads. The roller arrangement enables the bearing to withstand complex loading conditions and provides a high load‑carrying capacity.

Sealing device:

To protect the bearing from contamination and moisture, external-tooth four-point-contact ball slewing bearings are typically equipped with sealing devices.

Product Specifications

External-tooth four-point-contact ball slewing bearing model specifications
Model number	Inner diameter (mm)	Outer diameter (mm)	Height (mm)	Modulus	Number of teeth	Axial Dynamic Load (kN)	Axial static load (kN)	Radial Dynamic Load (kN)	Radial static load (kN)	Weight (kg)	Radial clearance	Axial clearance
VA140188-V	135	259.36	35	4	62	118	410	77	185	7.5	0.03-0.1	0.05-0.2
VA160235-N	171	318.6	40	4	78	153	345	101	156	13	0.04-0.16	0.07-0.26
VA160302-N	238	384	32	4	94	168	445	110	200	14	0.04-0.16	0.07-0.26
VA250309-N	235	408.4	60	5	80	325	650	215	295	29.5	0.06-0.25	0.1-0.41
VSA250755-N	655	898	80	9	98	460	2250	300	1010	128	0.03-0.13	0.05-0.24
VSA250855-N	755	997	80	9	109	485	2550	315	1150	145	0.03-0.13	0.05-0.24
VSA250955-N	855	1096	80	9	120	500	2850	330	1280	155	0.03-0.13	0.05-0.24
VSA251055-N	955	1198	80	10	118	520	3150	340	1410	171	0.03-0.13	0.05-0.24
VLA200414-N	304	503.3	56	5	99	169	295	111	110	29.5
VLA200544-N	434	640.3	56	6	105	188	385	123	145	41.5
VLA200644-N	534	742.3	56	6	122	200	455	131	171	48.5
VLA200744-N	634	838.1	56	6	138	211	530	138	198	54.5
VLA200844-N	734	950.1	56	8	117	222	600	145	224	65.5
VLA200944-N	834	1046.1	56	8	129	231	670	151	250	71.5
VLA201094-N	984	1198.1	56	8	148	244	770	160	290	83.5
VSA200414-N	342	503.3	56	5	99	169	560	111	248	31
VSA200544-N	472	640.3	56	6	105	188	740	123	325	43
VSA200644-N	572	742.3	56	6	122	200	880	131	385	52
VSA200744-N	672	838.1	56	6	138	211	1010	138	445	59
VSA200844-N	772	950.1	56	8	117	222	1150	145	510	71
VSA200944-N	872	1046.1	56	8	129	231	1280	151	570	77
VSA201094-N	1022	1198.1	56	8	148	244	1490	160	660	91