VSA20/VSI20/VSU20 Series Four Point Contact Ball Slewing Bearing

Four Point Contact Ball Slewing Bearing(VSA20/VSI20/VSU20 Series) (VSA 20 Series)

INA Four Point Contact Bearings Series VSA 20（External Gear Teeth Type）

LYNBC four point contact bearings series VSA20 are units comprising inner and inner rings with a closing plug and securing dowel, rolling elements, spacers, contact seals and lubrication nipples,with gear teeth on the outer ring. It has bearing inner rings with through holes and bearing outer rings threaded holes for fixing screws. Four point contact bearings can support axial, radial and tilting moment loads, but cannot be subjected to load as high as crossed roller bearings.

▲ The design’s of all these four point contact bearings series VSA20 are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC technical center if you need any assistance in this area.

Designation	No. ¹⁾	Dimension						Fixing holes				Gear Data			Tooth force		Basic load ratings				Mass (kg)
		D_a	D_i_ZT²⁾	d_i	D_i	d_a	d_i_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	do	m	z	F_{z norm} (kN)	F_{z max} (kN)	axial		radial
		D_a	D_i_ZT²⁾	d_i	D_i	d_a	d_i_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	do	m	z	F_{z norm} (kN)	F_{z max} (kN)	C_a (kN)	C_oa (kN)	C_r (kN)	C_0r (kN)
VSA 20 0414 N	①	503.3	417	342^+0.5	415.5^+0.5	412.5_-0.5	344	455	368	20	24	495	5	99	15.9	23.6	169	560	111	248	31
VSA 20 0544 N	②	640.3	547	472^+0.5	545.5^+0.5	542.5_-0.5	474	585	498	28	32	630	6	105	21.3	31.5	188	740	123	325	43
VSA 20 0644 N	③	742.3	647	572^+0.6	645.5^+0.6	642.5_-0.6	574	685	598	32	36	732	6	122	21.3	31.5	200	880	131	385	52
VSA 20 0744 N	④	838.1	747	672^+0.6	745.5^+0.6	742.5_-0.6	674	785	698	36	40	828	6	138	21.3	31.5	211	1010	138	445	59
VSA 20 0844 N	⑤	950.1	847	772^+0.6	845.5^+0.6	842.5_-0.6	774	885	798	36	40	936	8	117	28.3	42	222	1150	145	510	71
VSA 20 0944 N	⑥	1046.1	947	872^+0.7	945.5^+0.7	942.5_-0.7	874	985	898	40	44	1032	8	129	28.3	42	231	1280	151	570	77
VSA 20 1094 N	⑦	1198.1	1097	1022^+0.7	1095.5^+0.7	1092.5_-0.7	1024	1135	1048	44	48	1184	8	148	28.3	42	244	1490	160	660	91

Four Point Contact Ball Slewing Bearing(VSA20/VSI20/VSU20 Series) (VSI20 Series)

INA Four Point Contact Bearings Series VSI 20（Internal Gear Teeth Type）

LYNBC four point contact bearing series VSI 20 are units comprising inner and outer rings with a closing plug and securing dowel, rolling elements, spacers, contact seals and lubrication nipples, with gear teeth on the inner ring. It has bearing outer rings with through holes and bearing inner rings threaded holes for fixing screws. Four point contact bearings can support axial, radial and tilting moment loads, but cannot be subjected to load as high as crossed roller bearings.

▲ The design’s of all these Four Point contact bearings series VSI 20 are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC technical center if you need any assistance in this area.

Designation	No. ¹⁾	Dimension						Fixing holes				Gear Data			Tooth force		Basic load ratings				Mass (kg)
		D_a	D_a_ZT²⁾	d_i	D_i	d_a	d_a_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	do	m	z	F_{z norm} (kN)	F_{z max} (kN)	axial		radial
		D_a	D_a_ZT²⁾	d_i	D_i	d_a	d_a_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	do	m	z	F_{z norm} (kN)	F_{z max} (kN)	C_a (kN)	C_oa (kN)	C_r (kN)	C_0r (kN)
VSI 20 0414 N	①	486_-0.5	484	325	415.5^+0.5	412.5_-0.5	411	460	375	24	24	335	5	67	17.7	26.2	169	560	111	248	31
VSI 20 0544 N	②	616_-0.5	614	444	545.5^+0.5	542.5_-0.5	541	590	505	32	32	456	6	76	23.7	35	188	740	123	325	42
VSI 20 0644 N	③	716_-0.6	714	546	645.5^+0.6	642.5_-0.6	641	690	605	36	36	558	6	93	23.7	35	200	880	131	385	50
VSI 20 0744 N	④	816_-0.6	814	648	745.5^+0.6	742.5_-0.6	741	790	705	40	40	660	6	110	23.7	35	211	1010	138	445	58
VSI 20 0844 N	⑤	916_-0.6	914	736	845.5^+0.6	842.5_-0.6	841	890	805	40	40	752	8	94	31.4	46.7	222	1150	145	510	69
VSI 20 0944 N	⑥	1016_-0.7	1014	840	945.5^+0.7	942.5_-0.7	941	990	905	44	44	856	8	107	31.4	46.7	231	1280	151	570	76
VSI 20 1094 N	⑦	1166_-0.7	1164	984	1095.5^+0.7	1092.5_-0.7	1091	1140	1055	48	48	1000	8	125	31.4	46.7	244	1490	160	660	91

Four Point Contact Ball Slewing Bearing(VSA20/VSI20/VSU20 Series) (VSU20 Series)

INA Four Point Contact Bearings Series VSU 20（Without Gear Teeth Type）

LYNBC four point contact bearing series VSU 20 are units comprising inner and outer rings with a closing plug and securing dowel, rolling elements, spacers, contact seals and lubrication nipples. It has bearing outer rings and inner rings with through holes. Four Point Contact Bearings can support axial, radial and tilting moment loads, but cannot be subjected to load as high as crossed roller bearings.

▲ The design’s of all these four point contact bearings series VSU 20 are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC technical center if you need any assistance in this area.

Designation	No. ¹⁾	Dimension						Fixing holes				Basic load ratings				Mass (kg)
		D_a	D_a_ZT²⁾	d_i	D_i	d_a	d_i_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	axial		radial
		D_a	D_a_ZT²⁾	d_i	D_i	d_a	d_i_ZT²⁾	L_a	L_i	n_a³⁾	n_i³⁾	C_a (kN)	C_oa (kN)	C_r (kN)	C_0r (kN)
VSU 20 0414	①	486_-0.5	484	342^+0.5	415.5^+0.5	412.5_-0.5	344	460	368	24	24	169	560	111	248	29
VSU 20 0544	②	616_-0.5	614	472^+0.5	545.5^+0.5	542.5_-0.5	474	590	498	32	32	188	740	123	325	37
VSU 20 0644	③	716_-0.6	714	572^+0.6	645.5^+0.6	642.5_-0.6	574	690	598	36	36	200	880	131	385	44
VSU 20 0744	④	816_-0.6	814	672^+0.6	745.5^+0.6	742.5_-0.6	674	790	698	40	40	211	1010	138	445	52
VSU 20 0844	⑤	916_-0.6	914	772^+0.6	845.5^+0.6	842.5_-0.6	774	890	798	40	40	222	1150	145	510	60
VSU 20 0944	⑥	1016_-0.7	1014	872^+0.7	945.5^+0.7	942.5_-0.7	874	990	898	44	44	231	1280	151	570	67
VSU 20 1014	⑦	1166_-0.7	1164	1022^+0.7	1095.5^+0.7	1092.5_-0.7	1024	1140	1048	48	48	244	1490	160	660	77

Four Point Contact Ball Slewing Bearing(VSA20/VSI20/VSU20 Series)

VSA20/VSI20/VSU20 series series four-point contact bearings are a type of slewing bearing designed for applications requiring high load capacity and compact design. These bearings are typically used in industries like robotics, cranes, turntables, and wind turbines.

Features of VSA20/VSI20/VSU20 Series Series Four-Point Contact Bearings

Four-Point Contact – The bearing can handle axial, radial, and moment loads simultaneously due to its unique ball raceway design.

Compact Design – Suitable for applications where space is limited.

Single Row Ball Bearing – Unlike conventional bearings, a single row of balls is sufficient to support complex loads.

Flange Design – Some VSA20/VSI20/VSU20 Series series bearings come with integrated mounting flanges, making installation easier.

High Load Capacity – Due to the deep groove and optimized raceway geometry, they can withstand high axial and radial forces.

Lubrication and Sealing – Equipped with seals to protect against contamination and designed for long service life with proper lubrication.

Common Applications

Industrial robotics

Turntables and indexing tables

Material handling equipment

Construction machinery (e.g., cranes, excavators)

Wind turbines

Technical Specifications

Available in different diameters and configurations

Single-row ball bearing construction

Steel or alloy-based raceways for enhanced strength

Preloaded design for minimal clearance and higher precision