Slewing Bearing

14 products

Precision slewing bearings are the backbone of complex mechanical systems, providing the stability needed to handle massive axial, radial, and tilting moment loads. At SKDIN, our flagship precision series stands as a testament to our commitment to engineering excellence.

We offer 14 specialized models of high-end 4-point contact precision slewing bearings in the VSI (Internal Gear) and VSA (External Gear) series, designed to outperform standard industrial alternatives. By utilizing top-tier SUJ2 (GCr15) steel and advanced through-hardening techniques, we achieve P5-class accuracy with a guaranteed run-out of less than 0.02mm.

With pre-engineered mounting holes and high-performance dual-sealing, our bearings provide a seamless, high-accuracy solution for Precision grinding machines, laser chucks, medical equipment, rotary tables and indexing plates, radar systems, and similar devices. SKDIN is proud to help global manufacturers transition from standard performance to extreme precision.

Slewing Bearing Product Information

External Gear Slewing Bearing (VSA series)

Bearing Precision: P5, Bearing Material: SUJ2 (GCr15), Four-Point Contact Ball, External Gearing

Download SKDIN ALL External Gear Slewing Bearing Structure and Technical Data Sheet (PDF)

Part No.	Basic Dimensions									Gear Parameters			Installation Dimensions				Basic Rated Load(KN)				Clearance(mm)
Bearing Part No.	Outside Diameter D	Bore Diameter d		Outer Ring Pilot Diameter dzt	Inner diameter outer ring d1		Inner Ring Pilot d1zt	Outside diameter inner ring D1		Pitch circle diameter gearing do	Module of gearing M	Number of teeth	Inner Ring		Outer Ring		Axial		Radial		Radial	Axial
Bearing Part No.	Outside Diameter D	Bore Diameter d		Outer Ring Pilot Diameter dzt	Inner diameter outer ring d1		Inner Ring Pilot d1zt	Outside diameter inner ring D1		Pitch circle diameter gearing do	Module of gearing M	Number of teeth	P.C.D	Number of mounting holes N	p.c.d	Number of mounting holes n	Ca	Coa	Cr	Cor	Radial	Axial
VSA200414	503.3	342	+0.5 0	344	415.5	+0.5 0	417	412.5	+0.5 0	495	5	99	455	20	368	24	169	560	111	248	0～0.05	0～0.08
VSA200544	640.3	472	+0.5 0	474	545.5	+0.5 0	547	542.5	+0.5 0	630	6	105	585	28	498	32	188	740	123	325
VSA200644	742.3	572	+0.6 0	574	645.5	+0.6 0	647	642.5	+0.6 0	732		122	685	32	598	36	200	880	131	385
VSA200744	838.1	672	+0.6 0	674	745.5	+0.6 0	747	742.5	+0.6 0	828		138	785	36	698	40	211	1010	138	445
VSA200844	950.1	772	+0.6 0	774	845.5	+0.6 0	847	842.5	+0.6 0	936	8	117	885	36	798	40	222	1150	145	510
VSA200944	1046.1	872	+0.7 0	874	945.5	+0.7 0	947	942.5	+0.7 0	1032		129	985	40	898	44	231	1280	151	570
VSA201094	1198.1	1022	+0.7 0	1024	1095.5	+0.7 0	1097	1092.5	+0.7 0	1184		148	1135	44	1048	48	244	1490	160	660

Internal Gear Slewing bearing (VSI series)

Bearing Precision: P5, Bearing Material: SUJ2 (GCr15), Four-Point Contact Ball, Internal Gearing

Download SKDIN ALL Internal Gear Slewing Bearing Structure and Technical Data Sheet (PDF)

Part No.	Basic Dimensions									Gear Parameters			Installation Dimensions				Basic Rated Load(KN)				Clearance(mm)
Bearing Part No.	Outside Diameter D		Outer Ring Pilot Diameter Dzt	Bore Diameter d	Inner diameter outer ring d1		Outside diameter inner ring D1		Inner Ring Pilot D1zt	Pitch circle diameter gearing do	Module of gearing M	Number of teeth Z	Outer Ring		Inner Ring		Axial		Radial		Radial	Axial
													Outer Ring		Inner Ring		Axial		Radial
													p.c.d	Number of mounting holesn	P.C.D	Number of mounting holesN	Ca	Coa	Cr	Cor
VSI200414	486	0 -0.5	484	325	415.5	+0.5 0	412.5	0 -0.5	411	335	5	67	460	24	375	24	169	560	111	248	0~0.05	0~0.08
VSI200544	616	0 -0.5	614	444	545.5	+0.5 0	542.5	0 -0.5	541	456	6	76	590	32	505	32	188	740	123	325
VSI200644	716	0 -0.6	714	546	645.5	+0.6 0	642.5	0 -0.6	641	558		93	690	36	605	36	200	880	131	385
VSI200744	816	0 -0.6	814	648	745.5	+0.6 0	742.5	0 -0.6	741	660		110	790	40	705	40	211	1010	138	445
VSI200844	916	0 -0.6	914	736	845.5	+0.6 0	842.5	0 -0.6	841	752	8	94	890	40	805	40	222	1150	145	510
VSI200944	1016	0 -0.7	1014	840	945.5	+0.7 0	942.5	0 -0.7	941	856		107	990	44	905	44	231	1280	151	570
VSI201094	1166	0 -0.7	1164	984	1095.5	+0.7 0	1092.5	0 -0.7	1091	1000		125	1140	48	1055	48	244	1490	160	660

Slewing Bearing Code Interpretation

For example: VSA200414/VSI200414

VSA: External Gear
VSI: Internal Gear
20: Rolling Element Diameter
0414: Nominal Size Code

Based on the structure of their rolling elements, slewing bearings are classified into two series: crossed roller slewing bearings (customizable upon request) and four-point contact ball slewing bearings.

Based on gear configuration, they are categorized into three types: non-geared, internally geared, and externally geared. These bearings can be fitted with seals, allow for minor adjustments to clearance and rotational torque, and feature customizable precision levels to meet the requirements of diverse operating conditions.