Light weight series slewing bearings
(Thin section slewing bearing)

For reason of economy the bearing cross sections in this standard series are relatively small. It is , therefore, necessary to mount these bearings on a distortion-proof companion structure. The contact surfaces for the bearings must be flat to avoid bearing distortion during bolting as this might cause tight spots in the raceways which would lead to peak loads at these points. For this reason, machining of all contact surfaces is required.

Structure

1, Light series, with external gear teeth/with internal gear teeth/without gear teeth

2, Inner ring in the form of an L-section ring/outer ring in the form of an L-section ring/inner and outer rings in the form of L-section rings.

3, Chrome steel balls arranged with plastic spacers.

Light Weight Series Slewing Bearings with External Gear Teeth

Designation	Mass ≈kg	Dimensions				Fixing holes5)				Gear teeth			Tooth force		Basic load ratings
		Da	di	Di	da	La	na3)	Li	ni3)	d0	m	z	Fz norm	Fz max	axial		radial
													Fz norm	Fz max	dyn. Ca	stat. C0a	dyn. Cr	stat. C0r
													kN	kN	kN	kN	kN	kN
VLA 20 0414 N	29.5	503.3	304+0.5	415.5+0.5	412.5-0.5	455	10	332	12	495	5	99	15.9	23.6	169	295	111	110
VLA 20 0544 N	41.5	640.3	434+0.5	545.5+0.5	542.5-0.5	585	14	462	14	630	6	105	21.3	31.5	188	385	123	145
VLA 20 0644 N	48.5	742.3	534+0.6	645.5+0.6	642.5-0.6	685	16	562	16	732	6	122	21.3	31.5	200	455	131	171
VLA 20 0744 N	54.5	838.1	634+0.6	745.5+0.6	742.5-0.6	785	18	662	16	828	6	138	21.3	31.5	211	530	138	198
VLA 20 0844 N	65.5	950.1	734+0.6	845.5+0.6	842.5-0.6	885	18	762	18	936	8	117	28.3	42	222	600	145	224
VLA 20 0944 N	71.5	1046.1	834+0.7	945.5+0.7	942.5-0.7	985	20	862	20	1032	8	129	28.3	42	231	670	151	250
VLA 20 1094 N	83.5	1198.1	984+0.7	1095.5+0.7	1092.5-0.7	1135	22	1012	20	1184	8	148	28.3	42	244	770	160	290

Light Weight Series Slewing Bearings with Internal Gear Teeth

Designation	Mass ≈kg	Dimensions				Fixing holes5)				Gear teeth			Tooth force		Basic load ratings
		Da	di	Di	da	La	na3)	Li	ni3)	d0	m	z	Fz norm	Fz max	axial		radial
													Fz norm	Fz max	dyn. Ca	stat. C0a	dyn. Cr	stat. C0r
													kN	kN	kN	kN	kN	kN
VLI 20 0414 N	27.5	518-0.5	325	415.5+0.5	412.5-0.5	490	8	375	12	335	5	67	17.7	26.2	169	295	111	110
VLI 20 0544 N	38	648-0.5	444	545.5+0.5	542.5-0.5	620	10	505	16	456	6	76	23.7	35	188	385	123	145
VLI 20 0644 N	45	748-0.6	546	645.5+0.6	642.5-0.6	720	12	605	18	558	6	93	23.7	35	200	455	131	171
VLI 20 0744 N	51.5	848-0.6	648	745.5+0.6	742.5-0.6	820	12	705	20	660	6	110	23.7	35	211	530	138	198
VLI 20 0844 N	61.5	948-0.6	736	845.5+0.6	842.5-0.6	920	14	805	20	752	8	94	31.4	46.7	222	600	145	224
VLI 20 0944 N	67.5	1048-0.7	840	945.5+0.7	942.5-0.7	1020	16	905	22	856	8	107	31.4	46.7	231	670	151	250
VLI 20 1094 N	81.5	1198-0.5	984	1095.5+0.7	1092.5-0.7	1170	16	1055	24	1000	8	125	31.4	46.7	244	770	160	290

Light Weight Series Slewing Bearings without Gear Teeth

Designation	Mass ≈kg	Dimensions				Fixing holes5)				Basic load ratings
		Da	di	Di	da	La	na3)	Li	ni3)	axial		radial
										dyn. Ca	stat. C0a	dyn. Cr	stat. C0r
										kN	kN	kN	kN
VLU 20 0414 N	23.5	518-0.5	304+0.5	415.5+0.5	412.5-0.5	490	8	332	12	169	295	111	110
VLU 20 0544 N	31	648-0.5	434+0.5	545.5+0.5	542.5-0.5	620	10	462	14	188	385	123	145
VLU 20 0644 N	36.5	748-0.6	534+0.6	645.5+0.6	642.5-0.6	720	12	562	16	200	455	131	171
VLU20 0744 N	42.5	848-0.6	634+0.6	745.5+0.6	742.5-0.6	820	12	662	16	211	530	138	198
VLU 20 0844 N	48	948-0.6	734+0.6	845.5+0.6	842.5-0.6	920	14	762	18	222	600	145	224
VLU 20 0944 N	54	1048-0.7	834+0.7	945.5+0.7	942.5-0.7	1020	16	862	20	231	670	151	250
VLU 20 1094 N	62.5	1198-0.5	984+0.7	1095.5+0.7	1092.5-0.7	1170	16	1012	20	244	770	160	290

Light weight series slewing bearings (Thin section slewing bearing)

Light weight series slewing bearings
(Thin section slewing bearing)