Four Point Contact Ball Slewing Bearing(Light Series ) | High Precision and Durability-LYNBC

Four Point Contact Ball Slewing Bearing(Light Series) (Without Gear Type)

Four point contact ball bearings light series (Without Gear teeth type)

Light series four point contact slewing rings are designed as units comprising inner and outer rings with a closing plug and securing dowel, rolling elements, spacer, contact seals and lubrication nipples. And also have gear teeth on the outer ring, inner ring or without gear teeth. In addition to have bearing rings with through holes or threaded holes for fixing screws.

Specially, slewing bearing with without gear teeth have inner and outer ring in the form of an L-section ring, balls in accordance with Din 5 401, plastic spacers, lubrication nipple on the circumference of the outer ring. LYNBC can product light series four point contact ball slewing bearing with rolling element pitch circle diameter from 400 mm to 8000 mm.

▲ The design’s of all these slewing bearing 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)
VLU200414	①	518_-0.5	516	304^+0.5	415.5^+0.5	412.5_-0.5	306	490	332	8	12	169	295	111	110	23.5
VLU200544	②	648_-0.5	646	434^+0.5	545.5^+0.5	542.5_-0.5	436	620	462	10	14	188	385	123	145	31
VLU200644	③	748_-0.6	746	534^+0.6	645.5^+0.6	642.5_-0.6	536	720	562	12	16	200	455	131	171	36.5
VLU200744	④	848_-0.6	846	634^+0.6	745.5^+0.6	742.5_-0.6	636	820	662	12	16	211	530	138	198	42.5
VLU200844	⑤	948_-0.6	946	734^+0.6	845.5^+0.6	842.5_-0.6	736	920	762	14	18	222	600	145	224	48
VLU200944	⑥	1048_-0.7	1046	834^+0.7	945.5^+0.7	942.5_-0.7	836	1020	862	16	20	231	670	151	250	54
VLU 201094	⑦	1198_-0.7	1196	984^+0.7	1095.5^+0.7	1092.5_-0.7	986	1170	1012	16	20	244	770	160	290	62.5

Four Point Contact Ball Slewing Bearing(Light Series) (Internal Gear Type)

Four point contact ball bearings light series (Internal Gear teeth type)

Light series four point contact slewing rings are designed as units comprising inner and outer rings with a closing plug and securing dowel, rolling elements, spacer, contact seals and lubrication nipples. And also have gear teeth on the outer ring, inner ring or without gear teeth. In addition to have bearing rings with through holes or threaded holes for fixing screws.

Specially, slewing bearing with internal gear teeth have outer ring in the form of an L-section ring, balls in accordance with Din 5 401, plastic spacers, lubrication nipple on the circumference of the ring without gear teeth. LYNBC can product light series four point contact ball slewing bearing with rolling element pitch circle diameter from 400 mm to 8000 mm.

▲ The design’s of all these slewing bearing 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)
VLI 20 0414N	①	518_–0.5	516	325	415.5⁺^0.5	412.5_–0.5	411	490	375	8	12	335	5	67	17.7	26.2	169	295	111	110	27.5
VLI 20 0544N	②	648_–0.5	646	444	515.5⁺^0.5	542.5_–0.5	541	620	505	10	16	456	6	76	23.7	35	188	385	123	145	38
VLI 20 0644N	③	748_–0.₆	746	546	615.5⁺^0.⁶	642.5_–0.6	641	720	605	12	18	558	6	93	23.7	35	200	455	131	171	45
VLI 20 0744N	④	848_–0.₆	846	648	715.5⁺^0.⁶	742.5_–0.6	741	820	705	12	20	660	6	110	23.7	35	211	530	138	198	51.5
VLI 20 0844N	⑤	948_–0.₆	946	736	815.5⁺^0.⁶	842.5_–0.6	841	920	805	14	20	752	8	94	31.4	46.7	222	600	145	224	61.5
VLI 20 0944N	⑥	1048_–0.₇	1046	840	915.5⁺^0.⁷	942.5_–0.7	941	1020	905	16	22	856	8	107	31.4	46.7	231	670	151	250	67.5
VLI 20 1094N	⑦	1198_–0.₇	1196	984	1095.5⁺^0.⁷	1092.5_–0.7	1091	1170	1055	16	24	1000	8	125	31.4	46.7	244	770	160	290	81.5

Four Point Contact Ball Slewing Bearing(Light Series) (External Gear Type)

Four point contact ball bearings light series (External Gear teeth type)

Light series four point contact slewing rings are designed as units comprising inner and outer rings with a closing plug and securing dowel, rolling elements, spacer, contact seals and lubrication nipples. And also have gear teeth on the outer ring, inner ring or without gear teeth. In addition to have bearing rings with through holes or threaded holes for fixing screws.

Specially, slewing bearing with external gear teeth have inner ring in the form of an L-section ring, balls in accordance with Din 5 401, plastic spacers, lubrication nipple on the circumference of the ring without gear teeth. LYNBC can product light series four point contact ball slewing bearing with rolling element pitch circle diameter from 400 mm to 8000 mm.

▲ The design’s of all these slewing bearing 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_ZT	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_ZT	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)
VLA 20 0414N	①	503.3	417	304 ^+0.5	415.5 _+0.5	304 ^+0.5	306	455	332	10	12	495	5	99	15.9	23.6	169	295	111	110	29.5
VLA 20 0544N	②	640.3	547	434 ^+0.5	545.5 _+0.5	434 ^+0.5	436	585	462	14	14	630	6	105	21.3	31.5	188	385	123	145	41.5
VLA 20 0644N	③	742.3	647	534 ^+0.⁶	645.5 _+0.₆	534 ^+0.⁶	536	685	562	16	16	732	6	122	21.3	31.5	200	455	131	171	48.5
VLA 20 0744N	④	838.1	747	634 ^+0.⁶	745.5 _+0.₆	634 ^+0.⁶	636	785	662	18	16	828	6	138	21.3	31.5	211	530	138	198	54.5
VLA 20 0844N	⑤	950.1	847	734 ^+0.⁶	845.5 _+0.₆	734 ^+0.⁶	736	885	762	18	18	936	8	117	28.3	42	222	600	145	224	65.5
VLA 20 0944N	⑥	1046.1	947	834 ^+0.⁷	945.5 _+0.₇	834 ^+0.⁷	836	985	862	20	20	1032	8	129	28.3	42	231	670	151	250	71.5
VLA 20 1094N	⑦	1198.1	1097	984 ^+0.⁷	1095.5 _+0.₇	984 ^+0.⁷	986	1135	1012	22	20	1184	8	148	28.3	42	244	770	160	290	83.5

Four Point Contact Ball Slewing Bearing(Light Series) Introduction

The INA four point contact ball slewing bearing light series offers a good balance of load capacity, compactness, and efficiency for a wide range of applications. Understanding your specific load, speed, environmental, and accuracy requirements is crucial for selecting the correct bearing for your needs. Always consult the official INA documentation or an authorized distributor for detailed specifications and recommendations.

Key Features and Benefits of Four Point Contact Ball Slewing Bearing(Light Series)

High Load Capacity: Despite being a "light" series, these bearings are designed to handle significant axial, radial, and moment loads.

Space-Saving Design: Optimized dimensions for applications where space is limited.

Low Friction: The design minimizes friction, leading to smooth and efficient operation.

High Rigidity: Provides stable and accurate positioning.

Long Service Life: INA bearings are known for their durability and long operational life.

Integrated Features (Possible): Many slewing bearings can be customized with features like:

Gearing: The outer or inner ring may have gear teeth (external or internal) for direct drive.

Seals: Integral seals to protect the bearing from contaminants.

Mounting Holes: Pre-drilled and tapped holes for easy mounting.

Lubrication Fittings: Grease fittings for relubrication.

Typical Applications

Light to Medium Duty Cranes: Especially smaller mobile cranes or truck-mounted cranes.

Excavators: Smaller and mid-sized excavators where weight is a concern.

Rotary Tables: Positioning systems in machine tools or automation equipment.

Medical Equipment: CT scanners, MRI machines, and other imaging devices.

Radar and Antenna Systems: Where precise positioning and lightweight construction are required.

Wind Turbines: Yaw and pitch adjustments in smaller wind turbine designs.

Important Considerations When Selecting a Bearing

To properly select an INA Four Point Contact Ball Slewing Bearing (Light Series) or any slewing bearing, you need to consider:

Load Requirements:

Axial Load (Fa): The force acting along the axis of rotation.

Radial Load (Fr): The force acting perpendicular to the axis of rotation.

Moment Load (M): The tilting or overturning force. This is often the most critical factor for slewing bearings.

Speed of Rotation: The maximum and average rotational speed (RPM).

Operating Temperature: The temperature range the bearing will be exposed to.

Accuracy Requirements: The required precision of the rotation.

Environmental Conditions: Exposure to dust, moisture, corrosive substances, etc.

Mounting Considerations: How the bearing will be attached to the structure.

Lubrication Requirements: The type of lubricant and the relubrication intervals.

Service Life Requirements: The desired lifespan of the bearing.

Gearing (If Needed): Specify the gear module, number of teeth, and helix angle.

Sealing Requirements: The type of seal needed to protect the bearing.