VSU200414 Slewing Bearings

VSU200414 Slewing Bearings — INA VSU Standard 20 Series Gearless Four-Point Contact Ball Slewing Ring

VSU200414 Slewing Bearings belong to the INA VSU Standard 20 series — a gearless, single-row, four-point contact ball slewing ring. Key dimensions are a 414 mm raceway diameter, 486 mm outside diameter, 342 mm bore, and 56 mm section height. The bearing weighs 27.71 kg and carries a static axial load of 660 kN and a dynamic axial load of 137 kN. Luoyang Heng Guan Bearing Technology Co., Ltd. manufactures and supplies this model for crane, lifting platform, and related industrial applications.

What Is the VSU200414 Slewing Ring?

The VSU200414 is a gearless four-point contact ball slewing ring from the INA VSU Standard 20 series. "Gearless" means the ring carries no machined gear teeth. Rotation is achieved through an external pinion, chain or belt drive, friction wheel, or a motor connected to the turntable structure, giving designers flexibility in drive configuration.

The four-point contact ball geometry allows a single ball row to carry axial forces, radial forces, and tilting moment loads simultaneously. In many crane and platform setups, this removes the need for a second bearing row, which reduces overall system weight and assembly complexity.

Raceway rings are made from 50Mn or 42CrMo4 alloy steel, quenched and tempered for core toughness, with raceway surfaces induction-hardened to 55–62 HRC. Rolling elements use GCr15 bearing steel balls. Double-lip NBR seals protect against grease loss and contaminant ingress, which is relevant for outdoor or dusty operating environments.

VSU200414 Full Specifications

Data source: Schaeffler medias official catalogue (retrieved 2026-08-17)

Structural Features

Multi-load capacity single row. The geometry of four point contact ball can handle axial, radial and tilting moment stresses in one row. This generally removes the requirement for a dual-row set up in traditional crane and lifting platform applications.

Compact portion with good static capacity. A 660 kN static axial load rating in a 56 mm section height allows for a narrow bearing envelope, which is important in machine designs with limited vertical space.

Flexibility of gearless drive. If there are no inbuilt gear teeth, the drive arrangement is decided at the machine level – external pinion on a separate gear ring, chain on bolted sprockets, friction wheel or direct motor hookup. This is useful for both new designs and retrofit jobs.

20 series standard bolt pattern. The 460 mm external and 368 mm internal bolt circles, each with 24 holes, are in accordance with VSU Standard 20 envelope. This dimension constancy allows to replace and upgrade later on with the same series.

Broad working temperature range. The NBR-sealed ring has a temperature range from -25 °C up to +80 °C, suitable for typical outdoor construction equipment and solar tracking systems.

Typical Applications

The principal use case is crane and lifting platform. The 660 kN static axial margin accommodates the tilting moments created by the extension of the boom and suspended loads, while the gearless style provides crane OEMs the opportunity to choose their desired drive configuration.

Excavators and construction machines work under stress loading and high pollution situations. Double-lip NBR seals retain oil, keep debris out and improve service intervals in earthmoving situations.

Solar tracker pivots have the advantage of sealed construction and a rating of -25 to +80 °C. The 342-486mm radial envelope is compatible with conventional single and dual-axis tracker pivot configurations.

For wind turbine yaw systems with external pinion drives on a separate gear ring, the VSU200414 Slewing Bearings may be used as the structural pivot bearing, saving the expense of integrated gear tooth machining on the slewing ring itself.

Radar, antenna and positioning equipment have to rotate smoothly with steady clearance. These accuracy requirements are satisfied by the radial clearance control of 0–0.3 mm and the available precision classes P0, P5 and P6.

Quality and Manufacturing

Coordinate measuring machines are used for dimensional verification. Vibration testing for noise and runout levels. Traceability of raw material is maintained from steel mill certifications through machining and heat treatment to the completed ring.

For the rotational accuracy required by your application, precision classes P0, P6, and P5 are available. Products are produced according to DIN, ISO and GB standards. The plant is ISO 9001, and the goods are RoHS compliant.

The production equipment is CNC vertical lathe, CNC quenching machine, CNC gear shaper, machining center, grinding machine and big gear hobbing machine . Besides orders, custom non-standard components such big gears, Shafts, ring gears and couplings may also be manufactured.

Ordering Information

For standard models, the MOQ is only one item. Stock models ship in 2-3 days. Technical confirmation and technical help available on request. We support OEM & ODM cooperation. The products are shipped to the USA, Germany, UK, Italy, Australia and Middle East.

FAQ

Q: What is the difference between VSU200414, VSI200414-N, and VSA200414-N?

A: All three share the Standard 20 series envelope with 56 mm height and 414 mm raceway diameter. Our products are gearless. VSI200414-N has internal gear teeth on the inner ring. VSA200414-N has external gear teeth on the outer ring. The choice depends on which drive configuration suits the machine layout.

Q: Is the VSU200414 interchangeable with INA or RKS bearings?

A: VSU200414 is the original INA reference number. It is also listed as RKS 060.20.0414 in cross-reference catalogues. Heng Guan supplies this bearing to the same mounting standard as an independent manufacturer. "INA" and "RKS" are third-party trademarks referenced for compatibility identification only.

Q: What clearance and precision options are available?

A: Standard radial clearance is 0–0.3 mm. Precision classes P0, P6, and P5 are available. Reduced-clearance or preloaded variants can be discussed for applications that require tighter clearance control.

Q: How is a gearless slewing ring driven?

A: Common drive options include an external pinion engaging a separately mounted gear ring, chain or belt on bolted sprockets, a friction wheel, or a hydraulic or electric motor coupled to the turntable structure.

Q: What bolt grade is recommended for mounting?

A: High-strength bolts of grade 10.9 or 12.9 (ISO) are required. Use bolts where the unthreaded shank sits in the shear plane. The 24-hole pattern on the 460 mm outer and 368 mm inner bolt circles matches standard turntable mounting layouts.

Q: Is the VSU200414 in stock?

A: Standard models typically ship within 5–7 days. MOQ is 1 piece. Contact mia@hgb-bearing.com for current stock status and pricing.

Contact Us

For inquiries about VSU200414 Slewing Bearings — including pricing, lead time, and technical support — please contact Heng Guan Bearing at mia@hgb-bearing.com. We respond to all technical and commercial inquiries.