VSI200414-N Slewing Bearings

VSI200414-N Slewing Bearings | INA VSI Standard 20 Internal Gear Four-Point Contact Ball Slewing Ring

The VSI200414-N Slewing Bearings belongs to the INA VSI Standard 20 series — a single-row, four-point contact ball internal gear slewing ring with a 414 mm raceway diameter, 486 mm outside diameter, and 56 mm height, weighing 31 kg. Its single ball row carries axial, radial, and tilting moment loads simultaneously, making it a practical choice for crane slewing sections, lifting platforms, and other compact-drive applications. Manufactured by Luoyang Heng Guan Bearing Technology Co., Ltd., it is available in precision classes P0, P6, and P5.

What Is the VSI200414-N Slewing Ring?

The VSI200414-N is an internal-gear, four-point contact ball slewing ring from the INA VSI Standard 20 family. Its single ball row handles axial, radial, and tilting moment loads at the same time — a structural advantage over standard deep groove ball bearings, which are designed for one primary load direction.

The internal gear design positions the pinion inside the ring bore. This keeps the drive mechanism compact and protected, reducing the radial space required compared to external-gear configurations. It is a common drive layout in European tower crane and aerial work platform designs.

The normalized (N) gear profile — module 5, 67 teeth, pitch circle 335 mm — provides controlled meshing with a continuous tooth force of 17.7 kN and a peak of 26.2 kN. This load capacity combined with its compact envelope makes the VSI200414-N a regularly specified option for crane slewing sections and lifting platforms.

Full Technical Specifications

Source: Schaeffler medias official catalogue

The 42CrMo4 ring steel is quenched and tempered for core toughness, with induction-hardened raceways reaching 55–62 HRC surface hardness. GCr15 bearing steel balls provide consistent rolling performance. The double-lip NBR seals retain grease and exclude contaminants across the full -25 to +80 °C operating range.

Application Areas

The VSI200414-N Slewing Bearings is primarily used in cranes and lifting platforms, where an internal pinion meshes inside the ring bore to drive slewing rotation while keeping the drive assembly compact.

It is also used in a range of other equipment:

· Excavators & Construction Excavator — The C0a 660 kN static axial capacity supports swing systems and backhoe-loaders subject to digging shock loads.

· Solar Trackers — Single-axis and dual-axis tracker pivots in the 300–500 mm drive housing range are compatible with the VSI200414-N envelope.

· Radar & Antenna Platforms — Internal-gear rings driven by a central pinion provide stable, clearance-controlled rotation for tracking dishes.

· Rotary Indexing Tables — The drive stays inside the table footprint, keeping the overall assembly compact.

· Marine Deck Equipment — The NBR double-lip seal helps retain grease and limit contaminant ingress in humid environments.

Manufacturing and Quality

Heng Guan Bearing manufactures slewing rings in the diameter range of 50mm to 10,000mm in the accuracy categories of P0, P6, P5 and P4. The VSI200414-N is made on CNC vertical lathes, CNC quenching machines, CNC gear shapers, grinding machines and big gear hobbing machines, covering all the important processes in-house.

Quality inspection is carried out using coordinate measuring equipment, vibration testers and life testing devices. Every bearing can be tracked from the raw material input to the completed product.

OEM and ODM are welcomed. If your application calls for an unusual bolt pattern, adjusted clearance or a certain accuracy grade, the engineering team may analyse the requirements and react with a proposal. The firm also offers old product cross-referencing and unique non-standard manufactured parts such as big gears, ring gears, Shafts and couplings.

MOQ is 1pc, suitable for maintenance replacement and small quantity purchase.

FAQ

Q: What are the differences between VSI200414-N, VSA200414-N and VSU200414?

A: All three have the same VSI Standard 20 envelope, 56 mm high, 414 mm diameter raceway. VSI200414-N has internal gear teeth, VSA200414-N has external gear teeth, and VSU200414 is gearless. Which one to choose depends on the location of the driving pinion on your machine.

Q: Is VSI200414-N interchangeable with the original INA bearing?

A: The original INA reference designation is VSI200414-N. Heng Guan is an independent producer supplying bearings to the same mounting specification. "INA" is a third-party trademark and is used here for compatibility identification purposes only.

Q: What precision class and clearance options are available?

A: The normal radial clearance is 0–0.3 mm. Precision courses offered P0, P6, P5. We may also talk about reduced clearance and preloaded variations upon request.

Q: What grade of bolt should I use to install this slewing ring?

A: Use grade 10.9 or 12.9 (high strength) bolts, according to ISO. Do not use bolts that are fully threaded. The unthreaded shank must be in the shear plane. During installation, place the S-mark (soft spot) in the non-load-bearing area.

Q: How frequently should I re-lube the bearing?

A: As a general rule of thumb, for cranes and other heavy equipment, the raceway should be re-lubricated every 100 hours of operation. When the humidity is high, you will need to lubricate more often to flush out the moisture and impurities.

Contact Us

For pricing, stock availability, or a CAD drawing of VSI200414-N Slewing Bearings, contact Heng Guan Bearing at mia@hgb-bearing.com.