VLI200744-N Slewing Bearings

VLI200744-N Slewing Bearings — INA/Schaeffler Compatible Flanged Light Series Internal Gear Slewing Ring

The VLI200744-N Slewing Bearings belong to the INA VLI Light Series 20 flanged internal-gear four-point contact ball family. With a 744 mm raceway, 648 mm bore, 848 mm OD, 56 mm height, and 51.5 kg weight, this ring carries axial, radial, and tilting loads in a single compact row. The internal gear (m6 / z110) sits inside the bore, shielded from external contamination. It is well suited to filling carousels, rotary indexing tables, and collaborative robot bases where a flanged mount simplifies installation.

Product Specifications

What Is the Light Series Four-Point Contact Ball Internal Gear Slewing Ring?

The VLI 200 744-N is a flanged internal-gear four-point contact ball slewing ring from the INA VLI Light Series 20, clearly differentiated from the standard-series VSI 200 744-N by its flange outer ring and reduced cross-section height.

The four-point contact ball design allows a single row of GCr15 balls to simultaneously carry axial loads, radial loads, and tilting moments — covering three load directions without adding ring rows or weight. The internal gear (m6 / z110) sits inside the bore on the outer ring, recessed away from external contamination.

For applications requiring a compact under-table pinion drive, such as filling carousels, pasteurizer turntables, and robotic base platforms, this geometry reduces overall machine height and simplifies the drive layout.

Key Design Features

Flanged outer ring for direct mounting. The 12 mm flange with T/t 12 mm centering lands bolts directly to the machine frame using 12 × 18 mm holes on an 820 mm bolt circle. This can eliminate the need for a separate counterbore or locating ring, reducing machining steps at assembly.

Protected internal gear (m6/z110). The teeth are recessed inside the bore, reducing direct exposure to splashing water, food residue, and dust compared to an external-gear arrangement. This makes the ring compatible with washdown environments without requiring additional tooth covers.

Standard_VL clearance range. Radial clearance 0–0.5 mm and axial tilting clearance 0–0.7 mm are set wider than standard-series values, keeping the ring free-running under light pivot loads typical of indexing tables and light collaborative robot bases.

Double-lip NBR seals. Both lips retain grease and resist contaminant ingress simultaneously, providing a sealed interface suitable for wet processing lines and outdoor light-duty applications operating between -25 and +80 °C.

Weight-conscious cross-section. At 51.5 kg for a 744 mm raceway, the Light Series 20 ring keeps machine frame loads manageable on mid-size carousel equipment where a standard-series ring would add unnecessary mass.

VLI200744-N vs. VSI200744-N: Key Differences

Both rings share a 744 mm raceway, but they are different products built for different load duties. Engineers sometimes conflate them because of the similar model numbers.

The VLI light series carries approximately 2.3× lower static axial load than the VSI standard series. For filling machines, rotary indexing tables, food processing carousels, and collaborative robots operating within the 530 kN C0a envelope, the VLI 200 744-N is appropriately sized. For heavy crane, excavator, or high-static-load duties, the standard series is the correct choice.

Typical Application Areas

Filling and packaging machines. Rotary fillers, cappers, and packaging turntables typically run at moderate loads and continuous slow rotation. The 744 mm raceway suits mid-size carousel diameters, and the flange outer ring mounts directly onto the machine frame without additional adapters.

Food and beverage processing. Bottle and can line carousels and pasteurizer turntables can use the double-lip NBR seal and Standard_VL clearance to manage lubrication retention and contaminant exclusion. Specific grease or surface treatment requirements should be confirmed with our engineering team before ordering.

Rotary indexing tables and light turntables. Pallet rotators and light assembly turntables can use the 12-hole flange pattern for standard turntable mounting, which avoids the need for machined locating seats in the table base.

Collaborative robots and AGV rotators. Light-duty robot base platforms and automated guided vehicle rotators operating within the light-series load band benefit from the flanged ring geometry, which can eliminate a machined seat in the robot base casting.

Medical and laboratory equipment. CT gantry platforms and lab centrifuge turntables requiring smooth, controlled-clearance rotation can operate within the Standard_VL clearance range (radial 0–0.5 mm, axial tilting 0–0.7 mm).

Small solar trackers. Single-axis PV tracker pivots in light-duty arrays that fall within the C0a 530 kN load envelope can use this ring across the -25 to +80 °C operating temperature range.

Materials and Quality Control

Rings are manufactured from 50Mn or 42CrMo4 alloy steel with induction-hardened raceways. GCr15 bearing steel balls provide wear resistance suited to continuous slow-rotation duty. Double-lip NBR seals are fitted as standard.

Every bearing passes dimensional checks, vibration testing, and life-testing verification. Full material and process traceability is maintained from raw steel to finished ring. Products are manufactured in compliance with DIN, ISO, and GB standards, and Heng Guan's factory holds ISO 9001 certification with RoHS-compliant processes.

Supply, Customization, and Interchangeability

Stock units ship within 5–7 days. Standard non-stock orders are fulfilled in 30–45 days, and custom configurations in 45–60 days. MOQ is 1 pc, making the ring accessible for maintenance replacements and prototype builds.

VLI200744-N Slewing Bearings are dimensionally interchangeable with the Schaeffler/INA VLI 200 744-N mounting standard. Light-series equivalents include SKF RKS.22 0741 and related INA VLI variants such as -RL0 and -RL1. All brand names are referenced for compatibility identification only; Heng Guan Bearing is an independent manufacturer and is not affiliated with the brands listed above.

Customization options include bolt pattern, ring material (50Mn or 42CrMo4), seal type, surface treatment, precision grade (P0/P6/P5), and clearance class. Technical consultation, installation guidance, and old-product mapping services are available. OEM/ODM inquiries are welcome.

FAQ

Q: What exactly is VLI 200 744-N?

A: It is a flanged internal-gear four-point contact ball slewing ring from the INA VLI Light Series 20. Raceway diameter is 744 mm, bore 648 mm, OD 848 mm, height 56 mm, weight 51.5 kg, with internal gear m6/z110 inside the bore on the outer ring.

Q: What is the gear specification of VLI 744?

A: The internal gear is cut on the outer ring inside the bore: module m6, tooth count z110. Standard_VL clearance applies — radial 0–0.5 mm, axial tilting 0–0.7 mm — and double-lip NBR seals protect the gear from contamination.

Q: What is the load capacity of VLI 744?

A: Dynamic axial load Ca = 171 kN, static axial load C0a = 530 kN; dynamic radial Cr = 155 kN, static radial C0r = 197 kN. The C0a 530 kN rating is approximately 2.3× lower than the standard-series VSI 200 744-N (C0a 1,200 kN). Application selection should be based on verified duty loads.

Q: Is VLI 744 the same as VSI 744?

A: No. Both are internal-gear four-point contact rings on a 744 mm raceway, but VLI 200 744-N is the flanged light series (648 mm bore, 848 mm OD, 51.5 kg, C0a 530 kN), while VSI 200 744-N is the standard series with approximately 2.3× higher static axial capacity. Selection should be based on load requirements.

Q: How is an internal-gear slewing ring driven?

A: A pinion below the table meshes with the internal gear teeth inside the bore. This under-table drive arrangement keeps the gear teeth recessed and is the common configuration for filling carousels, pasteurizer turntables, and robot bases in washdown environments.

Contact Us

For a quote or technical confirmation on VLI200744-N Slewing Bearings, email mia@hgbearings.com. Our engineers will respond promptly with pricing and application guidance.