VLI200544-N Slewing Bearings

VLI200544-N Slewing Bearings — Flanged Light Series Internal Gear Slewing Ring

Luoyang Heng Guan Bearing Technology Co., Ltd. is a professional bearing R&D, production and sales enterprise of high precision. VLI200544-N Slewing Bearings is a flanged light series 4 point contact ball slewing ring with 544 mm raceway diameter, 444 mm bore, 648 mm OD and 56 mm height. This internal-gear design weighs 39.8 kg and is a dimensionally compatible replacement for the INA/Schaeffler VLI 200 544-N for filling machines, turntables and light rotational automation. All brand names are used for identifying purposes only. Heng Guan Bearing is an independent manufacturer and is not linked with the above brands.

What Is the VLI200544-N Slewing Bearing?

The items are from the INA Light Series 20 flanged internal-gear four-point contact ball slewing ring family. Depending on the source catalogue, these are also known as VLI 200 544-N or VLI20 0544 N.

The four-point contact ball design allows a single row of balls to carry axial loads, radial loads and tilting moments simultaneously. This removes the necessity of a second row and results in the assembly being lighter and more compact than comparable double-row designs.

Inside the bore the internal gear (m6/z76) is machined so that a central pinion drives the ring from underneath the turntable. The under-table drive structure reduces the machine footprint and protects gear teeth from external splashes and debris, a practical benefit for filling lines and washdown settings.

Technical Specifications

Design Features

Four-Point Contact Ball Row

A single ball row handles axial, radial, and tilting moment loads together, avoiding the added weight and height of a second row. This is well suited to light-duty applications where combined loads are moderate and envelope size matters.

Protected Internal Gear (m6/z76)

Gear teeth are positioned inside the bore rather than on the outer ring. This reduces direct exposure to splashes, dust, and process debris — relevant for filling lines, pasteurizer turntables, and food-processing carousels.

Flanged Mount

The 12 mm flange with 12 mm centering lands (T/t) bolts directly onto the machine frame using the standard bolt-circle pattern. No additional machined seat or locating ring is required on the host structure.

Standard_VL Clearance

Radial clearance 0–0.5 mm and axial tilting clearance 0–0.7 mm are set wider than standard series values, supporting smooth, low-drag rotation for light pivots and low-speed indexing tables.

Ring and Ball Materials

Rings are available in 50Mn or 42CrMo4 steel. Balls are GCr15. Double-lip NBR seals retain grease and limit contamination ingress under normal operating conditions.

VLI vs. VSI — Series Selection

The VLI200544-N Slewing Bearings carry C0a = 385 kN. The standard-series VSI 200 544-N carries C0a = 870 kN — approximately 2.3× higher. For filling machines, small turntables, and light indexing, VLI is the correctly rated series. Moving to VSI adds weight and cost without a performance benefit at light-duty loads.

Typical Application Areas

Filling and Packaging Machines — Rotary fillers, cappers, and packaging carousels are the primary application match. Moderate loads, continuous slow rotation, and wet washdown conditions align with the VLI light-series load ratings and NBR-sealed construction.

Food and Beverage Processing — Bottle and can line turntables, pasteurizer carousels, and conveyor rotators benefit from the protected internal gear and wider Standard_VL clearance for smooth, continuous motion.

Rotary Indexing Tables and Light Turntables — Pallet rotators and light assembly turntables mount directly to the 10-hole flange pattern without additional machined seats on the base structure.

Collaborative Robots and Automation — Robotic base turntables and AGV rotators operating at low loads and speeds fall within the light-series load capacity. The flanged mount reduces machining requirements on the robot base casting.

Medical and Laboratory Equipment — CT gantry platforms and imaging turntables require smooth, low-load rotation with controlled clearance. Standard_VL clearance (0–0.5 mm radial) is consistent with these requirements.

Small Solar Trackers — Single-axis tracker pivots operate across -25 to +80 °C, which falls within the bearing's rated temperature range.

Quality and Manufacturing

Heng Guan Bearing produces slewing bearings from 50 mm to 10,000 mm diameter, with precision grades P0, P6, P5, and P4 available. Production equipment includes CNC vertical lathes, CNC quenching machines, CNC gear shapers, machining centers, grinding machines, and large gear hobbing machines.

Every bearing is inspected using coordinate measuring machines, vibration testers, and life testing machines. Traceability is maintained from raw material intake to finished product delivery. Products are manufactured under ISO 9001 certification and are RoHS compliant.

Ordering and Customization

The products are available with a minimum order of 1 piece. Stock units ship within 5–7 days. Customization options include bolt patterns, ring materials (50Mn or 42CrMo4), seal types, surface treatment, precision grade, and clearance class.

Heng Guan also supports OEM/ODM partnerships and replacement sourcing for existing installations. Technical consultation, installation guidance, and non-standard custom parts are available on request.

FAQ

Q1: What exactly is the VLI 200 544-N bearing?

A: It is a flanged internal-gear four-point contact ball slewing ring from the INA/Schaeffler VLI light series 20. Key dimensions: 544 mm raceway, 444 mm bore, 648 mm OD, 56 mm height, 39.8 kg. The internal gear is m6/z76 inside the bore.

Q2: What are the gear specifications?

A: The internal gear is module m6 with 76 teeth (z76), located inside the bore. Standard_VL clearance applies: radial 0–0.5 mm, axial tilting 0–0.7 mm. Double-lip NBR seals protect the gear and raceway.

Q3: What are the load ratings?

A: Dynamic axial Ca = 152 kN, static axial C0a = 385 kN, dynamic radial Cr = 138 kN, static radial C0r = 144 kN. These ratings are suited to filling, packaging, and light turntable applications.

Q4: Is the VLI 544 the same as the VSI 544?

A: No. Both share a 544 mm raceway and internal gear configuration, but VLI 200 544-N is the flanged light series (444 mm bore, 648 mm OD, C0a 385 kN, 39.8 kg). VSI 200 544-N is the standard series with C0a 870 kN. Selection should be based on actual application load requirements.

Q5: How is an internal-gear slewing ring driven?

A: A central pinion meshes with the internal gear teeth inside the bore from below the turntable. This under-table drive configuration is standard for filling carousels, pasteurizer turntables, and robot base rotators. The enclosed gear position provides some protection in washdown and food-grade environments.

Contact Us

Do you have more questions about VLI200544-N Slewing Bearings? Send your inquiry or drawing to mia@hgbearings.com and our engineering team will respond with a quote or technical confirmation.