VLA200944-N Slewing Bearings

 VLA200944-N Slewing Bearings — Flanged Light Series External Gear Four-Point Contact Ball Slewing Ring

The VLA200944-N Slewing Bearings are flanged light-series four-point contact ball rings with an external gear (m8/z129), a 944 mm raceway diameter, 834 mm bore, 1046.1 mm outside diameter, and 56 mm height, weighing 70.3 kg. Manufactured by Luoyang Heng Guan Bearing Technology Co., Ltd., these rings are designed for low-speed rotary applications where axial, radial, and tilting moment loads must be handled by a single compact bearing assembly.

Full Specifications

Design and Construction

The VLA200944-N is a flanged light-series external-gear slewing ring intended for low-speed, moderate-load rotary applications. Its four-point contact ball design allows a single ball row to carry axial, radial, and tilting moment loads simultaneously, which suits installations where axial space is constrained.

The external gear section (m8, 129 teeth) is located on the outer ring, enabling direct engagement with a side-mounted pinion or worm drive. This arrangement keeps the drive configuration compact in rotary indexing tables and similar assemblies.

The 12 mm flange with T/t 12/12 mm centering lands bolts directly to the mounting structure. No counterbore or separate locating ring is required, which simplifies the installation process.

Ring material options are 50Mn and 42CrMo4 steel. Rolling elements use GCr15 bearing steel. The double-lip NBR seal retains grease and reduces contamination ingress under standard operating conditions.

Application Areas

The Standard_VL clearance (radial 0–0.5 mm, axial tilting 0–0.7 mm) is wider than the standard series, making this ring suited for free-running, low-torque pivot arrangements. Typical application areas include:

Filling and Packaging Machines — Rotary fillers and capping carousels operating at moderate loads and continuous slow speed can use the external gear to engage a drive pinion while maintaining a compact deck footprint.

Food and Beverage Processing — Bottle-line turntables and pasteurizer carousels benefit from the double-lip NBR seal in wet or washdown environments.

Rotary Indexing Tables — Assembly turntables and rotary indexers can be driven by a below-table pinion engaging the external gear, keeping the work surface unobstructed.

Collaborative Robots and Automation — The 834 mm bore supports cable routing through the ring center, and the 12 mm flange simplifies mounting to robot pedestals.

Small Solar Trackers — The -25 to +80 °C operating range is compatible with outdoor PV farm climates, and the C0a of 670 kN is appropriate for single-axis tracker pivot loads at this aperture size.

Medical and Laboratory Equipment — Imaging gantries and lab turntables that require smooth, low-torque rotation fall within the light-series load range.

Light Material Handling and Amusement Rides — Carousel conveyors, pallet rotators, and small rides operate within the light-series load band, with the sealed gear protected from debris.

VLA vs. VSA — Series Comparison

Both VLA 200 944-N and VSA 200 944-N share the same 944 mm raceway diameter and external-gear design, but they are not interchangeable by load rating.

VLA 200 944-N (light series) has a static axial load rating of C0a 670 kN and weighs 70.3 kg. The VSA 200 944-N (standard series) carries C0a 1,520 kN — approximately 2.3 times higher. Applications involving heavier structural loads should use the VSA series. For solar trackers, packaging lines, and light automation, the VLA series provides an appropriate capacity-to-weight ratio.

Cross-Reference and Interchangeability

The VLA200944-N Slewing Bearings are cross-referenced to the following equivalents:

· SKF RKS.21 0941 (light-series external-gear equivalent)

· Kaydon RK6 series

· Rothe Erde 231.20 series

· Rollix 21-0941-01

· INA / Schaeffler VLA 200 944-N (original reference)

Heng Guan manufactures to the identical INA mounting standard. Units replacing an existing INA/Schaeffler-compatible flanged light-series VLA200944-N external-gear ring will fit the existing bolt pattern and centering lands without modification. 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.

Supply and Customization Options

MOQ is 1 piece, which suits maintenance replacements and prototype builds. Customization options include bolt patterns, ring material grade, seal type (NBR or FKM), surface treatment, precision class (P0 / P6 / P5), and clearance adjustment. The team also handles old product mapping and non-standard parts such as large gears, Shafts, and ring gears. Two-dimensional engineering drawings and technical consultation are available; 3D drawings are not provided.

FAQ

Q: What exactly is the VLA 200 944-N?

A: It is a flanged external-gear four-point contact ball slewing ring from the INA VLA light series 20. Key dimensions: 944 mm raceway diameter, 834 mm bore, 1046.1 mm OD, 56 mm height, 70.3 kg. The external gear section m8/z129 is on the outer ring.

Q: What are the gear and clearance specifications?

A: Module m8, tooth count z129, located on the outer ring. Standard_VL clearance is radial 0–0.5 mm and axial tilting 0–0.7 mm. Sealing is double-lip NBR.

Q: What is the load capacity?

A: Dynamic axial Ca = 188 kN, static axial C0a = 670 kN, dynamic radial Cr = 170 kN, static radial C0r = 250 kN.

Q: Is VLA 200 944-N the same as VSA 200 944-N?

A: No. Both use a 944 mm raceway with external gear, but the VLA is the light series (C0a 670 kN, 70.3 kg) and the VSA is the standard series (C0a 1,520 kN). Selection should be based on actual duty load.

Q: Which brands does the VLA200944-N cross-reference?

A: It cross-references to SKF RKS.21 0941, Kaydon RK6 series, Rothe Erde 231.20 series, and Rollix 21-0941-01. Heng Guan manufactures to the identical INA mounting standard.

Contact Us

Have a question or need a quote for VLA200944-N Slewing Bearings? Reach us at mia@hgbearings.com.