21 Tooth Light Duty Rotary Hanger
Hangzhou Ocean Industry Co., Ltd. is one of the most experienced manufacturers and suppliers of 21 tooth light duty rotary hanger in China. Welcome to wholesale customized 21 tooth light duty rotary hanger at competitive price from our factory. Good service and quality products are available.
21-Tooth Light-Duty Rotary Hanger | Micro-Indexing Painting Line Tool | Hangzhou Ocean Industry
In the specialized field of high-precision surface treatment, the density of rotation increments directly dictates the uniformity of the coating film. Hangzhou Ocean Industry Co., Ltd. has engineered the 21-Tooth Light-Duty Rotary Hanger to meet the rigorous demands of "Micro-Indexing" applications. Unlike standard 4 or 8-tooth versions, this 21-point system provides a remarkable 17.1-degree rotation per step, ensuring that intricate geometries and shadowed crevices receive an identical volume of paint or powder.
Designed to integrate seamlessly with a single guide conveyor chain, this lightweight accessory is optimized for high-throughput lines where "overspray waste" must be minimized. While it is fully compatible with larger infrastructures like the painting line chain QXG250 conveyor chain, its low-inertia design makes it the superior choice for high-speed industrial conveyor system chain configurations. By utilizing a fixed hanging plate chain interface, the hanger remains perfectly vertical even during rapid indexing. For facilities looking to achieve automotive-grade finishes on small components, this 21-tooth solution provides the mechanical resolution necessary to outperform traditional manual or low-resolution automated spraying methods.
Technical Specifications Matrix
| Technical Metric | Specification Value | Engineering Note |
|---|---|---|
| Model Number | HOI-RH21-L | Hangzhou Ocean Industry Precision Series |
| Tooth Count | 21 Teeth | 17.14° per mechanical index |
| Max Working Load | 12.0 kg | Light-duty high-speed rating |
| Compatible Track | Single Guide Conveyor Chain | Universal 5-ton or light tracks |
| Rotation Trigger | Passive Mechanical Star Wheel | No electrical power required |
| Material Finish | Hardened Zinc / Nickel Alloy | Industrial-grade corrosion protection |
Core Product Features
High-Resolution Indexing: The 21-tooth star wheel offers a fine 17.1° rotation, virtually eliminating "spray shadows" on complex 3D parts.
Low-Inertia Weight Profile: Crafted by Hangzhou Ocean Industry using lightweight alloys to prevent strain on the heavy duty conveyor chain drive units.
High-Temperature Sealed Bearings: Features specialized race bearings that maintain low friction even after thousands of cycles through 250°C curing ovens.
Modular "Plug-and-Play" Setup: Designed for immediate attachment to any standard fixed hanging plate chain, allowing for rapid line re-tooling.
Chemical Vapor Resistance: The hanger's surface is treated with an advanced anti-corrosive layer to resist the acidic vapors found in pre-treatment wash tunnels.
Engineering Selection & Environmental Suitability
Engineering Selection Advice
When implementing the 21-tooth hanger, engineers must prioritize "Kicker Pin Pitch." Because each step is only 17.1 degrees, the kicker pins on your industrial conveyor system chain must be precisely spaced to avoid "skipping" teeth. Hangzhou Ocean Industry recommends this model specifically for workpieces with deep internal cavities or multi-faceted surfaces where standard rotation is insufficient to reach recessed areas.
Applicable Environmental Conditions
Thermal Range: Stable operation from -15°C to +230°C (Standard Curing).
Atmospheric Resistance: Rated for high-humidity and salt-spray environments common in painting line pre-treatment zones.
Load Limit: Optimized for precision parts weighing between 1kg and 12kg.
Working Principle: The Continuous Indexing Loop
The 21-tooth rotary hanger functions as a passive indexing tool within the industrial conveyor system chain. As the chain moves, the hanger's star wheel engages a stationary pin (the "kicker") mounted on the track. Because the fixed hanging plate chain holds the assembly in a rigid vertical plane, each strike forces the hanger to rotate exactly 17.1 degrees. This high-frequency rotation allows the workpiece to "spin" nearly continuously through the spray zone, ensuring that the painting line chain QXG250 conveyor chain delivers perfectly coated products with zero manual intervention.
Installation & Maintenance Best Practices
Pin Alignment Precision: The kicker bar must be installed at the exact horizontal centerline of the star wheel to prevent vertical torque on the single guide conveyor chain.
Lubrication Protocol: Hangzhou Ocean Industry suggests using a dry-film molybdenum lubricant to prevent wet oil from dripping onto freshly painted workpieces during the curing phase.
Hanger Spacing: Maintain a minimum distance of 1.2x the workpiece diameter between hangers on the heavy duty conveyor chain to ensure clear rotation paths.
Strategic Application Scenarios
Electronic Hardware: Precision coating for 5G base station components and server enclosures on a single guide conveyor chain.
Medical Equipment: Uniform sterilization-grade coating for surgical trays and diagnostic housings using the painting line system.
High-End Consumer Goods: Gloss-finishing for luxury cosmetics packaging and premium appliance handles on an industrial conveyor system chain.
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