Reciprocating Machine

Characteristics

▪ The power components adopt top-brand, high-torque planetarr gear reducers, paired with high-precision serro motors, allowing the entire machine to operate with excellent stability even at extremely high speeds or during rapid reciprocation.

▪ The speed control components use serro controllers equipped with microprocessor control and IGBT technology, offering both reliability and ffexibility. Comprehensive protection features safeguard both the controller and the motor.

▪ The control system utilizes a new-generation digital intelligent operation controller. With a fully digital powder coating control interrace, users can easily and accurately set coating parameters via touch keys. 

The controller supporrs coating program selection, fault diagnostics, data setting limits, remote RS485 communication control, and can store up to 250 coating programs.

▪ The mechanical system features four dual-row U-groove ball-bearing rollers that tightly grip aluminum-proffle bearing steel guide rails. Movement is driven by a steel-wire timing belt, resulting in smooth, vibration-free operation with low noise and minimal wear.

▪ The spray gun rod and gun holder are made of aluminum alloy, offering lightweight design, stable perrormance, and an attractive appearance.

▪ The reciprocator has an adjustable operating speed range of 0.08 m/s to 0.8 m/s, with available stroke lengths of 1.5 m, 2.0 m, 2.5 m, 3.0 m, and 3.5 m. Custom strokes can be made upon special request.

What is a reciprocating machine?

A reciprocating machine(also called powder coating reciprocator) is an automated machine that moves spray guns vertically to ensure uniform and efficient coating on workpieces passing in front of it. Designed for precision and reliability, the Haztek reciprocating machine delivers consistent motion, smooth operation, and superior coating quality.

Equipped with a durable brake drive motor and high-performance gearbox, it ensures long service life under heavy industrial conditions. The chain or belt drive system guarantees quiet, vibration-free movement. Both stroke length and speed can be easily adjusted for different coating requirements, achieving perfect and repeatable powder coverage every time.

Key Benefits:

Stable, precise vertical movement for even coating 

Adjustable stroke and speed for various part sizes 

Low noise, low vibration operation 

Long-life components for continuous production

How Does a reciprocating machine(Powder Coating Reciprocator) Work?

A powder coating reciprocator automates the electrostatic powder coating process, ensuring uniform coverage and high efficiency for industrial applications. Instead of using liquid paint, this system applies dry powder coatings made from polymer resins, pigments, and additives that are fused and ground into a fine powder.

During the process, electrostatic spray deposition (ESD) charges the powder particles, which are then attracted to grounded metal parts. The reciprocator moves the spray guns up and down with precise control, coating every surface evenly. Once applied, the powder is cured in an oven, forming a smooth, durable, and corrosion-resistant finish.

Compared to traditional liquid painting, Haztek powder coating systems deliver superior adhesion, faster application, and an environmentally friendly process with minimal waste.

Tips on Choosing the Best Powder Coating Reciprocator for Your Industry

Choosing the right powder coating reciprocator is essential to ensure consistent finish quality, production efficiency, and long-term reliability. Whether you’re coating metal furniture, aluminum profiles, or industrial components, the right equipment can significantly enhance your powder coating performance.

1. Understand Your Coating Requirements

Identify the type of parts you plan to coat — metal, plastic, or wood — and select a reciprocator that supports compatible spray guns and control systems. For large or complex parts, choose a unit with adjustable stroke and speed to guarantee full, even coverage.

2. Match the Coating Type

Different coatings require different setups. For example, ceramic coatings suit high-temperature applications, intumescent coatings provide fire protection, and polyester or epoxy powders are ideal for decorative or protective finishes. Make sure your reciprocator can adapt to various coating materials and application environments.

3. Prioritize Efficiency and Capacity

Consider the size and scale of your operation. For large production lines, opt for a high-performance powder coating reciprocator that can operate continuously and synchronize with automatic powder booths and curing ovens. Efficiency, speed, and durability are key factors.

4. Focus on Finish Quality and Durability

A high-quality reciprocator ensures smooth, defect-free coating results and long-term reliability under heavy-duty conditions. Choose a machine with a stable drive system, vibration-free movement, and precise stroke control for consistent coating performance.

Ultimate FAQ Guide to Powder Coating Reciprocator

Looking for answers about powder coating reciprocators? This guide covers everything from common coating issues to operating parameters and performance tips — helping you get the best out of your Haztek automatic powder coating system.

1. Common Technical Questions

Q1: What is the most common problem with powder coating reciprocator?
The most common issue is the Faraday cage effect, where corners or recessed areas prevent powder from adhering evenly. Adjusting gun position, voltage, and air pressure can help achieve full coverage.

Q2: What causes bubbles or pinholes in powder coating?
These defects usually come from outgassing in porous metals (like aluminum or cast iron). Proper preheating and cleaning before coating help eliminate trapped air and moisture.

Q3: What air pressure is recommended?
Powder coating reciprocators typically operate at 5–10 psi. Lower pressure helps improve coverage in recessed or curved areas by reducing powder repulsion.

Q4: What voltage should be used?
Professional-grade systems such as Haztek powder coating guns operate best between 50–80 kV for standard coating, with adjustable voltage for complex parts to avoid Faraday effects.

Q5: What curing temperature is required?
Most powder coatings cure at 350–400°F (160–210°C) for 10–20 minutes, ensuring a durable, hard finish after polymerization.

Q6: What’s the ideal gun distance?
Maintain a 6–10 inch (15–25 cm) distance from the part to achieve optimal electrostatic attraction and uniform film thickness.

2. Quality, Durability & Performance

Q7: Why is my powder not sticking?
Poor grounding or incorrect voltage settings are the most common causes. Ensure all parts are well-grounded and the gun’s charge is set correctly.

Q8: How long does powder coating last?
With proper surface preparation and curing, powder coating can last up to 20 years, providing superior corrosion and weather resistance compared to liquid paint.

Q9: Is powder coating rust-proof?
Yes — powder-coated steel is highly resistant to rust. However, surface damage may allow moisture to penetrate, so inspection and maintenance are important for outdoor applications.

Q10: Does powder coating last under sunlight?
Yes, but UV exposure can cause “chalking” over time. Using UV-stable outdoor-grade powders significantly extends color retention and finish life.

3. Testing & Quality Control

To evaluate coating quality, professionals use:

Adhesion test (Crosshatch)

Impact and bend tests

Salt spray corrosion test

Film thickness measurement

Solvent cure test

A high-quality coating provides a smooth, uniform surface without rough texture or powder drop-off.

4. Benefits of Using Powder Coating Reciprocator 

Superior durability and scratch resistance (up to 4H hardness)

Chemical and weather resistance for long-lasting protection

Consistent coating thickness with minimal overspray

Energy-efficient, clean, and eco-friendly operation

Perfect for metal, aluminum, steel, and industrial components

5. Is a Powder Coating Reciprocator Worth It?

Absolutely. A Haztek powder coating reciprocator ensures higher productivity, lower material waste, and superior finish quality. It’s an investment that pays off through efficiency, reliability, and long-term durability — ideal for industrial coating lines worldwide.