CNC machining rack and pinion precision casting service for greenhouse ventilation

Product Overview :

Our CNC Machining Rack and Pinion Precision Casting Service delivers high-performance, durable gear systems designed specifically for automated greenhouse ventilation. Combining precision casting with CNC machining, we produce rack and pinion mechanisms that ensure smooth, reliable operation in greenhouse roof and side vent systems.

Product parameters:

1. Material Specifications

• Base Material:
  • Carbon Steel (AISI 1045, 4140) – High strength, cost-effective
  • Stainless Steel (SS304, SS316) – Superior corrosion resistance
  • Optional Coatings: Hot-dip galvanized, zinc-plated, or PTFE for harsh environments
• Hardness: HRC 40-50 (heat-treated for wear resistance)

2. Dimensional & Tolerance Standards

• Rack Gear:
  • Module: 1.0 – 6.0 (customizable)
  • Length: Up to 3000mm (standard), longer lengths on request
  • Straightness Tolerance: ≤0.1mm/m
• Pinion Gear:
  • Teeth: 10 – 50 (standard)
  • Bore Diameter: 6mm – 50mm (keyway/spline available)
  • Precision Grade: DIN 6-8 (AGMA 10-12 equivalent)
• Backlash: Adjustable (standard: <0.05mm)

3. Performance Parameters

• Max Load Capacity: 50–500 Nm (depends on gear ratio/material)
• Operating Speed: 10–200 RPM (optimized for low-speed solar actuators)
• Efficiency: ≥92% (helical), ≥88% (spur)
• Lifespan: >100,000 cycles (under proper maintenance)

Key Features & Benefits :

✔ High-Precision Manufacturing – Tight tolerances (±0.02mm) for seamless gear engagement and minimal backlash.
✔ Superior Material Options – Carbon steel (AISI 1045/4140), stainless steel (SS304/316), or galvanized coatings for corrosion resistance.
✔ Optimized for Greenhouse Use – Weather-resistant design withstands humidity, UV exposure, and temperature fluctuations.
✔ Customizable Designs – Tailored gear modules, lengths, and tooth profiles to fit specific ventilation systems.
✔ CNC-Machined Finish – Ensures smooth operation, reduced friction, and extended lifespan.

Applications :

• Motorized greenhouse roof vents

• Side ventilation automation

• Solar-powered vent openers

• Shade system drives

FAQ:

1. What materials do you offer for rack and pinion systems?

• Carbon Steel (AISI 1045/4140) – High strength, cost-effective

• Stainless Steel (SS304/316) – Corrosion-resistant for humid environments

• Galvanized/Zinc-Coated Options – Enhanced rust protection

• Nylon/Plastic (Optional) – For noise reduction or lightweight needs

2. What’s your manufacturing process?

• Precision Investment Casting (for complex shapes)

• CNC Machining (hobbing/grinding for ±0.02mm accuracy)

• Surface Treatment (galvanizing, heat treatment, etc.)

3. What tolerances do you guarantee?

• Gear Teeth: DIN 6-8 grade (±0.02mm)

• Backlash: <0.05mm (adjustable)

• Straightness (Rack): ≤0.1mm/m

4. How do you ensure corrosion resistance?

• Hot-dip galvanizing (ISO 1461) or electroplating

• Stainless steel options for extreme conditions

• Salt spray test ≥500 hours (ASTM B117)

5. Can you customize gear ratios/sizes?

• Module (1.0–6.0)

• Rack length (up to 3m+)

• Bore size/keyway specs

• Tooth profile (spur/helical)

6. What’s your lead time?

• Bulk Orders: 30–40 days (depends on quantity)