Block Magnets for HVAC Linear Actuator Production Line

Problem

An Australian HVAC manufacturer used N35 block magnets in linear actuators that control damper positions in commercial building ventilation systems. Their existing supply chain had two problems:

1. Cost: Buying through a local Australian distributor at retail markup
2. Scale: The distributor could not guarantee consistent stock above 500 pcs/month as production ramped up

They needed a direct supply relationship that could scale to 10,000 pcs/month while reducing per-unit cost.

Solution

We established a direct sourcing relationship with a Ganzhou factory producing standard-grade NdFeB block magnets.

Key optimizations:

• Blanket order agreement: 6-month forward commitment with monthly releases
• Standard grade selection: N35 (no need for high-temp grades in HVAC environment)
• Zinc coating: Cost-effective for indoor, non-corrosive HVAC environment
• Bulk packing: Row-packed in divided trays for direct assembly line use

Specifications

• Material: NdFeB (N35)
• Shape: Block
• Dimensions: 20 × 10 × 5 mm
• Tolerance: ±0.05 mm (standard)
• Coating: Zinc
• Magnetization: Through thickness (5mm direction)
• Volume: 10,000 pcs/month (ramped from 500)

Results

• Unit cost reduced by 18% compared to distributor pricing at equivalent volume.
• Successfully scaled from 500 to 10,000 pcs/month over 3 months.
• Zero rejection rate over 6 consecutive shipments (60,000 pcs total).
• Delivery consistently within 2–3 weeks of order confirmation.

Next Steps

Share your actuator drawing and monthly volume forecast. We will provide pricing tiers and a ramp-up schedule aligned to your production plan.