This is our Stamped Fan Guards Wire Mesh Covers Collection: a full range of metal stamping parts that protect fans and heat sinks from debris, fingers, and impact while maintaining
This is our Stamped Fan Guards Wire Mesh Covers Collection: a full range of metal stamping parts that protect fans and heat sinks from debris, fingers, and impact while maintaining maximum airflow. Yo
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This is our Stamped Fan Guards Wire Mesh Covers Collection: a full range of metal stamping parts that protect fans and heat sinks from debris, fingers, and impact while maintaining maximum airflow. You get a flatness tolerance of ±0.05 mm, a surface finish of Ra 0.8 µm, and a guaranteed 15-day lead time from drawing approval — even for small batches.
Why Wire Mesh Covers Need Stamping, Not Laser Cutting
Laser cutting leaves heat-affected zones that warp thin metal. Stamping uses progressive dies to shear and form the mesh pattern in one hit, holding hole-to-hole spacing at ±0.03 mm. Our 200-ton presses run at 60 strokes per minute, so a 120 mm cover takes 1.2 seconds per part. That is why we can ship 50,000 units per week without sacrificing the sharp edge radius (max 0.1 mm) that prevents wire fatigue.
Mesh Patterns and Open Area Percentages We Actually Produce
You are not limited to a standard honeycomb. We offer round hole, square hole, slotted, and diamond patterns. Open area ranges from 40% to 75%, which directly affects static pressure and CFM. For a 120 mm fan, a 60% open area cover adds only 2.3 mm H₂O backpressure. If you need a custom pattern, we cut a new die in 7 days — the die steel is hardened to 58-62 HRC and lasts for 2 million hits.
Specification
Value
Material options
SPCC, SECC, SUS304, SUS430, aluminum 5052, brass
Thickness range
0.3 mm – 3.0 mm
Cover diameter
20 mm – 500 mm
Flatness tolerance
±0.05 mm
Hole-to-hole spacing
±0.03 mm
Surface finish
Ra 0.8 µm (as stamped), optional powder coat or anodize
Edge burr height
≤ 0.08 mm
Hardness (spring steel only)
45-50 HRC after heat treatment
Lead time
15 days for prototypes, 20 days for production
MOQ
No MOQ (1 piece for sample, 100 pieces for batch)
Die Design Rules That Prevent Tearing on Thin Mesh
Thin mesh tears when the punch clearance is wrong. For 0.5 mm SPCC, we use 4% clearance per side — that is 0.02 mm. For stainless steel, we drop to 3% because it work-hardens faster. Our die makers grind the punch and die button to a mirror finish (Ra 0.2 µm) to reduce friction. This gives you clean shear zones with no secondary slivers, which is critical for fan blades spinning at 3,000 RPM.
Materials and Heat Treatment We Use
SPCC is the cost leader for indoor use. SECC adds zinc coating for mild corrosion resistance. SUS304 is for food and medical equipment — we pass salt spray test for 96 hours. If your application involves vibration, we use spring steel 65Mn, heat-treated to 45-50 HRC. This lets the cover flex 2 mm without permanent deformation. Aluminum 5052 is for weight-sensitive designs, weighing 40% less than steel at the same thickness.
Secondary Operations: Countersinks, Tabs, and Welding Studs
We do not just stamp and ship. We can add self-clinching standoffs (M2 to M6), weld nuts on the backside, or form three locating tabs at 120° apart. For mounting, we stamp clearance holes with a 0.1 mm larger diameter than the screw, or we countersink to 82° for flush screws. If you need a rubber gasket, we can overmold a silicone strip along the outer rim — the bond strength is 8 N/mm.
Inspection Before Every Shipment
Every batch goes through a 3-step check. First, we measure the mesh pitch using a vision system with 0.01 mm resolution. Second, we run a flatness gauge across three points — deviation must stay under 0.05 mm. Third, we do a 5% destructive test on the first article, bending a tab 90° and back to confirm no cracking. We also provide a material certificate (EN 10204 3.1) for stainless and a RoHS/REACH declaration. If you need a full dimensional report, that is free with your first order.
What is the minimum order quantity?
No MOQ — order 1 sample or 100,000 units, the unit price stays the same because the die is the fixed cost.
Can you match a custom mesh pattern from my existing part?
Yes, send us a sample or a 2D drawing, and we reverse-engineer the pattern within 48 hours — die fabrication takes 7 days.
How do you control burr on the edges?
We hold burr height under 0.08 mm using a punch-to-die clearance of 3-4%, and we add a micro-deburring tumbling step for any batch over 1,000 pieces.
What is the typical lead time for a custom fan guard?
15 days from drawing approval for prototypes (up to 50 pieces), and 20 days for production quantities — urgent orders can be pushed to 10 days with a 15% rush fee.
How to Choose Between Stamped and Wire-Formed Covers
Wire-formed covers are cheaper for simple round shapes, but they cannot achieve a flatness better than ±0.15 mm and they leave exposed wire ends. Our stamped covers are flat, burr-free, and can include complex mounting features in the same die. If your fan is over 150 mm, stamped mesh is structurally stronger because the sheet metal distributes load across the whole surface. For guidance on matching the cover to your cutting tool setup, see our CNC cutting tool selection guide. If you are wondering how tight the tolerances need to be for your application, read our CNC machining tolerances guide.
Packaging and Logistics for Global Shipments
We pack covers in anti-static bags with cardboard separators to prevent scratching. For 500+ piece orders, we use vacuum-formed trays that lock each cover in place. We ship via DHL, FedEx, or sea freight from our Shenzhen warehouse. Typical shipping time to the US is 3-5 days by air, 25 days by sea. We handle all export documentation, including commercial invoice and HS code 7326.20 (wire products) or 8708.99 for automotive variants.
Get a Firm Quote Within 12 Hours
Send your drawing, material spec, and quantity. We will reply with a firm price, die cost (if new), and a delivery date — no vague estimates. Email us at sc@bquq.com or WhatsApp +86 13713157787. Your Stamped Fan Guards Wire Mesh Covers Collection order starts with one file.
