Precision Fine Blanking Parts Collection This is a family of stamped components produced by fine blanking—a process that yields a fully sheared, smooth edge in one stroke. You get tolerances of ±0.0
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Precision Fine Blanking Parts Collection This is a family of stamped components produced by fine blanking—a process that yields a fully sheared, smooth edge in one stroke. You get tolerances of ±0.0
This is a family of stamped components produced by fine blanking—a process that yields a fully sheared, smooth edge in one stroke. You get tolerances of ±0.005 mm, a surface finish down to Ra 0.4 µm, and parts that hold their shape without secondary deburring. Lead time is 7 days for standard blanks, and we ship worldwide from our Dongguan factory.
Conventional stamping leaves a break zone—rough, torn edges that require extra machining or hand finishing. Fine blanking uses a third force (counter-pressure) and a V-ring die to suppress fracture. The result: 100% sheared surfaces, no break line, and a dimensional repeatability of ±0.005 mm across the entire batch. If you are designing gear plates, clutch discs, or locking levers, this is the difference between a part that fits and one that fails at 10,000 cycles.
We stock 11 grades—from low-carbon SPCC to spring steel C75S and stainless 304/316. For high-wear applications, we apply vacuum hardening to reach 45–52 HRC (depending on alloy) with a distortion under 0.02 mm. If you need a specific yield strength, we can adjust the tempering curve. All material certificates are traceable to the mill heat number.
Our fine blanking dies are ground to a clearance of 0.5% of material thickness (typical industry is 5–10%). That means your part’s edge is straight—not tapered—with a die-roll zone of only 0.05 mm (vs. 0.3 mm on conventional presses). Flatness is held to 0.02 mm over 100 mm length. We verify this with a CMM and optical comparator on every first article.
We handle blanks from 3 mm to 250 mm in diameter, with material thickness from 0.5 mm to 8 mm. Maximum press force is 400 tons. Common geometries: external teeth, internal splines, cam profiles, and oval holes. We also add coining or semi-piercing in the same tool—so you get a finished feature without a second operation.
Every lot goes through a 3-stage check: in-process (every 30 minutes), first-article (full CMM report), and final (sampling per AQL 2.5). We measure critical dimensions to ±0.005 mm, surface roughness with a profilometer, and hardness with a Rockwell tester. You receive a PDF report with all data—no exceptions.
| Parameter | Value / Range |
|---|---|
| Material thickness | 0.5 mm – 8.0 mm |
| Blank diameter | 3 mm – 250 mm |
| Dimensional tolerance | ±0.005 mm |
| Edge finish (Ra) | 0.4 µm – 0.8 µm |
| Die-roll zone | ≤ 0.05 mm |
| Flatness | 0.02 mm / 100 mm |
| Hardness (optional) | 45 – 52 HRC |
| Lead time (standard) | 7 days |
| MOQ | No MOQ (1 piece accepted) |
| Press capacity | Up to 400 tons |
For a new fine blanking part, the die set runs $3,000–$8,000 depending on complexity. But if you are testing a design, we offer a soft-tooled prototype route: we use wire EDM to cut the blank shape, then finish with CNC milling—no hard die needed. That gets you 5–20 pieces in 5 days, and you can validate fit before committing to production tooling. This is the fastest way to move from CAD to a physical part.
Many fine blanking parts need one or two secondary operations—threading, countersinking, or a precise hole. If you are doing that in-house, match your tool geometry to the hardness of our blanks. For 45 HRC steel, use carbide end mills with a 45° helix; for stainless, opt for a TiAlN coating. See our CNC cutting tool selection guide for a full breakdown of feeds and speeds.
If you are assembling three or four fine blanking parts into a sub-assembly, each ±0.005 mm adds up. Conventional stamping gives ±0.1 mm—that’s 20x looser. Over a 4-part stack, your worst-case gap is 0.4 mm vs. our 0.02 mm. That is the difference between a silent gearbox and a rattling one. For a deeper dive into how tolerances affect fit, read our CNC machining tolerances guide.
No MOQ—we accept 1 piece for prototypes and scale to 1 million per year without changing the process.
Yes—we source any cold-rolled or annealed strip from our mill network and adjust the heat treatment to hit your specified HRC.
We use a 3D CMM (Zeiss) and a digital profilometer on every first article, plus in-process checks every 30 minutes during the run.
7 days for standard blanks from existing tools; 15–20 days if a new die is required (including tool build and sampling).
Send your drawing for a firm quote within 12 hours. Email sc@bquq.com or WhatsApp +86 13713157787. We reply with a price, tooling cost (if any), and a delivery date—no generic lead times.
| Parameter | Capability |
|---|---|
| Materials | SPCC, SGCC, SUS301/304/316, brass, copper, beryllium copper, phosphor bronze |
| Process | Progressive die stamping, fine blanking, deep drawing, bending, tapping |
| Tolerance | ±0.01mm standard, ±0.005mm on request |
| Surface | Zinc plating, nickel, tin, gold, powder coating, passivation, anodizing |
| Die Size | Up to 1200 x 800 mm, 16-250 ton presses |
| Thickness | 0.05 - 6.0 mm sheet metal, wire 0.1 - 8.0 mm |
| Prototype | 7-15 days tooling, no MOQ on samples |
| Inspection | Full report per batch, CMM and optical measurement |
