What This Product Is and Why Packaging Lines Stall Without It These are CNC machined components—brackets, guides, rollers, cam plates, and wear strips—built for the constant start-stop shocks and wa
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What This Product Is and Why Packaging Lines Stall Without It These are CNC machined components—brackets, guides, rollers, cam plates, and wear strips—built for the constant start-stop shocks and wa
These are CNC machined components—brackets, guides, rollers, cam plates, and wear strips—built for the constant start-stop shocks and washdown environments of packaging lines. You get a repeatable tolerance of ±0.005 mm on critical bores, a runout of 0.008 mm max on cylindrical features, and surface finish down to Ra 0.4 µm. Our standard lead time is 7 business days for prototypes, 12 days for production runs, with hardness options up to 58 HRC after heat treatment. This means your machine stops drifting out of spec, and your product changeovers stay on schedule.
Guide rails and rollers on carton sealers fail when the surface finish is too rough—film jams, glue skips, and case erectors misfeed. We machine these parts from 6061-T6 aluminum or 304 stainless steel, then hard-anodize the aluminum to 60 HRC equivalent on the bearing surface. For rollers, we hold concentricity between the bore and outer diameter to 0.005 mm total indicated runout. That eliminates the wobble that causes uneven glue lines. We also deburr every edge to 0.1 mm max radius, so film or tape never snags. If you need a non-standard width, we cut it directly from bar stock—no tooling surcharge.
Packaging lines get hosed down with caustic cleaners daily. So we offer 316L stainless for parts that touch food or chemicals, and 17-4 PH stainless for high-strength cam plates that need 40-45 HRC without losing corrosion resistance. For dry-side parts like brackets and sensor mounts, we use 6061-T6 aluminum with clear anodize—lighter and cheaper to ship. Heat treatment is done in-house: we austenitize, quench, and temper to your exact hardness spec, then verify with a Rockwell tester on every batch. No skipped steps, no soft spots.
Every CNC machined packaging machinery part leaves with a dimensional report generated from a coordinate measuring machine (CMM). We check all critical dimensions—bore diameters, hole positions, flatness, and perpendicularity—against your drawing. For runout-critical parts, we use a V-block and dial indicator to verify the 0.008 mm spec. You get a PDF report with the actual measured values, not just a pass/fail stamp. If a dimension is out of spec, the part is scrapped, not reworked. This is why our customers in pharma and food packaging rarely see line stoppages due to a bad component.
We keep 2,000 kg of 6061, 304, and 316L bar stock in standard diameters ready to cut. For prototypes, there is no MOQ—order one piece, we machine it in 5 days. For production, we accept batch sizes from 10 to 100,000 pieces. Our CNC lathes and 3-axis/5-axis mills run 24/7, so a typical 500-piece order of roller shafts ships in 10 days. If you have a rush, we can split the order and ship the first 100 pieces in 5 days, the rest in 12. We quote every job within 12 hours of receiving your drawing.
Packaging parts often have thin walls—like sensor brackets with 1.5 mm walls and deep bolt holes. Thin walls can flex during machining, causing chatter and oversize bores. We counter this by using custom fixturing that supports the part from underneath, and we reduce cutting speed by 20% on the final pass. For deep pockets (depth-to-width ratio over 3:1), we use variable-flute end mills to avoid vibration. This is where the CNC cutting tool selection guide helps you understand why we choose specific tool geometry for your part. We also pre-drill pilot holes before reaming to control hole position to ±0.005 mm.
Each shipment includes a material certificate (mill test report) for the raw bar stock, the CMM inspection report, and a certificate of conformity. We laser-mark every part with a unique serial number and the BQUQ logo. This gives you full traceability back to the heat number of the metal. For FDA-line applications, we can provide a food-grade finish certificate on request. We pack parts in anti-corrosion VCI paper and foam-lined cartons to prevent scratching during freight. For large rollers, we use wooden crates with foam cradles.
| Specification | Value / Range |
|---|---|
| Materials | 6061-T6, 7075-T6, 304, 316L, 17-4 PH, POM, PTFE |
| Max part size | 850 mm x 400 mm x 300 mm (CNC mill), Ø300 mm x 500 mm (CNC lathe) |
| Hardness (after heat treatment) | Up to 58 HRC (17-4 PH, 4140), 60 HRC equivalent (hard anodize) |
| Standard tolerance | ±0.005 mm on machined bores, ±0.01 mm on linear dimensions |
| Runout (cylindrical parts) | 0.008 mm total indicated runout (TIR) |
| Surface finish | Ra 0.4 µm (mirror), Ra 0.8 µm (standard), Ra 1.6 µm (as-machined) |
| Lead time (prototype) | 5 business days (1-10 pcs) |
| Lead time (production) | 10-12 business days (up to 1,000 pcs) |
| MOQ | No MOQ for prototypes; production from 10 pcs |
| Inspection equipment | CMM (ZEISS), Rockwell hardness tester, surface profilometer |
There is no MOQ for prototypes—we machine a single piece if that’s all you need; production orders start at 10 pieces.
Yes, we accept STEP, IGES, PDF, or even a hand-drawn sketch; our engineers check for manufacturability and flag any tolerance conflicts before quoting.
We use in-process gauging every 50 pieces plus a final CMM inspection on a sample of 5 parts, and we provide the actual measured data in your shipment report.
If the material is in stock and the geometry is simple (bracket, plate, bushing), we can ship in 48 hours using our express CNC cell, but that service carries a 30% surcharge.
Stop guessing if your packaging line parts will fit. Send us your drawing with critical dimensions and tolerances, and we will reply within 12 hours with a firm unit price, confirmed lead time, and a suggestion for material if your drawing doesn’t specify one. All our CNC machined packaging machinery parts are made in China at our 20,000 m² Dongguan factory, with 20 years of export experience. We handle the logistics, customs paperwork, and door-to-door shipping to your plant. Email your PDF or STEP file to sc@bquq.com, or message us on WhatsApp at +86 13713157787. For a deeper look at how we set tolerances, read our CNC machining tolerances guide—it explains what we can hold on your specific feature. For tool selection on thin-wall parts, the CNC cutting tool selection guide covers the end mills we recommend. Send your drawing now—a same-day quote is free, and you keep your line running.
| Parameter | Capability |
|---|---|
| Materials | AL6061/7075, SUS303/304/316, 45# steel, T2 copper, H59 brass, POM, PEEK, nylon |
| Tolerance | ±0.005mm standard, ±0.003mm on request |
| Machines | 3/4/5-axis CNC, turn-mill, Swiss lathe |
| Surface | Anodizing, nickel, zinc, passivation, sandblast, polish |
| Size Range | Max 400 x 300 x 200 mm |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Full report per batch, CMM data on request |
