FAQ

Orders placed by 11:00 AM ship the same business day; orders received after that cut-off ship the next business day. Standard delivery is 3 business days within Italy and 5 business days to the rest of Europe. Islands and remote areas may require an additional 1–2 business days.

Yes. As soon as your order is handed over to the carrier, you’ll receive an automated email with a real-time tracking link so you can monitor your shipment at every step.

We ship across the entire European Union, as well as to San Marino and Vatican City. Shipping costs and transit times are calculated automatically at checkout based on weight and destination.

We accept all major credit and debit cards (Visa, Mastercard, American Express, Maestro), digital wallets, and PayPal. At checkout you’ll be redirected to your chosen payment provider’s secure page to complete the transaction via SSL encryption.

Yes. If your company is registered in the VIES database, our system will automatically strip VAT from your cart once your intra-community VAT number has been verified.

Yes. You have 14 days from delivery to request a return, provided the product has not been mounted or machined and is returned unused in its original packaging. We’ll send you a prepaid return label, returns are free of charge.

If there’s a picking error on our end, simply request a return and indicate the reason. Once we receive the incorrect item, we’ll ship the right one immediately.

Yes, for orders of 50 pieces or more. All our standard products can be customised with bore machining or keyway cutting. Submit a quote request via the contact form and our technical team will get back to you promptly.

Our technical team can provide general guidance on material compatibility. For more complex calculations, we offer online guides and interactive tools: visit our Technical Hub to use the power and centre distance calculators.

Shipping costs are calculated automatically at checkout based on weight, volume, and destination. Orders over €100 qualify for free shipping.

POM-C offers excellent dimensional stability, low friction, and good performance at high rotational speeds. PA6+30%GF delivers superior mechanical strength but is sensitive to high speeds and moisture absorption. Polyketone provides enhanced chemical resistance. Visit our Tech Centre for a full comparison of mechanical properties.

20° is the value that best balances tooth strength, low noise, bearing load, and ease of manufacture for the vast majority of industrial applications.

It depends on the application. Polymer gears have different torque and temperature limits compared to steel. For guidance tailored to your specific use case, contact our technical team at shop@stagnoli.com.

Below 17 teeth, undercutting may occur: the tooth root narrows, weakening the gear structure. In these cases, profile correction via a shift coefficient is required. Contact our technical team at shop@stagnoli.com for further information.

No. Minor internal voids are a natural by-product of the injection moulding process. They form at the core of the part and do not affect tooth integrity.

Using the straightforward formula: PD = Module × Number of Teeth.

While they can run dry, applying a suitable grease reduces friction, dissipates heat, and significantly extends component service life.

The elastic nature of the material absorbs vibrations, reducing noise levels by approximately 10–15 dB compared to steel gears.

Absolutely. Polymer gears can be turned or milled, but it’s essential to clamp on the tooth profile, not the bore, and to avoid overheating during cutting. Alternatively, for orders of 50 pieces or more, we can add custom machining to your order. Visit our Tech Centre for recommended cutting parameters and speeds.

The Mounting Distance is the axial position at which each bevel gear must be set relative to the pitch cone apex, ensuring correct tooth contact. Visit our Tech Centre for the correct assembly diagram.

Yes, this is a common and effective combination: the steel pinion dissipates heat more efficiently, while the polymer rack ensures quiet operation and corrosion resistance.

Select by chain code (ISO standard). Polymer tensioner sprockets are an excellent choice for dry-running applications and environments where chemical resistance is required.

As temperature rises, tooth dimensions increase due to thermal expansion. If initial backlash is insufficient, the gears may seize. Visit our Tech Centre to calculate the correct flank clearance for your operating temperature.

Yes. They act as shock absorbers, dampening torque peaks and compensating for minor shaft misalignment.

A simple assembly check: slide a strip of paper between the meshing gears during installation to verify that the minimum clearance required for thermal expansion is present.

We stock materials compliant with FDA regulations and EU Regulation 10/2011. Visit our Tech Centre to download the relevant compliance certificates.

A design strategy in which the pinion, being the least expensive and easiest component to replace, is intentionally engineered as the weakest link, protecting the motor or the entire machine in the event of a sudden jam.

Inspect the tooth surfaces regularly. Plastic dust, heat streaking, or pitting are all warning signs that the load is excessive and the gear is under stress.

It depends on the material. POM-C resists a wide range of cleaning agents, but PA6 can be attacked by certain acids. Visit our Tech Centre to consult the full chemical resistance chart.

Each product page on our webshop includes a link to the 3D model, available for download on TraceParts.