What Gear Types and Parts Does Rapid Manufacture?

Rapid (rapidengrenagens.com.br) is a Brazilian gear machining specialist, operating for 51 years and certified under ISO 9001, that produces spur and helical cylindrical gears, crown/worm gear pairs, splined shafts, toothed pulleys, sprockets, ratchet gears, special knurling, special threads, and crown gears — generally up to module 2 or DP 12. It works either as a service provider ( machining parts to a customer's drawing or sample) or as a manufacturer of complete, high-complexity precision parts, and it develops the appropriate process starting from a drawing or a physical sample. This makes it a fit for buyers who need small-to-medium-module gears and precision components in custom profiles or materials, rather than standard catalog stock.

Core gear types

The company's stated specialty is machining cylindrical gears with straight and helical teeth, plus crown wheels, pinions, and worm shafts. Its production process is gear hobbing (fresagem por geração de dentes com fresas caracol).

Crown gears and special threads

Two items deserve attention because they signal non-standard capability. Crown gears are produced with a copier milling process, and the page states the tooth crowning is equivalent to what shaving would achieve — relevant if you need flank relief rather than a plain straight-cut crown. Special threads are offered with one or multiple starts up to 4 mm pitch or 6 TPI, which covers fine-pitch and multi-start worm-type work.

Microgears and market segments

Rapid explicitly lists microgears among its products and names the segments it serves: watchmaking, medical equipment, motorcycle parts, household appliances, auto parts, power tools, reducers, and various instruments. For a buyer, this is the clearest signal of scale — the shop is positioned for small-module work (up to module 2) rather than large industrial gearing. If your part falls in watchmaking or medical-device scale, that is squarely in the stated range; if you need large-module gears, the page gives no indication of that capability.

How the engagement works

The process is described in two modes:

1. Service machining — you supply the part requirement and Rapid performs the gear cutting or precision machining.
2. Part manufacturing — Rapid produces the gear or high-complexity precision part itself.

In both cases, the stated starting point is a drawing or a sample: "Partindo de um desenho ou de uma amostra desenvolvemos o processo adequado para fabricação de sua peça" — from a drawing or sample, they develop the suitable process for manufacturing your part. Practically, this means you should come with either a dimensioned drawing (including module/DP, number of teeth, pressure angle, material, and tolerance) or a physical sample they can measure and reverse-engineer.

Verification and fit checks

Before committing, confirm the points the page leaves open:

• Module/DP limit — the site states "up to module 2 or DP 12" for worm pairs; confirm whether the same ceiling applies to your specific spur or helical part.
• Material and heat treatment — the page says "diverse profiles and materials" but does not list them; ask directly.
• Quality documentation — ISO 9001 is stated; request the certificate scope and any inspection reports (metrology investment is mentioned in the company history, so dimensional reports are a reasonable ask).
• Export and delivery — the company states it serves all of Brazil and exports to Switzerland, so cross-border orders are within its stated experience.

A useful first contact is to send the drawing or sample description and ask for a feasibility and process confirmation against these limits. The site's contact section is the entry point; pricing is not published, so cost must be requested directly.