How to Identify Bonfiglioli Products Fast: A 6-Step Checklist for Urgent Orders

If you're reading this because a machine is down or an OEM deadline is closer than you'd like, you're in the right place. In my role coordinating urgent motion-control orders for a distribution company, I've handled more than 200 rush orders over the past six years. This is the checklist I use when a customer calls and needs a Bonfiglioli product identified before their plant stops waiting. It's not a textbook process. It's what actually works.

Who This Checklist Is For

This is for anyone who needs to find a Bonfiglioli gearbox, gear motor, or servo component quickly, without the luxury of a six-week lead time. Whether you're a maintenance manager, a purchasing agent, or an integrator who underestimated a deadline, these six steps will get you to a usable product code and a supplier who can quote it fast.

Step 1: Go Straight to the Bonfiglioli Motor Catalogue PDF

Don't start with a general web search. Start with the Bonfiglioli motor catalogue PDF. It took me about 150 orders to understand this: the official PDF is faster than any image search or distributor portal for identifying the exact product.

Search the phrase 'bonfiglioli motor catalogue pdf' and open the PDF file from a trusted source. Then use Ctrl+F to search for terms like 'planetary,' 'worm,' 'helical,' 'servo,' or the model number printed on your current motor. A catalog PDF page has ratings, dimensions, and optional features all in one place. That matters when you're in a hurry.

(Should mention: some PDF files are large. In March 2024, I spent 20 minutes waiting for a slow PDF when a 36-hour deadline was on the line. The client needed a replacement for a Bonfiglioli servo gearbox. The official catalog page had the exact flange dimensions, and we made the order. I should add that we now keep a local PDF copy on a shared drive.)

Step 2: Identify the Bonfiglioli Product Family First

Bonfiglioli products are not one-size-fits-all. The main families include:

• Planetary gearboxes – compact, high torque density, often used in mobile equipment and servo applications.
• Worm gear reducers – right-angle, self-locking in some ratios, simple and economical.
• Helical / parallel-shaft reducers – inline or parallel shafts, high efficiency.
• Bevel / right-angle gearboxes – input and output shafts at 90 degrees.
• Geared motors and AC servo motors – motor and gearbox integrated for motion control.

Take a photo of the nameplate before you do anything else. If the nameplate is damaged, take a side-view photo. Visual reference matters more than people think. If you're not sure whether the motor is a servo or a standard AC motor, search 'servo motor image' and compare the connectors, encoder cable, and mounting pattern. A servo motor image is useful because servo motors often have a different flange and feedback connector than an induction motor.

Step 3: Answer the Spur Gear Question Before You Search

Here's the keyword that always trips people up: which gear is most likely to use a spur gear?

The wording is a little strange. The straightforward answer is: a spur gear. A spur gear is the gear component itself. It's most likely to be used in a parallel-shaft gear train when you need simple, low-cost speed reduction. If you're asking which Bonfiglioli product family that points to, look at a parallel-shaft reducer or a low-cost gearmotor. A planetary unit uses sun and planet gears. A worm unit uses a worm and wheel. A bevel unit handles a right-angle drive. Spur gears are the straight-teeth workhorses of parallel shafts.

Let me rephrase that to avoid confusion:

• Spur gears have straight teeth and connect parallel shafts.
• Helical gears are similar but have angled teeth for quieter, smoother operation.
• A planetary gearbox uses planet gears around a sun gear – that's a different arrangement.
• A worm gearbox uses a worm shaft and worm wheel for right-angle drives.

So, if someone tells you 'it uses a spur gear,' the gear family to start with is the parallel-shaft reducer, or any gear train where the input and output shafts are parallel. If you see the phrase 'which gear is most likely to use a spur gear?' in a quiz or selection guide, the answer to look for is 'a spur gear is used for parallel shafts.' Don't overcomplicate it.

Step 4: Check Torque, Ratio, and Motor Type

Once you have the right product family, don't order by size alone. You need three numbers:

1. Output torque – in Nm. This is what determines whether the gearbox can handle the load.
2. Ratio – input speed divided by output speed. A wrong ratio is the most common reason for an emergency reorder.
3. Motor type – if the order includes a motor, decide between a standard AC motor, a geared motor, or an AC servo motor.

AC servo motors are different from standard induction motors. They're built for precise positioning, faster response, and controlled motion. If the application is a servo-driven indexing table or a robotic axis, you need the servo motor section of the Bonfiglioli catalog, not the standard geared motor section. An AC servo motor has a feedback encoder, a brake option, and a servo drive match. A standard AC motor doesn't. The servo motor image in the catalog can help you confirm the connector and flange arrangement.

When I'm triaging a rush order, I ask for a photo of the motor nameplate plus the gearbox nameplate. 'Servo motor' written on the motor doesn't tell you the torque rating. The catalog page number and the product code from the PDF do.

Step 5: Ask 'What's NOT Included' Before You Approve a Quote

This step has saved me more than once. I've learned to ask 'what's NOT included' before 'what's the price.' Because in a rush order, the last thing you need is a surprise surcharge for an output flange, a brake, or overnight freight.

A transparent quote will list all the extras upfront. The vendor who lists all fees upfront – even if the total looks higher – costs less in the end. The person who gives you a low price and says 'we'll sort out the adapter later' is the reason you end up paying a second rush fee later in the week.

One of my earliest mistakes was choosing a compatible replacement gearmotor because it was $200 less than the Bonfiglioli unit. It failed after 30 days, and the emergency replacement cost us $850 in freight and overtime plus the original $200. The 'budget vendor' choice looked smart until we saw the quality. Net loss: over $1,000 on a part that wasn't even the right fit.

Step 6: Send the PDF Page Number and a Photo to the Distributor

When you've narrowed it down, contact a Bonfiglioli distributor or the local engineering support team. Don't just say 'I need a Bonfiglioli gearbox.' Send:

• The catalogue page number or a screenshot of the product code from the PDF.
• A photo of the old nameplate and the motor image if you have it.
• The exact delivery deadline and whether you need a brake, special seal, or different mounting position.

In a true emergency, this information is worth more than a phone call. In February 2024, a client called at 4:00 PM needing a Bonfiglioli planetary gearbox for a packaging line that had to restart in 48 hours. Normal turnaround was 12 business days. We sent the catalog PDF page and a nameplate photo to the regional distributor, paid a 35% rush premium, and the gearbox was on a truck the next morning. The client's alternative would have been a $50,000 penalty clause for late delivery of their own order.

We paid extra in rush fees – no question. But the cost of not acting was far worse. Based on our internal data from more than 200 rush jobs, the extra 20 minutes spent documenting the product correctly saves roughly two days of return-and-reorder time.

Common Mistakes to Avoid

• Ordering from a photo without a nameplate. A servo motor image can look almost identical to an induction motor if you ignore the feedback cable and flange dimensions.
• Mixing up servo and standard AC motors. AC servo motors need matching drives. You can't always use a standard geared motor as a drop-in replacement.
• Skipping the ratio check. The gearbox might look like the same model, but a 10:1 ratio and a 20:1 ratio have the same mounting footprint. Whether the part uses a spur gear is a good memory test, but the ratio is the question that actually avoids a return.
• Ignoring the catalogue PDF. The official Bonfiglioli motor catalogue PDF, as of January 2025, is still the most reliable single source for dimensions and ratings. Use it before you call a distributor, even when you're in a hurry.

Final Note

Honestly, I'm not sure why some people avoid using the official PDF. My best guess is they think it's faster to ask someone. Sometimes it is. But for finding a Bonfiglioli product, the PDF plus a photo of the nameplate is the fastest documented path I know. If someone has a better way, I'd love to hear it.

Now go take the photo, download the PDF, and make the call.