I'm the person who handles the motor orders for our automation shop. Not an engineer—I'm the office administrator who says yes to purchase orders and no to overtime shipping. After managing 60 to 80 orders a year for the last five years, I've learned enough to answer the questions our customers ask. Here's the FAQ I wish I'd had before my first maxon-motor purchase.

Quick links:

1. What's the difference between a maxon brushed DC motor and a maxon EC motor?

Both are permanent magnet DC motors, but they're different animals. A brushed DC motor has physical brushes that transfer current to the rotor. That makes it cheap, simple to control, and fine for low-torque, short-life jobs. But brushes wear out, and they create tiny sparks. An EC motor (electronically commutated—i.e., brushless) replaces those brushes with electronic switching. The result: longer life, less noise, and higher efficiency. I compared the datasheets side by side once (same torque, similar speed) and couldn't believe how much lower the EC motor's no-load current was. Bottom line: if your product runs for thousands of hours, spend the extra on the EC. If it's a temporary prototype, brushed is fine.

2. Why does 'Swiss made' matter in a maxon-motor?

'Swiss made' isn't just a sticker. It means the motor is designed and manufactured in Switzerland, which usually means tight tolerances and reproducible quality. For our small line of servo actuators, we need motors with the same torque constant from batch to batch. That's not always true with cheaper suppliers. I once ordered two identical motors from a non-Swiss vendor and they behaved differently on the test bench. The maxon-motor quote was higher, but the engineering team didn't have to adjust their controller design. In the end, the cost of debugging a mismatch was more than the price difference. That's a lesson I learned after eating a $2,400 charge for a failed development prototype. Actually, it was $2,400 for the full small batch—the motor itself was $180. Either way, not fun.

3. What should I look for in a servo motor manufacturer if my order is small?

Some suppliers treat small orders like second-class citizens. That leaves a bad taste. I don't accept that. A decent servo motor manufacturer should give you the same documentation, support, and quality whether you're buying 1 unit or 1,000. Here's what I check before ordering:

  • A real datasheet with torque-speed curves and electrical constants (not just marketing numbers).
  • Someone who answers the phone or email with technical details, not a sales script.
  • Willingness to explain lead times and customs paperwork for overseas orders.
  • Honesty about minimum order quantities. A vendor who hides a 100-piece MOQ until you're deep in the quote process is a red flag.

We had one supplier quote a great price for a servo motor, then quietly add a $250 'low quantity surcharge' to the invoice. That was the last time. Now I ask for total cost up front, including possible surcharges. Bottom line: small doesn't mean unimportant. Today's $200 prototype order can become next year's $20,000 production order—I've done that with three vendors already.

4. Is a squirrel cage induction motor a cheaper alternative?

For some applications, yes. Squirrel cage induction motors are the workhorses of industry—simple, rugged, and cheap to make. If you need a fixed-speed pump or fan, an induction motor is far cheaper than a maxon EC motor. But there's a catch: induction motors have low starting torque, speed varies with load, and they're inefficient at partial loads. To get precise speed control, you need a variable frequency drive (VFD), which adds cost and complexity. In our products—robots and small automation—we need accurate position control and fast response, so an induction motor doesn't make sense. As ABB's motor guide puts it, induction motors are used in roughly 85% of industrial applications, but that doesn't mean they're right for every job. A maxon-motor or another precision servo is often the better fit here.

5. How are ball bearings made, and why should I care?

Ball bearings are small steel balls that help shafts spin smoothly. How they're made matters because bearing quality directly affects motor noise, vibration, and life. According to SKF's maintenance handbook, a ball bearing starts as chrome steel wire (AISI 52100), which is cut, cold headed, then heat treated. The balls are ground and lapped down to tolerances measured in microns. It's intense. In a motor, a bad bearing shows up as growling noise or vibration—something our customers definitely notice. When our engineering team asks for a maxon-motor, part of the reason is careful bearing selection. The datasheet even includes bearing preload and radial play values, which is not something you get from a generic motor supplier. I can't say I've inspected a ball bearing under a microscope, but after 5 years, I know the difference between one that was made properly and one that wasn't. Usually the cheap one gets noisy by month six.

6. We're a small company—will maxon even talk to us?

Yes—and this is something I can speak to personally. A few years ago we needed a small batch of maxon EC motors for a customer prototype. I expected to be ignored because our order was worth maybe $1,200. Instead, the rep took the time to confirm the winding type and even flagged that one part number was end-of-life. That saved us from designing around a discontinued motor. I've had the opposite experience with another vendor: they wouldn't accept a 'small' order of 20 servo motors without a $400 setup fee. There's a difference between covering real costs and simply penalizing small buyers. Maxon has distributors that can handle low quantities, and their website lets you download datasheets and CAD files without logging in. That might sound basic, but it's rare to find that level of transparency from motor companies. In the last two years, we've ordered over $30,000 from maxon-motor, and it all started with a $1,200 first order.