Servomotors are an integral part of a servo system in motion control mechanisms. Choose from a DC servomotor or an AC servomotor, a brushless servomotor or a brush servomotor. DC Servomotors come in different types, such as permanent magnet, shunt wound, series wound, compound wound, disc armature and coreless. Types of AC servomotors include single-phase servomotors and 3-phase servomotors.

Vibration resistance of the servomotor, enclosure for the servomotor and dust or mist resistance of the servomotor are some add-on features that you must evaluate before buying a servometer.

Some important parameters you must consider before purchasing a servomotor are:

1. Type of servomotors: an AC servomotor or a DC servomotor
2. Required voltage and current
3. Operating conditions: torque, shaft speed and inertial force
4. Other details, such as gearbox and braking arrangement

Action Steps
The best contacts and resources to help you get it done

Buy servomotors from reputable servomotor manufacturers

Once you understand your requirements, evaluate different industrial servomotors available in the market.

I recommend: Baldor is a reputable manufacturer of servomotors, including AC brushless servomotors, DC servomotors and stainless steel servomotors. Galil Motion Control is a renowned manufacturer of precision motion control devices such as brush servomotors and brushless servomotors. Animatics, an automation solution provider, offers servomotors for various industries such as semiconductor, nuclear and automotive. Yaskawa Electric is another automation solution provider that supplies a broad range of servo systems, including brushless AC servomotors. If you are looking for a brushless AMP servomotor, evaluate products offered by Applied Motion Products.

Buy servomotors from a distributor or retailer

You can compare different servomotors based on their features and prices at distributors or retailers' websites.

I recommend: Steven Engineering, a distributor of electronic devices, offers motion control devices including servomotors. C&E Sales supplies servomotors from reputable manufacturers such as Siemens, Danaher and Applied Motion Products. You can also check out the list of servomotor manufacturers at DirectIndustry and ThomasNet.

Buy a specialty or customized servomotor

If standard industrial servomotors available in the market do not match your requirements, opt for a specialty or customized servomotor.

I recommend: ARC Systems is a reputable servomotor manufacturer that offers customized 2-phase AC servomotors. Parker Hannifin, another manufacturer of servomotors, provides customized servomotors as per customers’ requirements. In addition to a large array of its standard products, Siemens supplies customized servomotors for various equipment, including wire drawing machines, ceramic finishing machines and industrial press machines. Powertec manufactures a variety of motion control devices, including brushless servomotors for both normal and explosive environments.

Get your servomotor repaired from repair service providers

As servomotors are an important part of your servo system, you need to conduct a proper maintenance of your servomotors with the help of reputable service providers. Make sure you compare the cost of repairs against the cost of a new servomotor.

I recommend: A-1 Servomotor Repair provides repair services for servomotors, including DC and AC servomotors. Leppert-Nutmeg repairs servomotors from various manufacturers, including Yaskawa, Siemens and Mitsubishi. ICR can repair, refurbish or rebuild AC servomotors and DC servomotors.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Install appropriate brakes and clutches for your servomotor.
• •  Use brushless servomotors for explosive environments, as chances of spark initiation are less in brushless servomotors.