Quality Products
Our products are rigorously tested and cleaned, backed by a 2-year DO Supply warranty.
DO Supply is a global automation parts reseller focused on hard-to-find and obsolete industrial automation products. Based out of Raleigh, NC, we service customers worldwide, providing excellent customer and sales support, as well as offering our top-of-the-line warranty on all parts sold.
Our products are rigorously tested and cleaned, backed by a 2-year DO Supply warranty.
We offer various shipping options from UPS, FedEx Priority Overnight, DHL and similar. We also ship internationally via DHL, FedEx, and UPS.
While other automation experts have some expertise, we have nearly half a century, allowing us to help you find the ideal replacement or repair solution.
We are a leading global supplier of industrial automation replacement parts, dedicated to providing expert support, speed, and reliability. We offer a huge inventory of need-it-now surplus PLCs, drives, motors, HMIs, and more. Trusted worldwide, we supply parts from 1981 to today by manufacturers such as Allen Bradley, GE, Eaton Cutler Hammer, Mitsubishi, Johnson Controls, and more. With an extensive inventory of surplus products, we are sure you will find what you are looking for. Our commitment to quality and service is reflected in our A+ Better Business Bureau rating. We guarantee prompt delivery and responsive support, empowering businesses to streamline operations and enhance productivity through reliable automation solutions
We pride ourselves on being your need-it-now destination, specializing in immediate solutions for hard-to-find and obsolete replacements for PLCs, drives, motors, HMIs, and more.
Save money with our repair service backed by a 2-year DO Supply warranty, serviced by US-based technicians.
As industrial automation specialists, we focus on top brands like Allen Bradley, GE, Eaton Cutler Hammer, Mitsubishi, and Johnson Controls, sourcing hard-to-find and discontinued parts. Our dedicated team ensures quality through meticulous testing and repairs. With fast shipping and exceptional customer service, we offer a seamless experience. Plus, our in-house repair technicians provide repair services for most products.
Discover insightful industry knowledge
A bottle of water or a frozen dinner may look simple and unassuming on the outside. You pick it up, toss it into your cart, and go about your day. Yet, behind the scenes lie a choreographed dance of machinery and control systems that cook, pack, and label your next easy meal or bottled beverage. Food and beverage automation comes in many different flavors, from motors to run conveyor lines to robot arms that sort packages to make palletizing easier. Today, we will highlight one of the most important pieces of the system: the PLC, the glue that holds together an industry that relies on consistency, sanitation, uptime, and quality control. The Food and Beverage industry is one of the largest manufacturing sectors in America, accounting for 16.8% of all U.S manufacturing sales and 15.4% of U.S. manufacturing employment as of 2021, according to the USDA. That’s over 1.7 million workers ensuring that the quality of your next meal or drink is as you would expect it to be. On top of that...
Variable frequency drives and programmable controllers have evolved from loosely connected hardware communicating via hardwired I/O to tightly integrated systems that share tag-based data, diagnostic information, and motion commands over a single industrial Ethernet network. The main point of this architecture in Rockwell Automation environments is the ControlLogix platform, and its integration with the PowerFlex drive family defines how modern Allen-Bradley-based control systems handle motor control from simple pump speed regulation to coordinated multi-axis positioning. This article covers the full integration architecture across hardware, communication protocols, Auto-Device Replacement, CIP Motion, and diagnostic practices. Order PowerFlex 755 Drives Here The PowerFlex drive portfolio spans several product lines, each with distinct integration characteristics when paired with ControlLogix. The PowerFlex 525 (catalog 25B series) is a compact drive rated from 0.5 to 30 HP and...
DC drives and servo drives are two distinct types of motor control devices. DC drives are commonly used for steady-speed and torque control, while servo drives are designed for precise, responsive control of position, speed, and torque. If you want to really get what sets them apart, you have to dig into how they work, what motors they run, and the sorts of things they’re actually used for. A DC drive converts incoming AC power into DC, ensuring the motor receives the correct voltage and current. In many cases, the controller and drive are combined, so commands and motor output go hand in hand. Inside, it all comes down to how the drive handles AC. Many traditional DC drives use SCR-based rectifier circuits to convert incoming AC power into a controlled DC output for the motor armature. Smaller drives may use single-phase rectifier designs, while larger industrial DC drives often use three-phase, six-pulse SCR bridges for smoother and higher-power DC output. This is why you will see...