Product Announcements:
Belts and Pulleys

SDP/SI offers a wide range of stock mechanical components online, including timing pulleys, timing belts, precision gears, bearings, couplings, shafting, and gearboxes. Standard inch and metric products ship quickly, supported by engineering expertise, CAD models, and selector tools. Read more...

SDP/SI offers a wide range of stock mechanical components online, including gears, pulleys, timing belts, bearings, couplings, shafting, motors, and gearboxes. Standard inch and metric products ship quickly, supported by engineering expertise, CAD models, and selector tools. Read more...

SDP/SI offers precision synchronous timing belts and drive components online, featuring extensive inventory, fast shipping, engineering support, CAD resources, and custom solutions for automation, robotics, aerospace, medical, and industrial applications. Read more...

Custom Machine & Tool Co., Inc. specializes in precision timing belt pulleys and keyless locking devices

What we do.

Custom Machine and Tool Co. Inc. is a leading US manufacturer of precision timing pulleys, drive systems and components for the motion control and power transmission markets.

Our story.

Bringing it to the next level and beyond!... Read more...

Custom Machine & Tool Co. Inc. has just launched an online interactive CAD catalog powered by 3Dfindit, giving you instant access to configurable 3D CAD models and datasheets for our Concentric Maxi Torque bushings and In-Stock timing pulleys.
What you can now do online:
• Select the right Concentric Maxi Torque bushing or pulley configuration
• Download CA... Read more...

Learn about the basics of belt drives, design and performance considerations for various systems and the benefits of CMT’s Concentric Maxi Torque bushing system.

Get your Guide here Read more...

Did you know?

Effective ways of handling paper has been a problem ever since the ancient Greeks started writing on papyrus eons ago. After all, Henry Brown's “receptacle for storing and preserving papers” (the filing cabinet) wasn't invented until 1886. Today, be it in the office, mail room, print shop or factory floor, speed and efficiency are paramount to your succes... Read more...

Would a 72-hour GUARANTEED shipping of your pulley stock order help you?

Timing Belt Pulley Stock IS OUR BUSINESS!

Timing Pulley Stock with a Promise! Custom Machine & Tool Co., Inc. has been the preferred choice for pulley stock by OEM’s nationwide for over 50 years. We GUARANTEE that aluminum or steel pulley stock order of up to 5 pieces will be sh... Read more...

From food processing to medical instrumentation, material choice matters.
Our pulley stock is available in food-grade stainless steel for washdown and hygienic environments, as well as aluminum, carbon steel, and engineered polymers to meet a wide range of performance and cost requirements.
Need something specific? We routinely manufacture pulley stock in custom materials, leng... Read more...

Say goodbye to shaft damage from set screws. Discover the difference our Concentric Maxi-Torque bushing brings to timing pulley applications. Reusable, repositionable, and engineered for reliable, shaft-friendly performance. Read more...