Product Announcements:
Timing Pulleys (inch)

Wide range of pulleys including timing, V-belt, taper-bushed, flat belt, sheaves, and MC nylon types. Offering high precision, durability, and reliable performance. Custom manufacturing available. Compatible with various power transmission systems for industrial, agricultural, mining, conveyor, and machinery applications. 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...

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...

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...

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...

Long lead times are still one of the biggest production bottlenecks we see.

Pulley stock is a simple way to stay moving by machining timing pulleys in-house without waiting on custom runs.
Aluminum, steel, stainless (including food-grade), and more available upon request.

Curious how others are handling lead time pressure right now? Read more...

The Concentric Maxi Torque is a unique bushing connection system. A single screw locks the low taper angle split bushing in place and eliminates all of the existing attachment issues.

1. Improved hub-to-shaft concentricity.

Radial run out less than .001/.026 mm as assembled enables customers to attain higher drive speeds, reduce unwanted vibration, and maintain concentricit... Read more...

Custom Machine & Tool Co., Inc. has been the preferred manufacturer of timing pulley stock with fast delivery for OEM's and distributors for over 50 years.

Simply click on the Product Number within the catalog below to request your quote!
We'll guarantee shipment of up to 5 pieces of the sizes not excluded in catalog below within 72 hours (3 business days) o... Read more...

 A single screw locks the low taper angle split bushing in place and eliminates all of the existing attachment issues. Read more...

SDP/SI manufactures metal and nonmetallic pulleys in a variety of profiles, sizes, styles and numbers of teeth. To ensure long life and quiet operation in your application our pulleys are made to the exact timing belt profile. To complete your drive system, get your timing belts from SDP/SI. Read more...