• Precision Machining Services

    JK has a wide range of manufacturing capabilities. We provide our customers with engineering services, on time delivery and outstanding quality.

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  • Custom Pulleys, Sheaves and Flywheels

    Manufacturer of standard and made to order pulleys and Flywheels. Our diverse machines allow us to make a wide range of parts and quantities.

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  • Assemblies

    To help our customers control cost and quality we have the ability to provide complete assemblies.

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JK Pulley & Manufacturing

Providing the versatility of a full-service machine shop with a specialization in custom pulley manufacturing and high quality machining services including CNC milling, CNC turning, gear hobbing and CMM inspection…

Discover the difference

  • We put our manufacturing experience to work for customers by evaluating and improving potential designs to optimize manufacturing their parts.
  • It’s our goal to help you get the most value for your dollar with cost effective, efficient designs tailored around each of our services.
  • Our headquarters and main manufacturing facility have the capability to fulfill most any size order.
  • With 72,000 sq. ft. under one roof, we have an adaptable, responsive production system which can be configured to complete your orders.


Custom Pulleys / Flywheels

Standard and Made to order Pulleys

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CNC Milling

Comprehensive services for machining of various parts

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CNC Turning

Fast and precise for multiple industries

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Gear Cutting

Capable of effortlessly handling custom needs

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Robotic Machining

Automatic continuous production machine runs

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Design & Prototyping

Reverse engineering and precise prototyping

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Welding Services

Comprehensive welding for a wide variety of materials

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Quality and Cost saving Assemblies

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Case Study: Custom Pulleys

We have made pulleys with straight bores replacing tapered bushing which saved the cost of the bushing that they were buying... Read more

We have help design parts that combined V-belt drives with a positive gear belt pulley design to allow the customer to eliminate gear reducers saving... Read more

We have also helped customers combine two parts into one part reducing the need to order multiple parts and at the same time reduce their... Read more

JK Pulley

3805 Bates Street
St. Louis, MO 63116-3228
Phone: 314-481-2900
Fax: 314-481-9004


06/26/2024 - Timing pulleys are a fundamental component in mechanical systems that demand precision and reliability. Timing... More