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Custom Pulleys / Flywheels

J.K. Pulley Company, Inc. is an ISO 9001:2015 certified manufacturer of custom pulleys. We cost effectively and efficiently manufacture standard as well as customized pulleys using the latest technologies in machining. We are committed to provide quality pulleys that strictly conform to customer specifications and design requirements.

  • We offer pulleys in numerous diameter sizes, ranging from 1 inch to 35 inches.
  • Our pulleys can be manufactured with many different types of belt grooves, including A,B,C,D,E,3V,5V,8V,J,K,L, and M groove types. We also offer pulleys with rope grooves, cable grooves, and Timing pulleys.
  • We specialize in manufacturing pulleys made from cast iron. We can also manufacture pulleys using a variety of other materials such as steel, bronze, plastic, aluminum, and brass.
  • We provide assistance during the design phase of customer orders, to help our customers obtain the most cost effective and efficient pulley or sheave design.
  • We use the latest inspection equipment that helps us to maintain quality throughout the production process.

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Custom Made Pulleys Capabilities

  • Cast Iron
  • Ductile Iron
  • Aluminum
  • Stainless Steel
  • Steel and Alloy Steel
  • Bronze
  • Brass
  • Titanium
  • Magnesium
  • Weldments
  • Plastic
  • 4-Axis Okuma MH500 Horizontal Mill
  • Okuma MH800 Horizontal Mill with Rotary Indexer
  • Okuma MCV60 Vertical Mill 30 x 60 x 27 inches Travel
  • Okuma MX45 Vertical Mill 15 x 30 x 17 inches Travel
  • 4-Axis Okuma LU45 Lathe 32 inches Diameter 36 inches Maximum Turning Length
  • 2-Axis Okuma LB35 Lathe 18 inches Diameter 36 inches Maximum Turning Length
  • Blanchard Grinder Maximum Diameter 36 inches
  • Okamoto Surface Grinder 12 x 24 inches Table
  • Vertical and Horizontal Sunnen Honing Machine
Pulley Groove Type
  • Belt Grooves:
    A, B, C, D, E, 3V, 5V, 8V, J, K, L, M
  • Cable Grooves
  • Rope Grooves
  • Timing
Pulley Diameter Sizes Ranging from 1/2 inch – 35 inches
Tolerances 0.0005 inches
  • Custom Made Pulleys
  • CNC Milling
  • CNC Turning
  • Gear Hobbing
  • High Production Robotic Machining
  • Reverse Engineering / Prototype Creation
  • Welding Services
  • Assemblies

More Information

Quality Certification ISO 9001:2015
Additional Features Design assistance
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