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   SDP/SI Capabilities - Complete In-House Engineering Development, Customer Support and Special Services

Complete In-House Engineering Development, Customer Support and Special Services

Our engineering and manufacturing teams will partner with you throughout the entire process.

Facing a design challenge? Let SDP/SI engineers provide the custom solution to meet your specific requirements. Our engineers and manufacturing teams routinely partner with OEMs in aerospace, medical, defense, and robotic industries, providing the individualized customer support each project merits. With proven performance and unsurpassed experience our engineers are here to help!

For the best results involve SDP/SI engineers and manufacturing experts during the concept and early design stage of a project. Based on more than 70 years of experience and technical skills, our input can optimize performance, help lower costs, simplify assembly, make more compact in size, and design for manufacturability.

To ensure success of your project, consideration must be given to all phases of product development from prototype and validation to large volume manufacturing and assembly. SDP/SI applies quality tools at all stages so that the final product meets customer specifications and is manufacturable. For prototypes, life of the product support, next generation, individual components, and construction of intricate subassemblies we look forward to working with you.



Engineering Development and Reverse Engineering

Prototype to Production
Prototypes for Design Review

Integration of Parts or Subassembly into a Larger System

Various Materials, Finishes and Surface Treatments

Secondary Operations
Modified Standard Components

Custom Gears, Gearboxes, Gearheads, and Mechanical Components

Miniature FHT Belt Drive System
Custom Timing Belt and Pulley Drive Systems

Design Tools and 3D CAD Models



Special Services

Send Us Your Blanks for Tooth Cutting – 3/16” to 4” OD
Many companies rely on SDP/SI for their tooth cutting needs. With the world’s most advanced manufacturing equipment we provide fast turnaround while meeting your exact specifications. Cut and deburr Fine Pitch to Medium Pitch Gears, Pulleys, Worm Gears, Bevel Gears, and Helical Gears.

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Complete Manufacturing Capabilities and Equipment


We know that sometimes it takes a custom timing belt and pulley drive system to make everything run smoothly. SDP/SI can modify any of our existing stock timing pulleys and cut custom timing belt lengths for your unique application, creating a custom solution! SDP/SI offers fast-turnaround on precision-engineered components, secondary operations, off-the-shelf or custom components, materials, and specifications.

Many styles, sizes, and configurations are available.

Q: Do you need to open up a bore?
Q: Would you have better results with a lighter plastic pulley?
Q: Do you need a keyway?

A: Whatever your requirements are, we can create a custom pulley specifically for your needs. All of our quality custom-manufactured components are built to deliver the most consistent performance.


Timing Belt and Pulley pitches include:
MXL, XL, L, Miniature FHT®, HTD®, GT®2 and GT®3, T, and posi-drive

Not only can we manufacature custom pulleys and slice custom widths for timing belts, we invest in the world’s finest manufacturing equipment:
  • CNC Swiss Turning – Multiple Spindle, 9-Axis
  • CNC Lathe (Mill-Turn) – Multiple Spindle, 5-Axis
  • CNC Milling & Machining Centers – 4- & 5-Axis, with Automation
  • CNC Gear Cutting – CNC Bevel, CNC Hobbing, CNC Shaping, Coniflex Bevel Gear Generators, Rack Cutting
  • Deburring Department
  • Drilling Equipment
  • Grinding Equipment
  • Honing Machines
  • Plastic Injection Molds
  • Plastic Injection Machines
  • Timing Belt Slicing Machines
  • Timing Belt Ink Jet Printers
  • Ultrasonic Welders
  • Certified Inspection Equipment
  • SPC Capabilities
  • ISO 7 Class 10000 Clean Room - Assembly
  • 3D Printing for prototypes and low rate production
  • Keyway broaching
  • Custom Belt Pulleys
Our experienced, expert engineering staff can help you design the right component that's manufacturabile and cost-effective. They can alter your design for changing demands and improve efficiency.

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