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Plant & Mill Supplies is the official
distributor for SDP/SI in Singapore, Malaysia, Thailand, China, Indonesia, Philippines & Vietnam.




Origin: USA



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Stock Drive Products and Sterling Instrument are major ISO 9001:2000 Certified operating divisions of Designatronics Incorporated, a company that began in 1960 as a manufacturer of small mechanical products. Today, Designatronics serves a worldwide customer base in excess of 15,000 accounts ranging from Fortune 100 companies to emerging hi-tech firms.


The company's three modern manufacturing plants, totaling 139,000 square feet, are located on technology-rich Long Island, New York. There, SDP-SI's experienced workforce designs, manufactures and distributes a diverse line of standard and custom, commercial and precision grade components, as well as a full range of electromechanical devices and assemblies.


Widely acknowledged as an industry leader, SDP/SI consistently sets standards for innovative designs and advanced manufacturing techniques.


SDP/SI offers


  • Timing Pulleys 

  • Belt Pulley

  • Flat Belt Pulley

  • Idler Pulley

  • Grooved Idler Pulleys

  • Step Cone Pulleys

  • Plastic Pulleys



  • Posi-Drive Pulleys

  • V Belt Pulley

  • Timing Pulleystock Cable Pulleys

  • simple machine idler

  • flat belt drive

  • mechanical precision pulley

  • synchronous belt drive.


SDP/SI offers


  • vibration mounts suspension

  • mounts vibration isolators

  • conical bumpers

  • damped spring mountings

  • machinery mounts

  • shock mount pad isolator

  • spring isolators



  • urethane mount

  • leaf spring mounts

  • ISO pad mountings

  • rectangular mounts

  • rubber isolators

  • cylindrical rubber mountings

  • Cup mount suspension mount.


SDP/SI offers


  • Spur Gear

  • Plastic Gears

  • Helical Worm Miter Gears

  • Bevel Gear

  • Precision Gear

  • Internal Gears

  • Pinion Gears

  • Rack Gears

  • Pinion Wire Gear



  • Blanks Metric Gears

  • Pinions planetary spiral bevel

  • miniature nylon machine

  • reduction spline

  • Gears stock

  • industrial ground

  • large small plastic differential custom brass

  • rear end adjustable cam

  • small worm gears.

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