Spur Gears

External Spur Gear

Spur gears are used in mechanical applications to increase or decrease the speed of a device or multiply torque by transmitting motion and power from one shaft to another through a series of mated gears. Spur gears are one of the most popular types of precision cylindrical gears. These gears feature a simple design of straight, parallel teeth positioned around the circumference of a cylinder body with a central bore that fits over a shaft. In many variants, the gear is machined with a hub that thickens the gear body around the bore without changing the gear face. The central bore can also be broached to allow the spur gear to fit onto a spline or keyed shaft.

As one of the leading spur gear manufacturers, suppliers, and exporters of mechanical products, We offer spur gear and many other products. Please get in touch with us for details.

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Manufacturer supplier exporter of spur gear.

External Spur Gears

SSJ Group has met our customers’ requirements for external gears and splines in numerous configurations, a wide range of sizes, and various materials for over 20 years. Our experienced technicians will work with you to meet your requirements for a standard, modified, or custom gear tooth profile in single quantities or thousands of parts. External spur gears are used to transmit power and motion between parallel shafts and are, by far, the most common type of gear used in the largest number of applications. They have teeth that are both straight and parallel to the axis of rotation and are usually produced from cylindrical gear blanks. The involute profile of spur gear teeth allows for smooth operation between mating gears and permits greater variations in mounting distances without affecting proper gear action.
External splines typically have teeth cut on the outside diameter of a drive shaft parallel to the axis of shaft rotation. The teeth of splines may be of various forms including involute, crowned, parallel, or serrated. Shafts with external splines typically mate with components having internal splines to transmit torque and motion on the same axis.

External Spur Gears Experience

SSJ Group produces countless configurations of external spur gears and splines in numerous shapes and sizes using a variety of materials and manufacturing processes that include CNC turning, CNC milling, CNC gear hobbing, gear shaping, broaching, and finish grinding. We provide gears with hubs, keyways, slots, internal splines, cross holes, threaded holes, and just about any other machined feature required. We’ll ensure that your requirements for heat treating, plating, marking, and testing are met. We can also cut gear teeth on blanks that you supply or supply machined gear blanks to you for further processing.

We have manufactured internal spur gears and splines for customers from a number of industries, including:

  • Aerospace
  • Appliance
  • Automotive
  • Consumer Product
  • Defense
  • Food Processing
  • Hand & Power Tools
  • Industrial Equipment
  • Machine Controls
  • Medical Device & Equipment
  • Motion Control
  • Oil & Gas

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Spur Gear Video