Pump Gears

When it comes to pump gears, Gear Motions is the industry expert. We possess the experience and state-of-the-art equipment necessary to produce high quality precision gears for all types and sizes of pumps.

Gear pumps are positive displacement pumps, meaning they pump a constant amount of fluid in each revolution. They can pump all sorts of fluids, including viscous, polymers, fuel and lube oils, resins and caustic fluids like PVC. Gears are the heart of a positive displacement pump, so ensure your gears are of the highest quality by partnering with Gear Motions.

We produce both the driver and driven gears for internal and external gear pumps. Our capabilities include spur or helical gears; both integral shaft and ground bore styles. Many pump gears have a ground tooth profile, offering minimal pulsation and improved life cycle compared to cut gears. Typical materials used are D2, 303, 316 and 440c Stainless steel, but other materials such as plastic, gray and ductile iron, bronze and steels are common as well.

In pump gears, a common issue can be “slip”, or the quantity of fluid leaking through internal clearances. Gear Motions specializes in minimizing slip by holding extremely tight tolerances when grinding the face width of the gears, and then measuring and matching the pump housings for minimal clearance.

Our extensive experience in designing and manufacturing pump gears includes working with a wide range of industries and types of equipment including:

  • Heavy Duty Gear Pump
  • High Pressure Gear Pumps
  • Industrial Gear Pumps
  • Military Applications
  • Gas and Oil Field Pump Equipment
  • Clean Room Vacuum Pumps
  • Water Pumps for Fire Trucks
  • Automatic Transmission Pump Gears
  • Oil Pump Gears
  • Fluid Metering Pump Gears

Gear Motions can handle every step of the gear manufacturing process; from design to delivery. We’ve built a reputation for quality and proven performance. Contact us to get started on your next project and see why our customers keep coming back to us again and again.

  • Diameter: 0.5” to 27.5”
  • Face: 12.9” Max
  • Pitch: 48 to 1.7 DP
  • Quality: AGMA Tolerance Q15

  • (2) Reishauer RZ400 with Robotic Loading
  • (3) Reishauer RZ300E
  • (1) Kapp Kx300p with Auto Load
  • (1) Höfler Helix 400K CNC
  • (1) Höfler Helix 700 CNC
  • (2) Gleason TAG 400 CNC
  • (1) Gleason 245 TWG CNC
  • (2) Richardon R200 CNC
  • (1) Liebherr LC380
  • (1) Kellenberger URS 175/1000 Universal, CNC 2-Axis, ID/OD Anglehead Grinder: 12.5″ dia. x 40″ long
  • (1) Toyoda GL4A, CNC 2-Axis, 30″ Anglehead Grinder: 12″ dia. x 40″ long
  • (1) Norton 6″ x 30″ CTU Cylindrical
  • (1) Cincinnati 6R-18L Cylindrical
  • (2) Myford High Precision O.D.
  • (1) SNI – CNC 2-Axis, Bore and Face
  • (1) Bryant Twin Spindle Bore and Face
  • (1) Heald 271 Slide-Bar, Twin-Spindle Bore and Face
  • (4) Heald ID Bore: Model 273A, 274
  • (1) Almco “Spindle Deburr”