Beyond Reliable Motor Actuators & Drives

Controlling Motion with Precision

NN Inc. manufactures the components needed to enable the precision movement for many devices. Pinions, Worm gears, motor shafts, and shaft assemblies that are part of devices such as seat adjustors, Sunroof motors, window lifters, wiper drives, power tools, transfer cases, E-Bike motors, appliance motors, and many other devices. NN Inc precision gear manufacturing of obtaining class 7 gear quality standards. Our precision OD grinding is capable of production tolerances of +/- 0.001mm (0.00004”). Our engineering staff can work with our customers to create the be value solution for their precision components requirements.

Motor Actuators & Drives What We Build

NN Inc valued engineered precision components for motors, actuators, and drives includes Pinions, Worm Gears, motor shafts, and shaft assemblies. We will work with your team to create a manufacturing process to reach the best balance between cost and precision tolerancing.

Window Lift & Seat Belt Pinions

Turbo Actuator Pinion Shafts

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Actuator Pins


Straight and helical Pinion gears produced to a gear quality classification of 7/8. NN Inc. manufacturing capabilities in precision turning, hard hobbing, skiving, and grinding to OD tolerances of +/-0.001mm (0.00004”)

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Window Lift Worm Gears

Transfer Case Worm Shafts

Seat Adjustor Spindle

Window Lift Worm Gears

Transfer Case Worm Shafts

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Drive Worm Gears


Worm gears or endless screws are manufactured to a gear quality classification of 7/8. NN Inc. manufacturing capabilities includes precision turning, gear cutting and rolling , and secondary finishing process.

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Starter Motor Shaft

Motor Shafts

Disposal Motor Shaft

HVAC Shafts

Rocker Arm Shafts

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Motor Shafts


NN Inc. process capabilities includes precision centerless or between centers grinding, induction and standard heat treating, spline, hobbing and rolled gears. Grinding tolerance range +/- 0.004mm (0.00016”).

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HVAC Shaft Assembly

Worm Drive Assembly

Transmission Fork & Shaft

Transmission Shift Assembly

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Shaft Assemblies


NN Inc. process capabilities includes precision machining and grinding, induction and standard heat treating, Thread cutting and rolling gears.

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How We Build

NN Inc. has extensive engineering experience with precision machining, grinding, gear manufacturing that is well suited to the manufacture of pinion and worm gears, motors shafts, and shaft assemblies.

Precision Machining Capabilities


  • CNC Sliding Stock
  • CNC Fixed Stock
  • Cam Automatic Multi-Spindle
  • CNC Multi-Spindle
  • Rotary Transfer Machining
  • OD Toler. +/- 0.010 mm
  • ID Toler. +/- 0.010 mm
  • Concentricity: 0.020mm
  • Angular Position 0.050mm
  • OD Size Range 8 – 50mm
  • Length Range: 60 – 170mm

Precision Grinding Capabilities


  • Thru-Feed OD
  • In Feed OD
  • Between Center OD
  • Centerless
  • ID Grinding
  • OD Toler. +/- 0.001 mm
  • Roundness 0.001 mm
  • Surface Finish: Rz 1.0
  • OD Size Range 8 – 50mm
  • Length Range: 60 – 170mm

Precision Gear Capabilities


Gear Quality Class 7/8

  • Hobbing
  • Skiving
  • Shaping
  • Thread Milling
  • Rolling
  • Broaching

Secondary Operation Capabilities


  • Hard Turning
  • CNC Chucker
  • CNC Milling
  • ID Honing
  • Diamond Bore Sizing
  • System Assembly
  • Ultrasonic Cleaning
    • Particle Counting
    • Gravimetric Analysis
  • Heat treating
  • Induction Heat Treating

Quality Capabilities


  • Metrology Equipment
    • Optical Scanners
    • Precision Runout
    • Surface Finish Profilometer
    • Custom Hard Gaging
  • Gear Measurement
  • Quality Certifications
    • IATF-16949:2016
    • ISO 9001:2015
    • ISO 14001:2015

Contact Us and See What We Can Create Together

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