Ball Screws, Planetary Roller Screws and Inverted Roller Screws 

HIGH ACCELERATION, SMOOTHNESS AND MAXIMUM FLEXIBILITY

Moog has over 30 years experience in producing and designing customized high precision ball and planetary roller screws (ISO 3408 accuracy for classes 1-3-5-7) that are suitable for a variety of markets and challenging motion control applications.

Among the main features:

  • Various screw diameter-pitch combinations available (screw load capacity and dynamic performance)
  • Wide selection of screw end shafts (bearing housings, metric threads, socket heads, wrenches, bored heads, etc.)
  • Nut customization (shape, flange, coupling, number of circuits, special machining processes)
  • Various lubrication options (selection of the right lubricant for the application, positioning of the lubrication holes)
  • Selection of materials and special processing (standard and special materials, surface treatments appropriate for the type of application)
  • Extremely quiet operation for low disturbance and low noise applications
  • Compact design thanks to the Moog recirculating system design that allows a better balance of the nut
  • Robust design suited for heavy duty applications, vibrations and harsh environment

Benefits and features of Moog ball screws

  • ISO3408-3 classes 1-3-5-7
  • Diameter from 12 mm [0.47 in] to 100 mm [3.93 in]
  • Pitch from 1.5 mm [0.06 in] to 80 mm [3.14 in]
  • Length up to 6,200 mm [244 in]
  • Load capacity:
    • Dynamic load up to 1,450 kN
    • Static Load up to 3,300 kN
  • Acceleration 15 to 30m/sec2
  • Single or multi-start

Benefits and features of Moog planetary roller screws

  • ISO3408-3 classes 1-3
  • Diameter from 15 mm [0.6 in] to 100 mm [3.93 in]
  • Pitch from 2 mm [0.08 in] to 42 mm [1.65 in]
  • Length up to 4,000 mm [157.5 in]
  • Load capacity:
    • Dynamic load up to 1,230 kN
    • Static Load up to 3,500 kN
  • Acceleration up to 40m/sec2
  • Number of starts: 5-6

Benefits and features of Moog inverted roller screws

  • ISO3408-3 classes 3-5
  • Diameter up to up to 48 mm [1,89 in]
  • Pitch from 3 mm [0.12 in] to 20 mm [0,787 in]
  • Length up to 180 mm [7.08 in]
  • Load capacity:
    • Dynamic load up to 300 kN
    • Static Load up to 750 kN

Screws Overview

 

What is a ball screw?

A ball screw is a rolling system consisting of a threaded shaft (screw) and a nut that, internally threaded as well, contains a determined number of balls. 

The return of the balls that run in the nut during the rolling is permitted by one or more mechanical elements called liners.

A ball screw is similar to a ball bearing, with the balls travelling in one or more threads
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