Anti-backlash Screw Jacks

Backlash occurs when the motor driving an actuator reverses its load direction. When the actuator is under load, the lifting screws threads are supported by the worm gears threads. The anti-backlash nut, pinned by the worm gear and adjusted downwards by the shell cap, forces the bottom thread surfaces against the upper thread surfaces of the lifting screw. Thus, backlash between the lifting screw and worm gear threads is reduced to a minimum.

• Capacity
  1/4 to 250 Ton models.
• Precise Positioning
  Anti-backlash nuts help ensure more precise positioning and repeatability in linear motion systems
• Dual Purpose
  Also acts as an internal safety nut.
• Ratios
  Available with standard, optional, & numeric ratios.
• Material Option
  Available in stainless steel for most capacities.
• Maximum Control
  The ability to lock and hold a load, thereby eliminating the need for brake motors required for some applications.