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  • August 06, 2026

Screw Jack Type 1 Structure – Screw Moves Axially (Translating Screw)

Screw Jack Type 1 – Screw Moves Axially

In Type 1 screw jack structure, the worm gear is threadedly connected to the screw. When the worm gear rotates, the screw rotates and moves axially simultaneously – the nut remains fixed in the housing.

How It Works

  • The worm drives the worm gear

  • The worm gear's internal threads engage with the screw

  • The screw rotates and extends/retracts linearly

  • The load is connected to the moving screw end

Key Characteristics

●Simple structure – easy to install and maintain

●Screw moves – the screw itself travels up and down

●Nut is fixed – secured within the gearbox housing


Screw Head Types for Type 1

Type 1 structure supports four screw head types

TypeDescription
Type I (Cylindrical)Plain cylindrical end
Type II (Flanged)Flange for bolted connections
Type III (Threaded)Threaded end for nut attachment
Type IV (Flat head)Flat end for custom connections

Protection Options for Type 1

Type 1 supports three protection configurations:

Basic – standard configuration

Anti-rotation (F) – prevents screw rotation

With protective boot (Z) – protects against dust and debris

Anti-rotation + protective boot (FZ) – combined protection

Typical Applications

Type 1 is commonly used when the load needs to move with the screw – ideal for lifting platforms, scissor lifts, and height adjustment systems.




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