Overview: SJ series worm gear screw lift is a miniature screw lift product professionally produced by our company. SJ worm gear screw lift is a basic lifting component with many advantages such as compact structure, small volume, light weight, wide power source, no noise, easy installation, flexible use, multiple functions, multiple supporting forms, high reliability, and long service life. It can be used individually or in combination, and can accurately control and adjust the height of lifting or propulsion according to a certain program. It can be directly driven by an electric motor or other power, or manually operated. It has different structural and assembly forms, and the lifting height can be customized according to user requirements. Therefore, it is widely used in industries such as machinery, metallurgy, construction, and water conservancy equipment, and has many functions such as lifting, lowering, pushing with auxiliary components, flipping, and adjusting various height positions

The SJ5 worm gear screw elevator developed by our company is a new type of miniature screw elevator. This screw elevator adopts advanced production technology and is cast with high-quality aluminum alloy material. It is more durable and beautiful than cast iron and steel materials. This SJ5 aluminum alloy screw lift is generally driven by a motor due to its small size and light weight.

1. Structural Type of SJ5 Aluminum Alloy Screw Lift

SJ5 elevators are divided into two types according to their structural types: screw elevators - screw elevators that simultaneously rotate and move axially; Screw lift - the screw rotates. The nut on the screw moves axially.

2. Assembly type of SJ5 aluminum alloy spiral screw elevator

Each structural type of screw lift is divided into two assembly types: Type A - the screw (or nut) moves upward; Type B - The screw (or nut) moves downwards.

3. SJ5 screw lift screw head type

The screw head of the screw lift structure is divided into four types: I (cylindrical type), II (flange type), III (threaded type), and IV (flat head type)

Various models and load modes at the shaft end, as well as the length of the screw and the allowable bending load, can refer to the following data or calculations

Bottom diameter of screw (d1)

SJ(D)2(20.5) SJ(D)3(25) SJ(D)5(31) SJ(D)10(37) SJ(D)15(43) SJ(D)20(54) SJ(D)30(62) SJ(D)40(67) SJ(D)50(74) SJ(D)100(82)

Schematic diagram of installation type of SJ worm gear screw lift and base

Schematic diagram of allowable bending load for SJ screw lift: