SWL Series Screw Jack – The Industry Standard (JB/T 8809-1998)

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SWL Series Screw Jack – The Industry Standard

The SWL series (蜗轮丝杆升降机) is a national standard screw jack compliant with JB/T 8809-1998. It is one of the most widely used screw jack series in the industry

Key Specifications

Parameter	Value
Load Capacity	0.5T – 120T
Max Input Speed	1500 r/min
Max Lifting Speed	2.7 m/min
Operating Temperature	-20°C to +100°C
Self-locking	Yes

The SWL screw jack reducer series includes the following models:

SWL0.5, SWL1, SWL2.5, SWL5, SWL10, SWL15, SWL20, SWL25, SWL30, SWL35, SWL50, SWL70, SWL100, SWL120

Model number indicates load capacity in tons (e.g., SWL10 = 10T capacity).

Structure & Assembly Options

SWL series supports:

Structure Types: Type 1 (screw moves) / Type 2 (nut moves)

Assembly Types: Type A (upward) / Type B (downward)

Head Types: I (cylindrical), II (flanged), III (threaded), IV (flat)

Ratios: Normal (P) / Slow (M

Protection Options

●Basic – standard configuration

●Anti-rotation (F) – prevents screw rotation

●With protective boot (Z) – dust protection

Application scenarios of screw lifting platform reducer:

SWL series is widely used in mechanical, metallurgical, construction, water conservancy, chemical, medical, and cultural industries