Hand crank table lift mechanism screw jack with flange

Product Overview

Description

Hand crank table lift mechanism screw jack with flange

 

1.Screw jack capacities from 1/4 ton to 350 tons

2.Available in machine screw, ball screw, stainless steel machine screw actuators, micro-miniature actuators, high duty cycle actuators, motorized machine screw and ball screw actuators, electric cylinders and motor control systems  

3.Accessories include miter gear boxes, motor adapters, transducers, couplings, ball screws and ball screw systems, and locking rings

4.Can be used as alternatives to hydraulic and pneumatic systems

 

 Performance Table

 

Model		SWL2.5	SWL5	SWL10		SWL15		SWL20	SWL25		SWL30
Max lifting(KN)		25	50	100		150		200	250		300
Screw diameter× pitch(mm)		Tr30×6	Tr40×7	Tr58×12				Tr65×12	Tr90×16		Tr100×20
Max pulling(KN)		25	50	99				166	250		350
Worm ratio	P	1/6	1/8	3/23				1/8	3/32		3/32
	M	1/24	1/24	1/24				1/24	1/32		1/32
Stroke per input turn	P	1.0	0.875	1.565				1.56	1.5		1.875
	M	0.250	0.292	0.5				0.5	0.5		0.625
permissible length when standing max pulling		1500	2000	2500				3000	3500		4000
permissible length when stand max lifting	No lead on top of shaft	250	385	500		400		490	850		820
	Lead  on top of shaft	400	770	1000		800		980	1700		1640
Worm torque in max load(N.M)	P	18	39.5	119		179		240	366		464
	M	8.86	19.8	60		90		122	217		253
Efficiency (%)	P	22	23	20.5				19.5	16		18
	M	11	11.5	13				12.8	9		11
Power (W)		P=T×n/9550    T: moment torque(N.M), n: speed of worm shaft(r/min)
Weight not include shaft		7.3			16.2		25			36		70.5	87
The weight per 100mm shaft(kg)		0.45			0.82		1.67			2.15		4.15	5.20
lubricant		Synthesis of calcium sodium ZGN-1 or ZGN-2 (-20℃-100℃)
Weight of lubricant(kg)		0.1			0.3		0.5			0.75		1.1	1.9

 

 

 

Production details

Lifting table is an common appliance of Hand Operated/Crank Screw Jack .
From the above picture you can see where the screw jack mechanism is used. The screw jack mechanism is usually two-set screw jack system,including two jacks, shaft,couplings and pillow blocks sometimes when the shaft is very long. We offer 1ton,  2.5ton  and 5ton screw jack mechanism.

 

 

Q: How to choose suitable screw jack mechanism for the table? 

There are three questions to help you choose suitable model.

1. what is the total load for the screw jack mechanism?

2.what is the central distance between two jacks?

3.what is the screw length?

 

 

Screw Top:

 

 

 

Application of Hand Operated Screw Jacks