Worm gear screw jack with 0.5 ton~100 ton load capacity

Worm Gear Screw Jack

The Worm Gear Machine Screw Jacks are very popular with competitive prices. Offer positive mechanical action, precise positioning, and uniform lifting speeds. High strength bronze worm gear is used, the payloads from 0.5T to 100T . A total of 11 sizes are available, each in a traveling nut version and a basic version.

Load capacities from 0.5T to 100T.
Translating(traveling screw) and rotating (traveling nut) configurations
Electric Driven and Manual Operated both are available
Trapezoidal spindle (self-locking) and Ball Screw spindle (high efficiency) version
Design option: Standard, Anti-rotation, Anti-backlash or Safety nut
Standard and custom end fittings, mounting options, and drive shaft
Sijie can customize to your specifications

0.5T~15T load spec

0.5T~15T Worm Gear Drive Screw Jack‎

Model		SJW005	SJW010	SJW025	SJW050	SJW100	SJW150
Maximum Load (T)		0.5T	1T	2.5T	5T	10T	15T
Outer Diameter of screw (mm)		16	20	26	40	50	55
Root Diameter of screw (mm)		10.8	14.8	19.7	30.5	38.4	43.4
Screw Pitch (mm)		4	4	5	8	10	10
Gear Ratio	H	5	5	6	6	8	8
	L	20	20	24	24	24	24
Efficiency %	H	26	21	21	22	22	20
	L	15	12	12	14	15	14
Permissible max. Power ( KW )	H	0.39	0.49	1	2	2.8	3.1
	L	0.18	0.36	0.46	0.63	1.4	2.2
No-load Torque(N·m)		0.11	0.29	0.62	1.4	2	2.6
Permissible torque of input shaft (N·m)*		9.8	19.6	49	153.9	292	292
Required torque of input shaft at max. Load (N.m)	H	2.5	6.2	16.1	48.7	90.7	149
	L	1.1	2.9	7.4	20	45.3	72.3
Screw travel length (mm) per turn of worm shaft	H	0.8	0.8	0.83	1.33	1.25	1.25
	L	0.2	0.2	0.21	0.33	0.42	0.42
Permissible max. Input(rpm) when max. load	H	1500	750	600	400	300	200
	L	1500	1200	600	300	300	290
Screw torque when max. Load (N·m)		8.6	20.1	65.1	201.5	503.6	813.2

20T~100T load Spec

20T~100T Worm Gear Drive Screw Jack‎

Model			SJW200	SJW300	SJW500	SJW750	SJW1000
Maximum Load (T)			20T	30T	50T	75T	100T
Outer Diameter of screw (mm)			65	85	120	130	150
Root Diameter of screw (mm)			51.3	67	102	112	127
Screw Pitch (mm)			12	16	16	16	20
Gear Ratio	H		8	10.6	10.6	10.6	12
	L		24	32	32	32	36
Efficiency %	H		20	19	15	13	13
	L		13	11	10	8	8
Permissible max. Power ( KW )	H		5	8.4	13.4	14.4	21.4
	L		3.2	4.6	5.7	7.2	9.4
No-load Torque(N·m)			3.9	9.8	19.6	29.4	39.2
Permissible torque of input shaft (N·m)*			292	735	1372	1764	2450
Required torque of input shaft at max. Load (N.m)		H	238.1	400.1	856	1380.5	2040.9
		L	124	244	453.3	761.3	1278.3
Screw travel length (mm) per turn of worm shaft		H	1.5	1.5	1.5	1.5	1.67
		L	0.5	0.5	0.5	0.5	0.56
Permissible max. Input(rpm) when max. load		H	200	200	150	100	100
		L	250	180	120	90	70
Screw torque when max. Load (N·m)			1287.7	2531.9	5551.3	8921.8	13878.3

Order info

SJW Series Worm Screw Jack Ordering Guide Information

SJW – 010 – US – T – C – 1/6 – 300 – Y
1 2 3 4 5 6 7

1: Jack Model

SJ: “SIJIE” brand screw jack
W series machine screw jack

2. Load Capacity
010: Max. 1T lifting force

3: Screw Configuration & Mounting Orientation

US: Upright translating screw UK: Upright keyed screw UR: Upright rotating screw
IS: Inverted translating screw IK: Inverted keyed screw IR: Inverted rotating screw

Note: US, IS (Screw rotation, do axial motion) UK, IK (Screw anti-rotation, do axial motion)

UR,IR(Screw fixed rotation, traveling nut do axial motion)

SJW Screw Configuration & Mounting Orientation

4: Screw Top End

T: Top plate H: Clevis end S: Thread end R: Plain end SH: Spherical hinge U: Forked head

5: Worm Shaft Input Types

A: left side worm shaft input.
B: right side worm shaft input.
C: double worm shaft input.
M1: left side motor flange direct input.
M2: right side motor flange direct input.
M3: left side motor flange direct input, right side worm shaft input.
M4: right side motor flange direct input, left side worm shaft input.