Heavy-Duty Sja200 Screw Jacks for Steady Lifting Solutions

• Hardness: Soft Tooth Surface
• Installation: 90 Degree
• Layout: Worm-Gear
• Model NO.: SJA
• Gear Shape: Cylindrical Gear
• Step: Single-Step
• Type: Worm Reducer
• Gear Ratio: 8-60
• Customized or Not: Be
• Self-Locking or Not: Be
• Power (Output): 3kw
• Transport Package: Crate
• Specification: 200
• Trademark: Kingmai
• Origin: Shandong, China
• Production Capacity: 50, 000 Units

Product Description

The worm gear screw jack is a basic lifting component with the advantages of compact structure, small volume, easy installation, high reliability, and long service life. Single jack or multiple jacks system arrangements are available. Available in ten sizes, these screw jacks' load capacity is from 1 ton to 100 ton as standard, customized 150 tons,200 tons,250 tons.

Alloy steel input shafts
ZQAl9-4 tin bronze worm gears
Tapered roller bearings or ball thrust bearings offer rugged reliability
Double input shafts standard
Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation
Electric driven and manual operated both are available
Protective tube and bellows are available
Anti-backlash devices, safety nut, and Anti-rotation are available
Customized machine screw jacks can be made to your specifications

Product Parameters

Specifications
Model	SJW-010	SJW-025	SJW-050	SJW-100	SJW-150	SJW-200	SJW-300	SJW-500	SJW-750	SJW-1000
Max. Lifting Load ( KN )	9.8	24.5	49.0	98.0	147	196	294	490	735	980
Outer Diameter Of Screw ( mm )	20	26	40	50	55	65	85	120	130	150
Root Diameter Of Screw ( mm )	14.8	19.7	30.5	38.4	43.4	51.3	67	102	112	127
Thread Pitch ( mm )	4	5	8	10	10	12	16	16	16	20
Gear Ratio ( H )	1/5	1/6	1/6	1/8	1/8	1/8	3/32	3/32	3/32	1/12
Efficiency % ( H )	21	21	22	22	20	20	19	15	13	13
Screw Travel(mm) Per Turn Of Worm Shaft( H )	0.80	0.83	1.33	1.25	1.25	1.50	1.50	1.50	1.50	1.67
Gear Ratio ( L )	1/20	1/24	1/24	1/24	1/24	1/24	1/32	1/32	1/32	1/36
Screw Travel(mm) Per Turn Of Worm Shaft( L )	0.20	0.21	0.33	0.42	0.42	0.50	0.50	0.50	0.5	0.56
Efficiency % ( L )	12	12	14	15	14	13	11	10	9	8
No-Load Torque ( N.m )	0.29	0.62	1.4	2.0	2.6	3.9	9.8	19.6	29.4	39.2
Max. Permissible Input Power ( KW ) ( H )	0.49	1.0	2.0	2.8	3.1	5.0	8.4	13.4	14.4	21.4
Max. Permissible Input Power ( KW ) ( L )	0.36	0.46	0.63	1.4	2.2	3.2	4.6	5.7	7.2	9.4
Permissible Input Torque ( N.m )	19.6	49.0	153.9	292.0	292.0	292.0	735.0	1372.0	1764.0	2450
Max. Load, Required Input Torque ( N.m ) ( H )	6.2	16.1	48.7	90.7	149.0	238.1	400.1	856.0	1380.5	2040.9
Max. Load, Required Input Torque ( N.m ) ( L )	2.9	7.4	20.0	45.3	72.3	124.0	244.0	453.3	761.3	1278.3
Max. Load, Permissible Input Speed( rpm) ( H )	750	600	400	300	200	200	200	150	100	100
Max. Load, Permissible Input Speed( rpm) ( L )	1200	600	300	300	290	250	180	120	90	70
Max. Load, Lifting Screw Output Torque( N.m )	20.1	65.1	201.5	503.6	813.2	1287.7	2531.9	5551.3	8921.8	13878.3
Remarks: 1: Efficiency is under grease lubrication  2: H: High speed gear ratio  L: Low Speed Gear Ratio

on of the worm, thus realizing the effect of deceleration.

1. Installation Steps for Worm Gear Reducers
2. . Select the installation location: make sure that the installation location is dry, clean, and well ventilated, and take into account the convenience of maintenance and safety factors.
3. . Mounting foundation: place the reducer on the mounting foundation, check for leveling using a level, and make necessary adjustments.
4. . Axis alignment: Make sure that the input shaft of the reducer and the output shaft of the drive equipment maintain coaxiality to avoid wear and tear caused by axis misalignment.
5. . Connecting the motor: connect the gearhead to the motor and make sure the connection is tight and firm.
6. . Adjustment of position: adjust the position of the reducer to make it harmonize with other equipment.
7. . Test run: after the installation is completed, carry out a test run to check whether the reducer is running normally, whether there is abnormal noise and excessive high temperature.

Q: Can you make the gearbox with customization?
A: Yes, we can customize per your request, like flange, shaft, configuration, material, etc
Q: Do you provide samples?
A: Yes.A sample is available for testing.
Q: What's your lead time?
A: Standard products need 5-30 days, a bit longer for customized products.
Q: Do you provide technology support?
A: Yes. Our company has a design and development team, we can provide technology support if youneed.
Q: How to ship to us?
A: lt is available by air. by sea. or by train.
Q: How to pay the money?
A: T/T and L/C are preferred, with a different currency, including USD, EUR. RMB. etc
Q: How can l know if the product is suitable for me?
A: > 1st confirm drawing and specification >2nd test sample >3rd start mass production
Q: Can l come to your company to visit?
A: Yes, you are welcome to visit us at any time.
A: You can send an inguiry directly, and we will respond within 12 hours