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SJM2.5 Machine Screw Jack
China Machine Screw Jack Manufacturers, 2-5 ton screwjacks
SJM2.5 Machine Screw Jack Quick Information:
1. Jack Model: SJM2.5
2. Screw Diam.: 30mm
3. Screw Pitch: 6mm
4. Max load capacity: 25KN
5. Speed Ratio: 1/6, 1/24
6. Max permissible power: 1.45KW
7. Screw Top End: Top Plate,Clevis End,Threaded End,Plain End, Forked Head and Spherical hinge.
8. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
9. Power Source: Electric Driven,Manual Operated or Both Are Available
10. Screw Type: Trapezoidal Screw
11. Individually or multiple screw jack lift system arrangements are available
12. Precisely positioning, self-locking trapezoidal screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
SJM2.5 Machine Screw Jack Applications:
SJM2.5 Machine Screw Jack Specifications:
| Jack Model | SJM2.5 |
| Max. Lifting Force ( KN ) | 25 |
| Max. Pulling Force( KN ) | 25 |
| Lift Screw Size( mm ) | Tr30×6 |
| Gear Ratio ( H ) | 1/6 |
| Travel length(mm) per full turn of worm Shaft ( H ) | 1.0 |
| Efficiency % ( H ) | 23 |
| Gear Ratio ( L ) | 1/24 |
| Travel length(mm) per full turn of worm Shaft ( L ) | 0.25 |
| Efficiency % ( L ) | 14 |
| Max. Length of lifting screw (mm), when tensile force | 1500 |
| Max. Permissible power ( KW ) | 1.45 |
| Lubricant ( kg ) | 0.1 |
| Weight without stroke ( kg ) | 7.3 |
| Weight of screw ( kg ), per 100mm stroke | 0.45 |
|
Remarks: 1: H: high ratio, L: low ratio. 2: Max. Permissible power is under the conditions that ambient temperature 20 degree c , duty cycle 20%h and input speed 1500rpm. 3: Efficiency is under grease lubrication. 4: Working temperature is -20℃-+80℃. |
|
| SJM2.5 Machine Screw Jack ( Tr30×6) | ||||||||||
| Speed (rpm) | Lifting Speed (mm/min) | F=25KN | F=20KN | F=15KN | F=10KN | |||||
| H | L | H | L | H | L | H | L | |||
| 18 N.m | 7.1 N.m | 14 N.m | 5.7 N.m | 11 N.m | 4.3 N.m | 6.9N.m | 2.9N.m | |||
| H:1/6 | L:1/24 | (KW) | (KW) | (KW) | (KW) | (KW) | (KW) | (KW) | (KW) | |
| 1500 | 1500 | 375 | 2.7 | 1.2 | 2.2 | 0.89 | 1.7 | 0.67 | 1.1 | 0.45 |
| 1000 | 1000 | 250 | 1.8 | 0.74 | 1.5 | 0.60 | 1.1 | 0.45 | 0.72 | 0.30 |
| 750 | 750 | 187.5 | 1.4 | 0.56 | 1.1 | 0.45 | 0.82 | 0.33 | 0.54 | 0.22 |
| 500 | 500 | 125 | 0.91 | 0.37 | 0.72 | 0.30 | 0.54 | 0.22 | 0.36 | 0.15 |
| 300 | 300 | 75 | 0.54 | 0.22 | 0.43 | 0.18 | 0.33 | 0.13 | 0.22 | 0.09 |
| 200 | 200 | 50 | 0.36 | 0.15 | 0.29 | 0.12 | 0.22 | 0.09 | 0.14 | 0.06 |
| 100 | 100 | 25 | 0.18 | 0.07 | 0.14 | 0.06 | 0.11 | 0.05 | 0.07 | 0.05 |
| 50 | 50 | 12.5 | 0.09 | 0.05 | 0.07 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Speed (rpm) | Lifting Speed (mm/min) | F=5KN | F=2.5KN | F=1KN | ||||||
| H | L | H | L | H | L | |||||
| 3.5 N.m | 1.4 N.m | 1.7 N.m | 0.71 N.m | 11 N.m | 4.3 N.m | |||||
| H:1/6 | L:1/24 | (KW) | (KW) | (KW) | (KW) | (KW) | (KW) | |||
| 1500 | 1500 | 375 | 0.54 | 0.22 | 0.27 | 0.11 | 0..11 | 0.05 | ||
| 1000 | 1000 | 250 | 0.36 | 0.15 | 0.18 | 0.07 | 0.07 | 0.05 | ||
| 750 | 750 | 187.5 | 0.27 | 0.11 | 0.14 | 0.06 | 0.05 | 0.05 | ||
| 500 | 500 | 125 | 0.18 | 0.07 | 0.09 | 0.05 | 0.05 | 0.05 | ||
| 300 | 300 | 75 | 0.11 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | ||
| 200 | 200 | 50 | 0.07 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | ||
| 100 | 100 | 25 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | ||
| 50 | 50 | 12.5 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | ||
Design, produce and testing:
SJM-2.5 Machine Screw Jack Ordering Information:
1: Jack Model SJM2.5:
Max. Load capacity is 25KN
2: 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)
US IS UK IK UR IR
3: Screw Top End
T: Top plate H: Clevis end S: Thread end R: Plain end SH: Spherical hinge U: Forked head
4: 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.
5: Gear Ratio:
SJM2.5 machine screw jack gear ratio includes 1/6, 1/24
1/6: Fast speed, 1mm travel length per full turn of worm shaft.
1/24: Low speed, 0.25 travel length per full turn of worm shaft
6: Travel Stroke
7: Accessories
N: Standard Jack, No additional accessories
P: Protective Tube
R: Dust Cover
Y: Hand Wheel
Other accessories,please check below picture
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