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 |
| |
|
Machine
Screw Jacks
3 Ton Capacity |
|
| Model
Number |
WJ63
WJ123
WJ243 |
DWJ63
DWJ123
DWJ243 |
| .pdf
Drawing (Acrobat Reader Required) |
View .pdf
Drawing |
View .pdf
Drawing |
| Lifting
Screw Diameter (Inches) |
1 |
1 |
| Thread
Pitch/Lead |
.250 PITCH
ACME |
.250 PITCH
.500 LEAD ACME |
| Worm Gear
Ratio |
6:1
12:1
24:1 |
6:1
12:1
24:1 |
| Worm
Shaft Turns For 1" Travel |
24
48
96 |
12
24
48 |
| Maximum
H.P. @ Worm RPM |
1.87
1.25
.69 |
1.87
1.25
.69 |
| Operating
Torque* (Inch Lbs.) @ Worm RPM |
.029W*
.016W*
.009W*
@ 500 RPM |
.041W*
.022W*
.013W*
@ 500 RPM |
| Screw
Torque** (Inch Lbs.) |
.098W* |
.139W* |
| Efficiency
Rating % Approx. |
24.3
22.2
18.5 |
33.8
30.7
25.6 |
| Basic
Jack Weight (Lbs.) |
17 |
17 |
| Add to
Basic Jack Weight (Lbs.) For Each Additional 1" Of Travel |
.4 |
.4 |
Important:
Series DWJ may lower under load. External locking
systems are required.
*W = load in pounds.
* Operating torque: torque required for a given load increases
as speed decreases.
** Screw torque is the force required to keep the screw form
rotating. |
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