|
Aero-Motive
Reels, Balancers |
|
Coffing Hoists
Hoists, Hoist
Repair |
|
CM Hoists
Chain
Hoists, Wire Rope, Ratchet Levers, Trolley
|
|
Conductix
Power and Data Transfer Systems |
Demag
Overhead Cranes
Hoists and Winches Gearmotors
Ergonomic Systems |
|
Duff-Norton Mechanical
Actuators, Rotary Unions, Electromechanical Actuators |
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Storage Systems |
|
Hilman Rollers
Riggers Sets |
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Chain & Wire Hoists |
|
Joyce/Dayton
Jacks, Actuators |
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Lyon
Tool Storage, Locker Units
|
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Perfecting Coupling |
|
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Hydraulic Tools
|
Stanley Bostitch
Pneumatic Tools, Fasteners
|
Simplex
Jacks and Braces |
|
In-Plant Offices, Mezzanines
|
 |
| |
|
Machine
Screw Jacks
250 Ton Capacity |
|
| Model
Number |
WJ50250 |
|
| .pdf
Drawing (Acrobat Reader Required) |
View .pdf
Drawing |
|
| Lifting
Screw Diameter (Inches) |
9 |
|
| Thread
Pitch/Lead |
1.000 PITCH
ACME |
|
| Worm Gear
Ratio |
50:1 |
|
| Worm
Shaft Turns For 1" Travel |
50 |
|
| Maximum
H.P. @ Worm RPM |
29.01 |
|
| Operating
Torque* (Inch Lbs.) @ Worm RPM |
.036W*
@ 60 RPM |
|
| Screw
Torque** (Inch Lbs.) |
.711W* |
|
| Efficiency
Rating % Approx. |
8.8 |
|
| Basic
Jack Weight (Lbs.) |
3415 |
|
| Add to
Basic Jack Weight (Lbs.) For Each Additional 1" Of Travel |
21 |
|
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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