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Stanley Bostitch
Pneumatic Tools, Fasteners |
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 |
| |
|
Machine
Screw Jacks
500 Pound Capacity |
|
| Model
Number |
WJ500 |
|
| .pdf
Drawing (Acrobat Reader Required) |
View .pdf
Drawing |
|
| Lifting
Screw Diameter (Inches) |
1/2 |
|
| Thread
Pitch/Lead |
.250 PITCH
STUB ACME |
|
| Worm Gear
Ratio |
5:1 |
|
| Worm
Shaft Turns For 1" Travel |
20 |
|
| Maximum
H.P. @ Worm RPM |
.25 |
|
| Operating
Torque* (Inch Lbs.) @ Worm RPM |
.024W* @ 500
RPM |
|
| Screw
Torque** (Inch Lbs.) |
.069 W* |
|
| Efficiency
Rating % Approx. |
33.3 |
|
| Basic
Jack Weight (Lbs.) |
1.3 |
|
| Add to
Basic Jack Weight (Lbs.) For Each Additional 1" Of Travel |
.08 |
|
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. |
|
|
|
