Page 5 - Joyce - Metric Screw Jacks

mETRiC SCREw JACKS SpECiFiCATiONS

Screw Thread Worm Worm Shaft Tare Torque Starting Operating Efficiency Screw Basic Jack Jack Weight
Model Capacity Diameter Pitch/Lead Gear Ratio Turns for (Nm) Torque (Nm) Torque (Nm) Rating % Torque Weight (Kg) per
(mm) 1mm Travel Approx. (Nm) (Kg) 25mm Travel
.70w*
mwJ51 5:1 1 .95w* @ 500 Rpm 22.7
10kN 20 5mm 0.33 2w* 2.7 0.14
mwJ201 20:1 4 .41w* .23w* 17.0
@ 500 Rpm
.81w*
mwJ62.5 6:1 1 1.01w* 19.6
@ 500 Rpm
.45w*
mwJ122.5 25kN 30 6mm 12:1 2 0.67 .62w* 17.8 3w* 6.8 0.18
@ 500 Rpm
.27w*
mwJ242.5 24:1 4 .44w* 14.7
@ 500 Rpm
1.14w*
mwJ65 6:1 0.67 1.64w* @ 300 Rpm 20.9
.64w*
mwJ125 50kN 40 9mm 12:1 1.33 1.13 1.03w* 18.7 4w* 14.5 0.32
@ 300 Rpm
mwJ245 24:1 2.67 .74w* .39w* 15.2
@ 300 Rpm
1.18w*
mwJ810 8:1 0.67 1.53w* @ 200 Rpm 20.2
100kN 55 12mm 2.26 5w* 19.5 0.59
mwJ2410 24:1 2 .76w* .49w* 16.1
@ 200 Rpm
*W: Load in kN.
Tare Torque: initial torque to overcome seal and normal assembly drag. This value must be added to starting torque or operating torque values.
Starting Torque: Torque value required to start moving a given load (dissipates to operating torque values once the load begins moving).
Operating Torque: Torque required to continuously raise a given load at the input Rpm listed.
Note: if your actual input Rpm is 20% higher or lower than the listed Rpm, please refer to our JAX program to determine actual torque values at your Rpm.
®
Screw Torque: Torque required to resist screw rotation (Translating Design Jacks) and traveling nut rotation (Keyed for Traveling Nut Design Jacks).
Lead: The distance traveled axially in one rotation of the lifting screw.
Pitch: The distance from a point on a screw thread to a corresponding point on the next thread measured axially.

2D and 3D models available on website • Ordering information on pages 72 and 73 75
800-523-5204 sales@joycedayton.com joycedayton.com