Joyce BG450D - Manual (Page 8)

8
3-3 BG 450 Bevel Gear Jack Part Numbers
Model Number BG 450 S BG 450 D
Static Capacity
Upright screw in Compression
218,000 # 218,000#
Static Capacity
Inverted screw in Tension 218,000# 218,000#
Static Capacity
Upright screw in Tension 200,000# 200,000#
Static Capacity
Inverted screw in Compression
200,000# 200,000#
Dynamic Load Capacity
Use JAX*
Software
Use JAX*
Software
Screw Diameter 4 ½” 4 ½”
Pitch/Lead .5 Pitch
.5 Lead Acme
.5 Pitch
1.0 Lead Acme
Bevel Gear Ratio 3:1 3:1
Pinion turns for
1” of travel
6 3
Pinion Torque (in. #) .125 W* .154 W*
Screw Torque .356 W* .438 W*
Jack Efficiency 21.9% 35.5%
Jack Cooling Time (T) 262 minutes 262 minutes
Base Weight (Lbs) 650 650
Add for Each Inch of Travel (Lbs) 5.5 5.5
W*= Load in pounds
Pinion Torque: Torque required to continuously raise a given load.
Screw Torque: Torque required to resist screw rotation in translating jack designs and the torque required to resist rotation of the
traveling nut in Keyed for traveling nut designs.
Lead: The distance a screw advances axially in a single turn
Pitch: the distance from to point on a screw thread to a corresponding point on the next thread, measured axially
* JAX Software: available at www.joycedayton.com/Downloads.