| QTZ31.5 Series Technical Parameter |
| Tower Crane Model |
QTZ31.5(T3808) |
QTZ31.5B(T4207) |
| Rated Hoisting Moment (KN.m ) |
315 |
| Working Amplitude(m) |
2.5-38 |
2.5-42 |
| Max. Hoist Weight(t ) |
3 |
| Height of Independent Type |
Height of Independent Type(m ) |
27 |
| Height of Attached Type(m ) |
100 |
| Hoisting Speed(m/min) |
7/40/60 |
| Slewing Speed(r/min) |
0.36/0.71 |
| Luffing Speed(m/min) |
22/33 |
| Material for Main Brackets of the Tower |
φ108X8-1500
20#
∠125X10-1500
Q235-B |
φ108X12-1500
20#
∠140X12-1500
Q235-B |
| Hoist Arms |
Main Materials for Top Boom |
φ76X5
φ76X7
20# |
φ76X5
φ76X7
20# |
| Main Materials for Lower Boom |
[ 8
Seal plate
Q235-B |
[ 8
Seal plate
Q235-B |
