QTZ900B topkit tower crane Technical Parameter:
1. Freestanding height: 90.8m; Travelling height: 86.66m
2. Jib length: 70m/60m/50m/40m
3. Max. load: 50t
4. Tip load: 9.1t
5. Radius:5.7-70m
6. Mast section: 4.0*4.0*5.78m
7. Anchorage height:125.48m/165.94m/206.4m/246.86m
8. Type: Stationary, travelling, other types you need
| QTZ900B topkit tower crane Technical Parameter |
| Jib length | 70m |
| Mast Section | 4.0*4.0*5.78m |
| Max. Hoisting Weight(t) | 50 t |
| Mechanisms | 2 falls | 4 falls | Drum capacity | Motor |
| Hoisting | m/min | 23 | 46 | 11.5 | 23 | 600m | 110KW |
| t | 25 | 12.5 | 50 | 25 |
| Trolleying | m/min | 0-50 | 24KW |
| Slewing | r/min | 0-0.55 | 2*18.4KW |
| | r/min | 0-0.55 | 4*155Nm |
| Travelling | m/min | 0-17 | 8*1.7/3.4KW |
| Power Supply | 380v 50Hz/440v 60Hz 200KVA |
Load diagram
| Jib(m) | Fall | R(Cmax)m | C(max)t | 30 | 40 | 50 | 65 | 70 |
| 70 | IV | 19.9 | 50.0 | 30.2 | 21.7 | 15.8 | 11.9 | 9.1 |
| II | 35.9 | 25.0 | 25.0 | 21.7 | 15.8 | 11.9 | 9.1 |
| 60 | IV | 21.1 | 50.0 | 32.6 | 23.5 | 17.3 | 13.1 | |
| II | 38.1 | 25.0 | 25.0 | 23.5 | 17.3 | 13.1 | |
| 50 | IV | 21.1 | 50.0 | 32.6 | 23.5 | 17.3 | | |
| II | 38.1 | 25.0 | 25.0 | 23.5 | 17.3 | | |
| 40 | IV | 21.1 | 50.0 | 32.6 | 23.5 | | | |
| II | 38.1 | 25.0 | 25.0 | 23.5 | | | |
Counter-jib ballast
| Boom length | Loading weight | Anchorages(m) | Mast section and collar ties |
| 70m | 11t | 90.8m(Free standing height) | 14 sets |
| 60m | 15t | 125.48m | 6 sets of mast section,1 unit collar tie |
| 50m | 18.3t | 165.94m | 13 sets of mast section, 3 uints collar ties |
| 40m | 24t | 206.4m | 20 sets of mast sections, 4 units of collar ties |
| | | 246.86m | 27 sets of mast sections, 6 sets of collar ties |
We offer kinds of topkit tower cranes:
1.2T: QTG20(TC3065,3558),QTZ20(TC3065,3558)
2.3T: QTZ31.5(TC3808,4207,4208)
3.4T: QTZ40(TC4208,4708,4808)
4.5T: QTZ50(TC5010),QTZ80-M(TC5013)
5.6T: QTZ63(TC5211,5510),QTZ80G6(TC5013,5513)
6.8T: QTZ80G8(TC5513,5015,5512,5017,6010),QTZ125(TC6018,6313)
7.10T: QTZ125(TC6015),QTZ160(TC6516),QTZ140H10(H25/14,TC6014),QTZ145F10(F0/23B)
8.12T: QTZ250H12(H3/36B),K30/30(TC7030)
9.14T: QTZ250K14(K35/32,TC7032)
10.16T: QTZ260BK16(TC7026,K40/26)
11.20T: S450K20(TC7050,K50/50)
12.25T: QTZ400L25(TC7540)
13.32T: QTZ900A
14.50T: QTZ900B