Brand: Mingwei
Model: QTZ25
Min. Order: 1set
QTZ25
1. QTZ25 tower crane is the horizontal arm frame、trolley、rotary hydraulic lifting crane.
2. Max. radius is 60m, free standing height is 25m,and attached height is 60m.
3. This crane adopt Advanced specification, reliable performance,good looks, and advanced safety features, also is the ideal construction machinery of Small and medium-sized construction enterprise.


The lifting characteristics
Range( m ) 3～11 12 13 14 15 16 17 18
Lifting Weight (t) 2.50 2.29 2.1 1.94 1.73 1.63 1.51 1.46
Range( m ) 19 20 21 22 23 24 25 26 27
Lifting Weight (t) 1.38 1.30 1.21 1.16 1.10 1.05 1.00 0.95 0.89
Range( m ) 28 29 30 32 34 35 　
Lifting Weight (t) 0.86 0.83 0.80 0.72 0.64 0.60 　
QTZ25


SHANDONG MINGWEI HOISTING EQUIPMENT CO., LTD
name parameter
hoisting
mechanism
electromotor type Unit YZD200L1-4/8/24
power K w 11/11/3.2
swiveling speed r/min 1430/720/240

Reducer type
center distance mm 400
ration 15.75
arrester type YWZ- 250-45
brake moment N·m 250
wire rope 6*37-11-1770-I-first -right into

slew mechanism
electromotor
type YD112M-4
power K w 2.2
Swiveling speed r/min
hydraulic coupling mechanism YOX-224
ranging
mechanism
electromotor type YD90L-4
power K w 1.5
Swiveling speed r/min
Reducer type primary


　　　　　　　　31
ration

Hydraluic climbing
mechanism
electromotor type Y112M-4
power K w 2.2
swiveling speed r/min 1440
hydraulic ram 24
cylinder stroke mm 1320
Operating press of hydraulic oil tank M pa 15


QTZ25． main auxiliary equipment parameter table
name
unit parameter
Rated Load moment KN·m 250
Max hoisting capacity t 2.5
Max. lifting capacity at jib tip t 0.6
working range m 3---35

height Freestanding m 25
adhered m 60

hoisting speed Double fall a=2
lifting speed m/min 46/23/5.2
swiveling speed r/min 0.69
allowed operating temperature ℃ -20～+40
Power supply parameters V 380+10%
380-10%