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          Tower Crane

          Home » Products » Tower Crane » QTZ125 Tower Crane
          Tower Crane

          QTZ125 tower crane is an upper-slewing fixed type light crane that is widely used for constructing various kinds of industrial and civil buildings. Due to its compact structure, the crane is especially suitable for construction sites with tight space and complicated landform.

          The tower crane consists of lifting, slewing and luffing mechanisms, which can work respectively or together for higher efficiency. The lifting mechanism adopts a double speed motor to achieve fast hoisting and slow motion speeds. The jib can rotate 360° freely. The reliable horizontal jib frame and flexible travel trolley help ensure the accurate operation of the crane. The tower crane can satisfy both vertical and horizontal transportation needs.






          Technical Parameters of QTZ125 Tower Crane

          Item Unit 2multiplying power 4multiplying power
          Rated lifting moment kN.m 1250
          Maximum lifting weight t 5 10
          Working range m 3~60
          Lifting weight at maximum range t 1.803 1.769
          Range of maximum lifting weight m 27.155 14.867
          Lifting height Independent type m 50
          Attached type 180 90
          Lifting speed m/min 104/52.05 50.05/25.02
          Slewing speed r/min 0.61
          Luffing speed m/min 58.6/29.3/8.79
          Jacking speed 0.4
          Minimum stable falling speed ≤5
          Whole machine shape size Underbed m 7.76x7.76
          Whole machine height(independent) 60.502
          Lifting arm end to slewing center 61.383
          Tail of balance arm to slewing center 14.82
          Dead weight Structure weight(independent) t 53.506
          Balance weight Max range 60m 18.5
          Max range 56m 16.7
          Max range 50m 13.9
          Electric motor total capacity kW 60.85
          Permitted working temperature -20~+40
          Wind scale at max installing height when installing, dismantling, jacking or declining section Scale ≤4
          Working condition wind scale ≤6
          Non-working condition wind scale ≤11
          Power supply parameter ~380V±10%, 50Hz

          Fittings List?

          Mechanism load ability Lifting mechanism M5
          Slewing mechanism M4
          Luffing mechanism M4
          Lifting mechanism Electric motor Type YZRDW280M-4/8-55/55
          Power (kW) 55/55
          Height limiter Type FKDX-G
          Steel rope Specification 6X37-16-1770
          Max. traction force(N) 25000
          Multiplying power a=2 a=4
          Lifting speed (m/min) 104 52.05 50.05 25.02
          Rated lifting weight(t) 2.5 5 5 10
          Min. stable falling speed m/min ≤5
          Slewing mechanism Electric motor Type YZR160M1-6
          Power (kW) 5.5×2
          Rotating speed (r/min) 908
          Speed reducer Type XX4-120AI
          Transmission ratio 195
          Hydraulic coupling Type YOX280A
          Slewing small gear Modulus m 12
          Tooth quantity z 17
          Modification coefficient +0.5
          Slewing speed r/min 0.61
          Slewing bearing Single-row four-point contact ball type slewing bearing Type 011.45.1400
          Modulus m 12
          Tooth quantity z 131
          Modification coefficient +0.5
          Hydraulic jacking mechanism Electric motor Type Y132M2-6
          Power (KW) 5.5
          Oil cylinder rated working pressure Mpa 30
          Max. jacking force T 60
          Oil cylinder stroke Mm 1600
          Installation distance Mm 2070
          Oil cylinder diameter Mm φ160
          Oil cylinder piston diameter Mm φ110
          Jacking speed m/min 0.4
          Luffing mechanism Electric motor Type YZTDE180M-4/8/24
          Power (KW) 5/3.7/1.1
          Steel rope Type 6×19-9.3-1550
          Speed reducer Type XX3-14.40
          Transmission ratio 39.7
          Luffing speed m/min 58.6/29.3/8.7

          Lifting Performance Table

          Range (m) 4 multiplying power (t) 2 multiplying power(t)
          3~14.867 10 5
          15 9.903 5
          16 9.225 5
          17 8.627 5
          18 8.095 5
          19 7.620 5
          20 7.192 5
          21 6.804 5
          22 6.452 5
          23 6.131 5
          24 5.836 5
          25 5.565 5
          26 5.314 5
          27 5.083 5
          27.155 5.049 5
          28 4.868 4.823
          29 4.667 4.668
          30 4.480 4.446
          31 4.305 4.315
          32 4.141 4.275
          33 3.987 4.116
          34 3.842 3.824
          35 3.706 3.691
          36 3.576 3.565
          37 3.454 3.446
          38 3.339 3.333
          39 3.229 3.226
          40 3.125 3.125
          41 3.025 3.028
          42 2.931 2.936
          43 2.841 2.848
          44 2.755 2.764
          45 2.673 2.684
          46 2.594 2.607
          47 2.519 2.534
          48 2.447 2.464
          49 2.378 2.396
          50 2.311 2.332
          51 2.247 2.270
          52 2.186 2.210
          53 2.127 2.152
          54 2.070 2.097
          55 2.015 2.043
          56 1.963 1.992
          57 1.912 1.942
          58 1.862 1.894
          59 1.815 1.848
          60 1.769 1.803

          As a major tower crane manufacturer based in China, we also provide topless tower crane, concrete mixer, concrete batching plant, wheel loader, and more.

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