1. tech data performance table
|  rated lifting torque | kN.m | 1250 | ||||
| max. Lifting capacity | t | 8 | ||||
| working range m | m | 3~60 | ||||
| lifting height | free standing height | 50 | ||||
| with wall tie ins type | 180 | |||||
| lifting speed | 2-lines | m/min | 101.5/51.83 | |||
| 4-lines | 49.11/25.08 | |||||
| slewing speed | r/min | 0.65 | ||||
| ranging speed (FBF1250A) | m/min | 58.6/29.3/8.79 | ||||
| climbing speed | 0.4 | |||||
| lower descending speed | ≤5 | |||||
| outline dimension | Foundation frame | m | 8×8 | |||
| Â total height | free standing height | 60 | ||||
| with wall tie in type | 190 | |||||
| jib tip to slewing center | 63.372 | |||||
| rear part of counterjib to slewing center | 14.82 | |||||
| dead load | structure weight | free standing height | t | 58.508 | ||
| with wall tie ins type | 113.628 | |||||
| counterweight | 20.8 | |||||
| power | kW | 60.85 | ||||
| allowed working temperature | Dge c | -20~+40 | ||||
| power supply | 50Hz | ~380V±10% | ||||
| Â | Â | Â | Â | Â | Â | Â |
2.  main tech datas
| Â mechanism load | Â lifting mechanism | M5 | |||
| slewing mechanism | M4 | ||||
| ranging mechanism | M4 | ||||
| Â lifting mechanism |
 motor | type | YZRDW250-4/8 | ||
| power (kW) | 37/37 | ||||
| height limiter | Â type | FKDX-G | |||
| wire rope | Â type | 6X37-15-1770 | |||
| Â max. Pull forece(N) | 20000 | ||||
| Â factor multiplification | a=2 | a=4 | |||
| lifting speed (m/min) | 101.5 | 51.83 | 49.11 | 25.08 | |
| rated lifting capacity (t) | 1.6 | 4 | 3.2 | 8 | |
| min lower speed | m/min | ≤5 | |||
| Slewing mechanism | motor | Â type | YZR160M1-6 | ||
| power (kW) | 3.7×2 | ||||
| Â slewing speed(r/min) | 960 | ||||
| Â reducer | Â type | XX4-100.185 | |||
| Â driving ratio | 185 | ||||
| hydraulic coupling | type | YOX280A | |||
| slewing pinion | modulus    m | 12 | |||
| teeth z | 15 | ||||
|
+0.5 | ||||
| slewing speed | r/min | 0.61 | |||
| slewing ring | one line four point connecting t | Â type | QWA.1400.45 | ||
| Â Â Â modulus m | 12 | ||||
|  teeth z | 133 | ||||
| hydraulic climbing mechansim | motor | Â type | Y132M-4B5 | ||
| Â power(KW) | 5.5 | ||||
| Â oil tank rated working perssure | Mpa | 30 | |||
| max. Climbing force | t | 60 | |||
| oil tank travelling distance | mm | 1600 | |||
| installing distance | mm | 2070 | |||
| oil tank diameter | mm | φ160 | |||
| oil tank pistl diameter | mm | φ110 | |||
| Â climbing speed | m/min | 0.4 | |||
| Ranging mechnism | Â motor | type | YZTDE180M-4/8/24 | ||
| power (kW) | 5/3.7/1.1 | ||||
| wire rope | description | 6×19-9.3-1550 | |||
| reducer | Â type | XX3-14.40 | |||
| driving speed | 39.7 | ||||
| Â raning speed | m/min | 58.6/29.3/8.79 | |||
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Description of QTZ series tower Crane
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1) the tower crane is one of the most popular type and hot-selling self-erecting tower crane, which is researched and designed by Institute of Building Mechanization of China Academy of Building Research. It absorbs many advanced technology both from China mainland and abroad.
2) We adopt to use Dual drawbars structure on lifting boom, which enables the lifting boom to be unfer no stress at lifting surface other than uniaxial stress, and moreover, it gets rid of the stress peak. It greatly improves the fatigue safety performance of lifting boom.
3) Adopts VVVF stepless speed variation device for lifting, radius changing and slewing mechanisms, to make sure it works steadily and effectively, it also lowers the maintenance cost.
4)We can offer crane standard sections such as the FO/23B standard sections for customers to choose from.Â
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3. Service
1.) Providing timely delivery, standby engineers are ready to solve any problems
2.) Providing 12 (twelve only)months product warranty period,with ample spare parts
3.) Providing work site installation guidance and training of operation and maintenances
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The Tiema Hose Protection Sleeve is the culmination of decades of experience in the Hydraulic Hose and hose fittings industry. Ourhydraulic hose protector are designed to meet the most stringent of international safety standards, whilst also actively preventing rubber hose damage and potential injury.during the construction process, the hydraulic pipe without the protective sleeve is hit and bursts or the pressure of the hose itself bursts due to excessive pressure. The hydraulic oil in the pipe may leak and cause the machine to be contaminated. On the one hand, the hydraulic hose sleeve can prevent the hose from being injured. And spiral guard can also prevent the hydraulic oil from splashing around after the hose itself bursts.
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