Features:
• The innovative jib system adopts embedded block, plug-in boom head and international advanced U section jib, which has excellent lifting performance and safe and reliable lifting work.
• The unique stretch and retract technique avoids the bend of the core pipe and cylinder and the break of the boom caused by misoperation, improving the safety of the operations.
• Eight patent techniques ensure the smooth, high efficiency and energy conservation of the lifting, rotation, and luffing systems.
• Adopt the new hydraulic motor with big torque starting point, making the secondary lifting safer.
• The torque limiter adopts colorful LCD display, realizing the intelligence of the failure diagnosis. The precision is ahead of the industry.
• The humanity design makes the cab and control cab more spacious, and easy to operate.
• Six unique manufacturing technologies ensure the high quality.
Parameters:
| Dimensions | Unit | QY50K- |
| Overall length | mm | 13,750 |
| Overall width | mm | 2800 |
| Overall height | mm | 3520 |
| Weight | ||
| Total weight in travel | kg | 41,000 |
| Front axle load | kg | 15,000 |
| Rear axle load | kg | 26,000 |
| Power | ||
| Engine model | WD615.334(domestic III) | |
| Engine rated power | kW/(rpm) | 247/2200 |
| Engine rated torque | N.m/(rpm) | 1350/1400 |
| Travel | ||
| Max travel speed | kph | 80 |
| Min turning diameter | m | 24 |
| Min ground clearance | mm | 291 |
| Approach angle | ° | 17 |
| Departure angle | ° | 11 |
| Max grade ability | % | 40 |
| Fuel consumption for 100km | L | 45 |
| Main performance | ||
| Max rated total lifting capacity | T | 50 |
| Min rated working radius | m | 3 |
| Turning radius at turntable tail | m | 3.482 |
| Max lifting torque | kN.m | 1764 |
| Base boom | m | 11.3 |
| Fully extended boom | m | 42.7 |
| Fully extended boom+ jib | m | 57.7 |
| Longitudinal outrigger span | m | 5.91 |
| Lateral outrigger span | m | 6.9 |
| Working speed | ||
| Boom luffing time | s | 88 |
| Boom full extension time | s | 180 |
| Max swing speed | rpm | ≥2.0 |
| Max speed of main winch (single rope) (no load) | m/minute | ≥110 |
| Max speed of aux winch (single rope) (no load) | m/minute | ≥110 |
