Product Description
QY50K5D‑3 is the compact upgraded version of QY50K5D 50‑ton truck crane. It adopts high‑strength U‑shaped five‑section boom, full‑boom extension time is around 85 seconds. Compact overall dimension: 14155 mm × 2650 mm × 3480 mm, ultra‑low body height of 3.48 m and narrow 2.65 m width greatly improve trafficability for height‑limited and narrow passages such as tunnels, culverts and rural roads.
Double‑stage H‑type outriggers provide large supporting span for stable operation. Adopting proprietary double‑pump automatic flow dividing‑combining hydraulic technology, multi‑stage buffer control and load anti‑disturbance function, slewing action remains stable without disturbance from air‑conditioning startup‑stop; compound movements and micro‑motion control are highly precise for accurate component positioning.
Powered by high‑torque diesel engine, peak torque 1500 N·m, matched with 9‑speed synchronized transmission, max travel speed reaches 90 km/h and grade‑ability up to 45%, enabling strong capacity on complex road conditions. The operator cabin is equipped with air‑conditioning, large‑size multi‑function display and automatic working‑condition planning function, with standard tri‑color warning lamp. Multiple safety modules including load moment limiter, outrigger monitoring and anti‑tilt warning fully satisfy overseas construction safety standards. Counterweight supports two assembly combinations: 8 t full counterweight or 5 t partial counterweight for flexible transfer requirements.
Product Advantages
Compact Body & Excellent Trafficability：3.48 m ultra‑low height, 2.65 m narrow width, good pass‑ability for tunnels, bridges, culverts and narrow urban & rural roads。
Strong Lifting Performance：50 t rated lifting capacity, 44 m five‑section U‑shape main boom, max lifting torque 1600 kN·m, max lifting height 53 m with jib, meets various medium‑heavy hoisting demands。
Advanced Hydraulic Control Technology：Double‑pump auto flow‑dividing‑combining system, multi‑stage buffer control and load anti‑disturbance technology, stable slewing, smooth compound actions and outstanding micro‑maneuver for precise lifting positioning。
Flexible Counterweight Combination：Supports 8 t full counterweight and 5 t partial counterweight options, convenient for road transfer without full disassembly。
Powerful Transit Capacity：High‑torque diesel engine, peak torque 1500 N·m, max travel speed 90 km/h, 45% grade‑ability for complex road‑site relocation。
Intelligent Operation Configuration：Automatic working‑condition planning function, large‑size display, standard tri‑color warning lamp to improve operation convenience and safety reminder。
Complete Safety Protection：Load moment limiter, outrigger monitoring system, hook height limit protection, slewing buffer and hydraulic counter‑balance valves to lower operational risks.
Technical Data Sheet
Item | QY50K5D | QY50K5D‑3 | Unit |
Max. Rated Lifting Capacity | 50 | 50 | t |
Max. Main Boom Length | 45 | 44 | m |
Boom Sections | 5 | 5 | ‑ |
Max. Lifting Height (with jib) | 54 | 53 | m |
Max. Basic‑boom Lifting Torque | 1600 | 1600 | kN·m |
Overall Dimension(L×W×H) | 14375×2650×3625 | 14155×2650×3480 | mm |
Total Travel Weight | 38800 | 38000 | kg |
Engine Rated Power | 251/1900 | 251/1900 | kW/(r/min) |
Max. Travel Speed | 90 | 90 | km/h |
Max. Grade‑ability | 44 | 45 | % |
Fuel Tank Volume | 350 | 350 | L |
Outrigger Span(Longitudinal×Transverse) | 6100×7400 | 6100×7350 | mm |
Counterweight Combination | 5t / 8t | 5t / 8t | ‑ |
Product Applications
‑ High‑rise steel‑structure installation and large‑scale building construction
‑ Urban reconstruction projects, narrow‑space city site hoisting
‑ Municipal infrastructure, bridge and viaduct construction
‑ Factory heavy‑duty equipment disassembly, handling and relocation
‑ Highway, transit and large‑scale industrial park engineering
‑ Medium‑heavy‑load hoisting and emergency rescue lifting works
Operation Guidelines
Pre‑operation Inspection Check engine oil, hydraulic oil level, tire pressure, outrigger structure, steel wire rope wear condition, hook safety latch and all safety alarm devices including tri‑color warning lamp. Ensure no personnel stay inside the working radius.
Site Preparation Park the machine on solid and flat ground. Fully extend four H‑type double‑stage outriggers with supporting pads to keep chassis horizontal. Select proper counterweight combination according to lifting tasks. Lock outrigger safety mechanism. Strictly follow lifting‑capacity chart according to actual working radius and boom length.
Lifting Operation Start engine and warm‑up hydraulic system. Make full use of automatic working‑condition planning function. Operate boom luffing, extension, slewing and hoisting slowly. Avoid sudden composite actions. Never exceed rated lifting load and prevent suspended load swinging. Take advantage of fine micro‑motion performance for precise component placement.
Transfer Travel Fully retract main boom, secure hook and accessories, retract all outriggers. Choose matched counterweight configuration and confirm counterweight is firmly locked. Drive within speed limit, pay close attention to road height‑limit for its compact‑body feature.
Post‑operation Maintenance Park on safe flat ground, retract boom and store hook properly. Shut down engine and complete daily routine inspection.
FAQ
Q1: What are the main differences between QY50K5D and QY50K5D‑3?
A1: QY50K5D‑3 is compact‑optimized upgrade version. It adopts shorter 44 m main boom, lower overall height 3.48 m, shorter body length, better trafficability for height‑restricted sites. It adds load anti‑disturbance technology, automatic working‑condition planning and standard tri‑color warning lamp, with upgraded hydraulic control performance.
Q2: What counterweight options are available for QY50K5D‑3?
A2: Two counterweight combinations: 8 t full counterweight for heavy‑load hoisting jobs; 5 t partial counterweight for convenient road transfer without complete disassembly.
Q3: What are the highlights of its hydraulic system?
A3: It adopts double‑pump automatic flow‑dividing‑combining technology, multi‑stage buffer control and load anti‑disturbance function. Slewing performance will not be affected by air‑conditioning startup‑stop, realizing smooth and precise operation under heavy‑load conditions.
Q4: What export shipping options are available?
A4: New unit can be shipped by ro‑ro vessel or bulk carrier. Partial disassembly solution is available for container transportation based on customer logistics arrangement.
Q5: What about after‑sales support?
A5: Original spare parts, operation‑maintenance manuals and operation video guidance are supplied. Overseas authorized service networks cover multiple regions.
