SCC550A Sany crane - load chart, specs & dimensions (2017 - 2023)

Main Characteristics

Fully-enclosed steel frame structure is adopted, and the front, side, and the top of the cab are installed with large high-strength tempered glass, which admits sufficient light. The operator's cab is bright with ample space, providing a wider view and isolating noise in a better way. A multimode and multilevel adjustable suspension seat brings the most comfortable driving experience for the operator. The design of the air outlet of the air conditioner is more reasonable. A better man-machine interactive interface is realized through an integrated 8.4-inch touch screen and programmable key switch. The left console is mounted with a swing/auxiliary winch hydraulic-controlled cross handle, control buttons, emergency stop, radio, and A/C panel; the right console is mounted with main winch/boom hoist hydraulic-controlled cross handles, as well as ignition and engine throttle buttons. Walking pedals and walking joysticks are arranged on the front side, making the total layout more human-friendly.

Swing Mechanism

Intermittent swing drive can swing the upperworks by 360°. A swing lock device is installed, allowing the upperworks to be locked tightly when the operation is over or the machine is in transport. The swing support features a single row ball bearing, and the swing speed ranges from 0 to 1.9 rpm.

Illuminating Light

The machine is equipped with a short-beam light in front, a front angle adjustable far-beam light, lamps in the operator's cab, and lighting devices for night operation, all designed to increase visibility during work.

Rearview Mirror

The rearview mirror is installed on the left of the operator's cab and at the front handrail of the sheet metal, allowing for monitoring the rear part of the machine.

Lowerworks

Independent travel driving units are adopted for each side of the crawler, to realize straight walking and turning driven by travel motor through gearbox and drive wheel.

Crawler Extension and Retraction

The crawlers can extend and retract via cylinders. During Work Mode, the crawlers must be extended, and be retracted during transport with crawlers on.

Extension Jib

The extension jib is a welded structure connected to the boom by pins, used for auxiliary hook. Extension jib length: 1.0m.

Load Moment Indicator (LMI)

It is an independent computerized safety control system. LMI can automatically detect the load weight, work radius and boom angle, and present on the display the rated load, actual load, work radius and boom angle. In normal operation, the LMI can make a judgment and cut off automatically if the crane moves towards dangerous direction. It can also perform as a black box to record the lifting information. It is composed of monitor, angle sensor, force sensor and other parts.

Over-hoist Protection of the Main/Auxiliary Load Hoist

Over-hoist protection device comprises limit switch and weight on boom top, which prevents the hook lifting up too much. When the hook is lifted up to the limit height, the limit switch activates, the buzzer on the left control panel sends an alarm, the failure indicator light starts to flash, and the hook hoisting action is cut off automatically.

Over-release Protection Device of the Main/Auxiliary Load Hoist

It is comprised of an activator in the drum and a proximity switch to prevent over-release of wire rope. When the rope is paid out close to the last three wraps, the proximity switch acts, and the system sends an alarm through the buzzer and shows the alarm on the monitor, automatically cutting off the winch action.

Boom Limit Device

When the boom elevation angle reaches the upper limit, the buzzer sounds and boom action is cut off. This protection is two-stage control ensured by both LMI system and travel switch.

Boom Angle Indicator

The pendulum angle indicator is fixed on the side of the boom base close to the cab, providing convenience to the operator. The lifting hook is installed with a baffle plate to prevent the wire rope from falling off.

Tri-color Load Indicator

The load indicator light has three colors: green, yellow, and red, and the rated load status is presented on the display. When the actual load is smaller than 90% of the rated load, the green light is on; when the actual load is larger than 90% and smaller than 100%, the yellow light is on, the alarm light flashes, and sends out intermittent sirens; when the actual load reaches 100% of the rated load, the red light is on, the alarm light flashes, and sends out continuous sirens. At this moment, the system will automatically cut off the crane's dangerous operation.

Alarm Light

When the machine is powered on, the alarm light will work when the time comes, to warn people around.

Electronic Level Gauge

It displays the tipping angle of the crane on the monitor in real time and sends out an alarm to the operator automatically when the angle is out of limit.

Emergency Stop

Emergency Stop In emergency situation, this button is pressed down to cut off the power supply of the whole machine and all actions stop.

Engine Status Monitoring

The engine status will be presented, such as engine coolant temperature, fuel volume, total work hours, engine oil pressure, engine speed, battery charging and voltage.

Closed Circuit Monitoring System

The optional camera monitoring system can show the wire rope reeving on each winch, surrounding behind counterweight and environment around the machine.

Electrical Control System

SYC-2 integrated control system independently developed by SANY is adopted to ensure high system integration and accurate operation. The control system mainly includes power system, engine system, main control system, LMI system, auxiliary and safety monitoring system. Main electrical components are from internationally or industrially well-known brands, which can perform stably in such bad environment as in severe low or high temperature, plateau, and sandstorms. The controller, monitor, and the engine communicates through CAN Bus.

Hydraulic System

Main pump: adopt open piston pump with large displacement, providing oil supply to the main executor. Gear pump: dual gear pump for swing, radiator and control circuit. Control: the main pump adopts the control type of electrically proportionate positive flow, and the winch motor is piston motor with variable displacement. The operating components are two cross hydraulically-controlled handles, one dual valve for travel pedal to control each executor proportionally. Max. pressure of system: Main load, aux. load, boom/jib winch and travel system: 32MPa Swing system: 20MPa Control system: 4.5MPa Hydraulic fuel tank capacity: 460L.

Monitoring System

Remote Monitoring system is a standardized offering to provide functions like GPS locating, GPRS data transfer, machine status inquiry and statistics, operating data monitoring and analysis, and remote diagnosis of failures.

Safety Device

Assembly Mode/Work Mode Switch In Assembly Mode, certain safety devices are disabled to facilitate crane assembly. In Work Mode, all safety limiting devices activate to protect the operation.

Function Lock

If the function lock level is not in work position, all the other handles won't work, which prevents any mis-operation caused by accidental collision.

Boom Hoist Drum Lock

Boom lifting lock switch is designed to lock the boom luffing winch when it doesn't work, so as to prevent mis-operation. Boom hoist winch pawl can automatically respond when the control handle moves, and the pawl locks the drum when the handle returns to neutral position, so that the boom can stay safely when not working.

Back-stop Device

Its major components are nesting tubes and spring, in order to buffer the boom backslash and prevent further tipping back.

Seat Interlock

If the operator leaves the seat, all control handles will be locked immediately to prevent any mis-operation due to accidental collision.