Used Motor Grader SEM919 for Sale

Product Introduction

SEM919 is a motor grader product of Caterpillar’s Shangong Machinery. It is a kind of earthmoving machinery. It can be used for road construction, urban construction, and some expressway maintenance and snow removal conditions. If you add With the addition of a ripper behind the dozer blade, more work can be done.

Product Features

1. Caterpillar homemade rear axle Improved bearing layout, reasonable load distribution, and longer life; caliper disc brakes, performance improved by 20%, more reliable; four-planetary gear arrangement for final drive, stronger load-carrying capacity; external brakes, easy maintenance; no grease injection requirements, saving Time, effort and money are saved.  2. Seven-hole connecting rod control system (optional) The seven-hole linkage mechanism controlled by electro-hydraulic can switch the hole position in the cab; using the appropriate hole position can ensure that the blade can touch the bottom of the ditch when clearing the overgrown vegetation in the ditch; The adjustment of the rod hole position can better adjust the angle between the blade and the ground, which is convenient for repairing the drainage ditch and the back slope of the river bank. When positioned at the end hole position, the blade can reach 90 degrees perpendicular to the ground, which is convenient for high-back slope operations; standard replaceable bushings in the connecting rod holes are convenient for maintenance and repair, and can reduce service time and maintenance costs. 3. Blade floating function The standard blade floating function reduces work difficulty and improves work efficiency. When the double oil cylinders are floating at the same time, the blade relies on its own gravity to cling to the ground and move up and down with the undulation of the ground to protect the hard road. Used for snow removal and road rubbish removal. The single lifting cylinder is floating, which can make one side of the blade close to the hard working surface, and the other side of the lifting cylinder is used to control the inclination of the blade. 4. Load sensing hydraulic system The PPPC (Proportion Priority, Pressure Compensation) control valve specially designed by Caterpillar for motor graders distributes power according to demand and flow according to proportion, ensuring that the driver can operate the machine to complete multiple compound actions and significantly improve work efficiency. The variable displacement plunger pump is used to reduce energy loss, reduce heat generated by the hydraulic system, and reduce fuel consumption. Load-sensing hydraulics provide predictable, precise implement movement for improved work quality and productivity.  The PPPC valve has a built-in lock valve to prevent internal leakage of the valve core, maintain the position of the machine tool when there is no hydraulic operation, and ensure the quality of work; prevent accidental movement of the machine tool and avoid accidental injury to personnel. 5. Type A drawbar The A-type traction frame is composed of two square steels, which has good durability, long service life and low failure rate. The ball head can adjust the gap (adjustment gasket) according to the wear condition, reducing the maintenance cost of the user. The detachable connection ball head is fixed with bolts for easy replacement. 6. Box structure front frame The box-type structure design with flange keeps the high-stress area away from the weld seam, which improves reliability and durability and prolongs the service life of the structural parts. The continuous top and bottom plate structure provides good consistent strength and fully complies with the design requirements of Caterpillar's structural parts, which can prolong the life of the front frame and reduce the cost of use. The pipes are arranged on the side of the front frame for easy maintenance. Key parts use self-lubricating bushings to improve reliability and reduce maintenance costs. 7. Reasonable manipulation layout Inheriting Caterpillar's leading industry-standard joystick layout, short travel and well-spaced controls allow the operator to operate multiple joysticks with one hand. Light control force reduces driver fatigue. 8. Spacious and comfortable cab The cab is located on the front frame, and the position of the traction frame, turntable and blade can be clearly seen, which is helpful for the driver to control the position of the blade more precisely. Tall and spacious (1.9 meters high), it can be operated standing up, and its volume is 30% larger. The steering of the front wheels can be clearly seen when the waist is bent, ensuring the safety and accuracy of the operation.