Road construction machinery SEM921 motor grader

Advantages of SEM921 motor grader:

Motor grader SEM921

Seven hole link rod control system

· Electric hydraulic controlled seven hole link rod structure

· Appropriate hole site is used to make sure the shovel can touch the bottom of groove when cleaning the dense vegetation in ditch.

· Replaceable bushing in the link rod hole makes it easier to maintain so as to reduce service time and maintenance

Shovel floating function

· Shovel can hugs the ground with self gravity and moves with the undulating of the ground when double cylinder float at the same time to protect the hard pavement.

Mainly used in snow removing and road rubbish cleaning.
· One side shovel can hugs hard working surface with one cylinder floating and the other side can control the slope angle by lifting cylinder.

A-shaped traction frame

· A-shaped traction frame is consisted of two square steels with good durability, high life length and low failure rate.
· Ball joint can adjust gap (shim) based on the wear condition to reduce maintenance cost.
· Detachable connecting ball joint is fixed by bolt for easier change.

Box structured front axle

· Flange box structure design
· Continuous top and bottom plate structure
· Front frame is arranged by side pipes to maintain easily.
· Self lubricating bushing is used for key parts to improve reliability and reduce maintenance cost.

SEM921 motor grader comfortable cab

· Located on the front frame, cab has a clear view of traction frame, turntable and shovel for driver to control shovel exactly.
· Large space(1.9meter height) allows standing operation, capacity increased 30%.
· Front wheel steering can be seen clearly when bending to make sure operating safety and accuracy.

Specifications:

Item	SEM919	SEM921
Overall weight (kg)	15070	15930
weight – front axle(kg)	4236	4744
weight – back axle(kg)	10834	11186
Front / back axle load distribution	28% /72%	30% /70%
Overall dimension(mm)	8703*2630*3360	8854*2630*3360
Max. Tractive Force(KN)	≥78	≥85
Max. forward speed(km/h)	40	40
Max. backward speed(km/h)	25	25
Engine	Shangchai	Shangchai
Model	SC9DK190.1G3	SC9DK220G3
Rated power(kw)	140	162
Rated revolution(rpm)	2200.0	2200.0
Displacement(L)	8.8	8.8
Transmission	Hangzhou advance gearbox	Hangzhou advance gearbox
Gear	6 in the front 6 and 3 in the back	6 in the front 6 and 3 in the back
Hydraulic system	load sensing, proportional priority with pressure compensation	load sensing, proportional priority with pressure compensation
Working pump	Variable Piston Pump	Variable Piston Pump
Working valve	Proportional priority with pressure compensation	Proportional priority with pressure compensation
Tire	Diagonal tire with inner tube	Diagonal tire with inner tube
Layer/pattern	12pr, E2/L2	12pr, E2/L2
Model	17.5-25	12pr, E2/L2
Max. articulation angle(°)	±20	±20
Min. turning radius(m)	≤7.8	≤7.8
Shovel floating	Standard	Standard
Shovel length(m)	4.0	4.3

 

 

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190hp model SEM919