Road construction machinery famous brand motor grader SEM 921 from China top supplier
Advantages of motor grader SEM921
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.
SEM 921 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 of motor grader SEM921
| 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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