Wheel Loader SEM650B Rated load 5ton
Tailored for heavy-duty applications.
Optimized for ports, mines, steel mills, hard rock earthmoving applications
• High Reliability
• Robust countershaft design prolongs the life by 30%-50% in tough applications.
• Caterpillar patented design cooling package guarantee 24 hours continuous operation.
• Caterpillar resourcing hydraulic components and delivers unbeatable durability.
• Main components designed and manufactured in house made at CQL, achieve best matching.
• High Productivity
• The SEM PS bucket, utilizes a Caterpillar patented design, allowing 10% more material to be loaded into the bucket.
• Twin-pump merging hydraulic system saves energy by 5%
• Super long 3300mm wheel base and 32T axle ensures stability and 10-15% larger tipping load.
• In 2011, the SEM 650B won the Caterpillar Chairman’s Product Quality Award. The SEM 650B competed against other Caterpillar machines in this competition. The SEM 650B achieved the award, based on statistical analysis of the machines reliability and quality data.
Heavy Duty Designed Driveline Prolongs 30-50% Serve Life
n In the mines, ports, cement and other heavy applications, the SEM 650B driveline provides increased life by approximately 30-50%:
n Countershaft transmission provides double life, compared to competitive planetary transmissions in the same tough application
n Single pole three element torque converter, increases work efficiency by 10%
n SEM Heavy Duty Axles, are specially designed with 32 tons payload, 20% higher than competitive machines, who usually offers 26-26.5 ton axles.
n The Planetary Transmission has a less durable clutch design, where the overrunning clutch does not stop the load operation, resulting in early wear of the clutch discs causing the transmission to fail.
n The SEM Countershaft Transmission has more operational flexibility, with its additional speeds, to provide more efficient operation and different applications, and a maximum machine speed of 45 km/hr for traveling distances (40% higher than most planetary transmissions).
n The SEM Countershaft transmission uses world class bearings, which provide life nearly double (1.67 times) the bearings used in competitive planetary transmissions.
Cooling System – 24 Hours Continuous Operation Guarantee
n Utilizing three independent cooling radiator cores (engine, transmission and hydraulic cooling is separate), allows worry free operation in all normal conditions. The separate cooling cores provide consistent and effective cooling, in all normal conditions.
n Customers with heavy duty applications, in extreme temperatures, can choose a high ambient cooling package, which allows worry free operation in temperatures up to 50C.
n SEM optimized cooling packages, are designed to ensure coolant and oil stay within their operating temperatures, which enables the service fluid change internals to be met. These operations temperatures are 70-80C for engine coolant, transmission oil of 90-100 C.
n An expansion tank, reduces the water pumps inlet pressure, therefor increasing the water pumps life.
Frame & Structure
SEM cooling package and structural frame designed for heavy duty applications, by incorporating the following
n Rugged frame, passing detailed design analysis
n Plate & fin type high pressure resistance cooler design (increases life by 30% in heavy duty and corrosive applications)
n Temperature resistant rubber baffling, surrounding the cooling package, to ensure optimum airflow
n ISO mounting pads, to minimize structural flexing of the cooling system, to ensure prolonged life.
Hydraulic System – More Reliable
n Utilizes twin-pump merging hydraulic system, to optimize efficiency, to save on fuel consumption
n Optimized system design, pressure setting went through selection valve but not traditional pump , saving 5% of energy
n Design utilizes world class hydraulic pumps and components, to deliver reliability and durability.
n Industry leading pilot valve, implementing valve and high pressure tubes manufactured and tested by Caterpillar factory
n System incorporates pressure tap fittings, to allow fast diagnosis of any potential issue.
Work Tools, Effective and More Choice
n Product various bucket options with size from 2.7 to 4.5 cub. m
n Once the bucket is dumped, and the lift arm is lowered, the bucket returns to a ready-to-dig position (bottom of the bucket is parallel to the ground). This reduces hydraulic cycle time up to 17%
n Machines equipped with a quick coupler, can change between work tools in less than 2 minutes
Rated Load Capacity
2.7 - 4.5 m3
Overall Dimension L*W*H(mm)
Rated Gross Power
162 kW @ 2100 rpm
Full Turn Static Tipping Load
Pump Flow-Implement Pump
System Pressure Setting
Hydraulic Cycle Time
Lower(Empty, Float Down)
Steering Angle Left/Right
Minimum Turning Radius Over Rear Tire
Minimum Turning Radius Over Bucket
Fixed with Calipers
Fixed with Osc. Frame with Calipers
Maximum Single-Wheel Rise and Fall
Oscillating ± 11°
Dry & calipers , Air to oil control
Drum type shoe brake , Spring applied & air released
SEM TR200 / B-YJ375
Countershaft, Power shift
Service Refill Capacities
Engine Lubricating Oil
Oil for Converter and Gear Box
Differentials and Final Drivers
23.5 - 25
Front 400 kPa / Rear 350 kPa