SEM^™ 824F

Key Information

Category Track-type tractors

Operating Weight 23,730 kg

Ground pressure 63kPa

Ground Clearance 400 mm

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Overview
Specifications
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Key Features

Overview

The SEM 824F is a track-type tractor designed for dozing, grading, stockpiling, material spreading and ripping. It is intended for general and heavy construction, road construction, mining, coal handling, waste handling and forestry applications.

Powered by a Weichai WD12 T2 engine delivering up to 185 kW / 248 hp and equipped with an electronically controlled hydrostatic transmission system, the 824F combines power, maneuverability and productivity. Its range of track shoe widths, multiple blade configurations and rear equipment options allow it to adapt to demanding working environments.

Proven Performance

The fully hydrostatic transmission helps boost productivity. Counter-rotation, power turn and infinitely variable speed improve maneuverability and efficiency. The hydraulic demand fan is standard for better efficiency. Optimized center-of-gravity distribution improves balance and stability. The robust and more powerful mechanical engine delivers superior durability and excellent fuel efficiency.

Comfortable Operation

The spacious cab with easy-to-operate controls improves operator comfort. The stylish new F Series design, six-way adjustable seat, exceptional visibility and 8-inch LCD display allow the operator to easily view machine status and settings.

Exceptional Reliability

World-class original pumps and motors, blades made from high-tensile-strength steel with strong box-section design and structures analyzed using Finite Element Analysis all contribute to machine reliability. The final drive with double-stage reduction and wet-type brake, together with the modular cooling system designed to withstand ambient temperatures from -40°C to +50°C, further enhance durability in demanding environments.

Enhanced Reliability

The dual-path hydrostatic drive system, using electronic control technology from a world-class supplier, delivers industry-leading reliability. The Weichai mechanical engine of the 824F, with 6% increased power, provides durability and dependability. The final drive combines double-stage reduction, spur gears and a planetary structure to improve transmission efficiency and service life. Machine structures are analyzed using FEA and OMSA to identify and reinforce high-stress areas. The equalizer bar, pivot shaft, one-piece track roller frame, segmented spring recoil system and wet multi-disc brakes contribute to reliability and braking performance.

Outstanding Versatility and Productivity

Compared with powershift machines, Caterpillar’s proven hydrostatic transmission load-sensing system improves productivity. Infinitely variable speed, counter-rotation and power turn functions ensure smooth and efficient operation. The pilot-controlled implement hydraulic system improves operator comfort and precise control. The modular single-plane cooling system can operate in extreme ambient temperatures from -40°C to +50°C while contributing to fuel efficiency. The hydraulic demand fan, standard with reverse function, can improve efficiency by up to 10% and support efficient cleaning of the engine and cooling system. Machine center-of-gravity optimization further improves stability.

Lower Operation Cost

The integrated hydrostatic oil tank and hydraulic oil tank allow longer maintenance intervals and reduced maintenance costs. The Electric Pressure Override, EPOR, function prevents high-pressure overflow and reduces heat load.

Enhanced Operating Comfort

The spacious cabin and fabric-covered seat provide a welcoming working environment with excellent comfort and visibility. The single multifunction joystick ensures precise performance and maneuverability. The brand-new F Series design brings a modern appearance, while the 8-inch LCD main display makes machine settings and features easy to view. Exceptional visibility improves on-site awareness. LED lights are standard for improved night-time operation.

Leading in Class Serviceability

Maintenance-free, lifetime-lubricated idlers, track rollers and carrier rollers simplify servicing. The implement distribution valve, equipped with a pressure testing port, is installed outside the hydraulic oil tank for easier access and reduced maintenance time. The standard diagnostic display, covering both the engine and hydrostatic system, allows quick troubleshooting. Product Link is standard for convenient fleet management.

Product Specifications for 824F

Model824F824F WH824F FR
Main Specifications
- Operating Weight23,730 kg28,350 kg25,480 / 28,365 / 28,440 kg
- Ground Pressure63 kPa39 kPa67 / 63 / 63 kPa
- Ground Clearance400 mm
- Max. Slope30°
Engine
- Engine ModelWD12G250E202
- Gross Power (ISO 14396)185 kW / 248 hp
- Rated Speed2,100 r/min
Powertrain
- TypeDual-path, closed-loop electronically controlled hydrostatic drive system
- Travel Speed F/RInfinitely variable speeds 0-10 km/h
- Steering & BrakeHydrostatic steering; wet, multi-disc brake, Belleville spring actuated and hydraulically released
Blades
- Blade TypeSU/SS-WHSU-FR/S/A
- Blade Capacity (ISO 9246)6.4 / 5.8 m³12.7 m³8.6 / 5.8 / 3.9 m³
- Blade Width with End Bit3,605 / 3,700 mm4,400 mm3,605 / 3,700 / 4,365 mm
- Blade Height1,510 mm1,945 mm1,830 / 1,510 / 1,105 mm
- Max. Blade Lift Ground Clearance1,140 mm1,165 mm1,140 / 1,140 / 1,175 mm
- Max. Blade Digging Depth570 mm665 mm570 / 570 / 550 mm
- Blade Tilt Height (Middle Hole)520 / 540 mm640 mm520 / 540 mm
- Blade Weight without Push Arm1,760 / 1,645 kg2,300 kg1,870 / 1,645 / 1,307 kg
- Minimum Turning Radius4,215 mm4,300 mm4,215 / 4,075 mm
Undercarriage
- Track Shoe Width560 mm910 mm / 915 mm560 mm / 660 mm
- Track Shoe Quantity, each side404540
- Track Roller Quantity, each side787
- Carrier Roller Quantity, each side2
Hydraulic System
- TypeGear pump, pilot control
- Implement Hydraulic System Pressure19 MPa
Multi Shank Ripper
- TypeParallelogram/Parallelogram
- Maximum Penetration (Top Hole)860 mm/860 mm
- Maximum Clearance Under Tip (Bottom Hole)640 mm/640 mm
- Weight2,445 kg/2,445 kg
Single Shank Ripper
- TypeParallelogram/Parallelogram
- Maximum Penetration (Top Hole)737 mm/737 mm
- Maximum Clearance Under Tip (Bottom Hole)742 mm/742 mm
- Weight2,320 kg/2,320 kg