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Key Specs
The Cat® 844H Wheel Dozer continues the Caterpillar tradition with its power, mobility, operator comfort and blade selection that allows you to get the job done quickly and economically. The 844H is ideally suited for the rugged duties associated with mining, quarries and utilities.
| Engine Model | Cat® C27 ACERT® Cat® C27 ACERT® |
| Gross Power | 687 HP 512 kW |
| Net Power | 627 HP 468 kW |
| Bore | 5.4 in 137 mm |
| Stroke | 6 in 152 mm |
| Displacement | 1666 in³ 27.1 l |
| Cylinders | 12 12 |
| Torque Rise | 31 % 31 % |
| Net Power - SAE J1349 (JAN90) | 621 HP 463 kW |
| Net Power - EEC 80/1269 | 627 HP 468 kW |
| Net Power - ISO 9249 | 627 HP 468 kW |
| Net Power - ISO 14396 | 669 HP 499 kW |
| Net Power - DIN 70020 | 650 PS 650 PS |
| Operating Weight | 156120 lb 70815 kg |
| Converter Drive - Forward 1 | 4.4 mile/h 7 km/h |
| Converter Drive - Forward 2 | 7.6 mile/h 12.2 km/h |
| Converter Drive - Forward 3 | 13 mile/h 21 km/h |
| Converter Drive - Reverse 1 | 4.8 mile/h 7.7 km/h |
| Converter Drive - Reverse 2 | 8.4 mile/h 13.4 km/h |
| Converter Drive - Reverse 3 | 14.3 mile/h 23 km/h |
| Direct Drive - Forward 1 | 4.5 mile/h 7.2 km/h |
| Direct Drive - Forward 2 | 7.9 mile/h 12.8 km/h |
| Direct Drive - Forward 3 | 14 mile/h 22.5 km/h |
| Direct Drive - Reverse 1 | 4.9 mile/h 7.9 km/h |
| Direct Drive - Reverse 2 | 8.8 mile/h 14.1 km/h |
| Direct Drive - Reverse 3 | 15.4 mile/h 24.8 km/h |
| Number of Forward Speeds | 3 3 |
| Number of Reverse Speeds | 3 3 |
| Output at 2,040 rpm and 6900 kPa (1,000 psi) | 82 gal/min 311 l/min |
| Cylinder, Double Acting - Tilt and Tip, Bore and Stroke | 209.5 mm × 188 mm (8.25 in × 7.5 in) 209.5 mm × 188 mm (8.25 in × 7.5 in) |
| Relief Valve Setting - Bulldozer (Large Pump) | 2700 psi 18650 kPa |
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 2920 psi 20150 kPa |
| Relief Valve Setting | 4500 psi 31000 kPa |
| Steering Angle - Each Direction | 35 ° 35 ° |
| Minimum Turning Radius - Over Bucket | 407 in 10337 mm |
| Hydraulic Output at 2,128 rpm and 6900 kPa (1,000 psi) | 108 gal/min 410 l/min |
| Minimum Turning Radius - Over Bucket - HL | 424 in 10757 mm |
| Fuel Tank - Standard | 268.4 gal (US) 1016 l |
| Cooling System | 39.6 gal (US) 150 l |
| Crankcase | 25 gal (US) 95 l |
| Transmission | 29 gal (US) 110 l |
| Hydraulic Tank | 189.4 gal (US) 717 l |
| Differential - Final Drives - Front | 71.6 gal (US) 271 l |
| Differential - Final Drives - Rear | 68.9 gal (US) 261 l |
| Hydraulic System - Implement and Brakes - Tank Only | 52 gal (US) 197 l |
| Hydraulic System - Steering and Engine Cooling Fan - Tank Only | 34.9 gal (US) 132 l |
| Cab - ROPS/FOPS | Meets SAE and ISO standards Meets SAE and ISO standards |
| Brakes | Meets SAE/ISO 3450 1996 Meets SAE/ISO 3450 1996 |
| Front | Fixed Fixed |
| Rear | Oscillating ±11° Oscillating ±11° |
| Maximum Single-Wheel Rise and Fall | 22.5 in 572 mm |
| Operating Weight | 156120 lb 70815 kg |
| Blade Capacities | 16.1 m3-30.7 m3 (21.1 yd3-40.2 yd3) 16.1 m3-30.7 m3 (21.1 yd3-40.2 yd3) |
| Sound Performance | Meets ANSI, SAE and ISO standards Meets ANSI, SAE and ISO standards |
Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.
Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.
Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.
VisionLink® is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.
Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.
VisionLink® is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
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