Verified model comparison
Compare the pushing task and blade package before treating machine size as an advantage.
Record the installed blade type, width, capacity and wear condition. The 834 and 844 records describe specific blade packages; changing from straight to another geometry changes both the work and the machine envelope. Estimate material movement with the actual blade and travel distance, not a generic model-family capacity.
Wheel dozers need room for repeated approach, push and return movements. Verify tire dimensions, access width and the highest configured point before planning transport or workshop entry. The 834 reference distinguishes its highest exhaust point from cab height; those fields cannot be substituted for each other.
Inspect blade pivots and cutting edges, articulation, wheel ends, tires and cooling-system condition. Review the previous material and duty cycle, then ask for a controlled demonstration appropriate to the machine. Compare tire and blade refurbishment costs explicitly rather than assuming the larger machine is more economical.
Generation/configuration-aware: measurement basis and reference configuration travel with each value. A difference in basis is not treated as a performance difference.
| Specification | Caterpillar 834 Wheel Dozer | Caterpillar 844 Wheel Dozer |
|---|---|---|
| Length of Straight Blade on Ground | 32 ft 7.2 in9,927 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 36 ft 6 in11,120 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Straight blade — Overall Width | 16 ft 7.8 in5,074 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 17 ft 9.3 in5,418 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Height to Top of Exhaust Stack | 15 ft 10.8 in4,835 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 17 ft 2.4 in5,240 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Straight blade — Overall Width | 16 ft 7.8 in5,074 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 17 ft 9.3 in5,418 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Straight blade — Height | 5 ft 0.5 in1,537 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 6 ft 7.7 in2,024 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Ground Clearance | 1 ft 8.4 in531 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 2 ft596 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Wheelbase | 14 ft 10.8 in4,550 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 15 ft 1.2 in4,600 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Straight blade — Ground Clearance | 4 ft 4.1 in1,324 mm834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 4 ft 9.4 in1,459 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Straight blade — Total Operating Weight | 104,069 lb47,206 kg834 with straight blade on ground; enclosed cab; standard dimension drawing. Exhaust stack is the highest published machine point. Tire substitution requires a fresh dimension check. | 165,089 lb74,883 kg844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
| Semi-U blade — Digging Depth | Not published in this research record | 1 ft 6.3 in465 mm844 with standard Semi-U blade on ground and ROPS cab; manufacturer dimension drawing. Heavy-duty Semi-U and coal blades are different configurations; tire package must be confirmed on the actual machine. |
The 834 is a purpose-built wheel dozer. This reference follows the straight-blade arrangement so blade width, overall length and operating weight describe the same pushing configuration.
ExploreThe 844 reference uses the standard Semi-U blade. Its blade width and ROPS height are central to access planning; coal and heavy-duty blade options must be assessed separately.
ExploreCarry utilization, fuel, wear, attachments and transport into an editable planning model.
ExploreNo winner is declared. Job fit depends on configuration, condition, dealer support, attachments, transport and cost assumptions beyond these published figures.