You can find a detailed comparison of the Cat 311D LRR and the Cat 312B L below. You can also click on the model names in the first row to view more specifications for each model.
Horsepower
Cat 311D LRR80 HP
Cat 312B L84 HP
Weight
Cat 311D LRR27500 lbs
Cat 312B L28010 lbs
| Specification | ![]() | ![]() |
|---|---|---|
| Weight | 27500 lbs | 28010 lbs |
| Horsepower | 80 HP | 84 HP |
| Digging Depth | 199 in. | 203 in. |
| Max Digging Depth | 199 in. | 203 in. |
| Max Loading Height | 214,8 in. | 231,6 in. |
| Max Reach Along Ground | 319,2 in. | 307,2 in. |
| Max Vertical Wall Digging Depth | 176,4 in. | 175,2 in. |
| Overall Length | 272,4 in. | 300,0 in. |
| Track Length | 1320,0 in. | 1440,0 in. |
| Max Bucket Capacity | 1,0 cu yds | 1,1 cu yds |
| Min Bucket Capacity | 0,4 cu yds | 0,5 cu yds |
| Tail Swing Radius | 69,6 in. | 84,0 in. |
| Overall Width | 102,0 in. | 98,4 in. |
| Hydraulic Pump Flow Capacity | 31 GPM | 63.5 GPM |
| Hydraulic System Capacity | 38,4 gal | 42,8 gal |
| Relief Valve Pressure | 5077 psi | 4980 psi |
| Max Travel Speed | 3.2 mph | 3.5 mph |
| Ground Pressure | 5,0 psi | 5,6 psi |
Need a broader comparison?
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You can also use our full comparison tool to compare more machines side by side.





