SPECS / COMPARISON
Komatsu WB91R-2 vs Caterpillar 438C
A detailed comparison of the Komatsu WB91R-2 and the Caterpillar 438C. Click a model name to view its full specifications.
Horsepower
Komatsu WB91R-267.7 kW (90.8 HP)
Caterpillar 438C66.4 kW (89 HP)
Weight
Komatsu WB91R-27497.9 kg (16530 lbs)
Caterpillar 438C7561.4 kg (16670 lbs)
Operating Weight
Komatsu WB91R-27497.9 kg (16530 lbs)
Caterpillar 438C7561.4 kg (16670 lbs)
| Specification | Komatsu WB91R-2 Backhoe Loaders | Caterpillar 438C Backhoe Loaders |
|---|---|---|
| Horsepower | 67.7 kW (90.8 HP) | 66.4 kW (89 HP) |
| Weight | 7497.9 kg (16530 lbs) | 7561.4 kg (16670 lbs) |
| Transmission | Full Powershift, Electronic Gear Management | Power Shuttle |
| Pump Capacity | 165.0 LPM (43.6 GPM) | 162.0 LPM (42.8 GPM) |
| Lift Capacity | 4218.4 kg (9300 lbs) | — |
| Engine Manufacturer | Komatsu | Caterpillar |
| Engine Model | 4 D106-1FA | 3054 |
| Gross Power | 67.7 kW (90.8 HP) | 66.4 kW (89 HP) |
| Net Power | 61.5 kW (82.5 HP) | 63.4 kW (85 HP) |
| No Of Cylinders | 4 | 4 |
| Engine Type | Diesel | Diesel |
| Displacement | 4413.0 cc (269.3 cu in) | 4000.1 cc (244.1 cu in) |
| Aspiration | Naturally | Turbocharged |
| Power Measured | 2200 RPM | 2200 RPM |
| Torque Measured | 1500 RPM | — |
| Max Torque (Net ) | 104.3 kg (230 lbs) | — |
| Operating Voltage | 12 V | 12 V |
| Alternator Supplied Amperage | 60 A | 52 A |
| Fuel Capacity | 130.2 l (34.4 gal) | 128.3 l (33.9 gal) |
| Oil Capacity | 8.7 l (2.3 gal) | 7.6 l (2 gal) |
| Cooling Capacity | 18.2 l (4.8 gal) | 22.0 l (5.8 gal) |
| Hydraulic System Capacity | 92.4 l (24.4 gal) | 79.1 l (20.9 gal) |
| Transmission Oil Capacity | 16.3 l (4.3 gal) | 18.2 l (4.8 gal) |
| Front Axle Oil Capacity | 8.3 l (2.2 gal) | 7.6 l (2 gal) |
| Rear Axle Oil Capacity | 18.5 l (4.9 gal) | 24.2 l (6.4 gal) |
| Transmission Type | Full Powershift, Electronic Gear Management | Power Shuttle |
| No Of Forward Gears | 4 | 4 |
| No Of Reverse Gears | 4 | 4 |
| Max Speed (Forward) | 40.1 km/h (24.9 mph) | 31.5 km/h (19.6 mph) |
| Max Speed (Reverse) | 40.1 km/h (24.9 mph) | 31.5 km/h (19.6 mph) |
| Pump Type | Variable Displacement Axial Piston | Piston |
| Pump Flow Capacity | 165.0 LPM (43.6 GPM) | 162.0 LPM (42.8 GPM) |
| Relief Valve Pressure | 186.2 bar (2700 psi) | 206.8 bar (3000 psi) |
| Dig Depth | 457.2 cm (180 in) | 487.7 cm (192 in) |
| Dig Depth (Extended) | 548.6 cm (216 in) | 579.1 cm (228 in) |
| Bucket Dig Force | 3569.8 kg (7870 lbs) | — |
| Loading Height | 243.8 cm (96 in) | 365.8 cm (144 in) |
| Loading Height (Extended) | 365.8 cm (144 in) | 426.7 cm (168 in) |
| Reach At Load Height | 548.6 cm (216 in) | 182.9 cm (72 in) |
| Reach At Load Height (Extended) | 670.6 cm (264 in) | 243.8 cm (96 in) |
| Reach At Max Dump Height | 61.0 cm (24 in) | 91.4 cm (36 in) |
| Dump Height | 274.3 cm (108 in) | 274.3 cm (108 in) |
| Reach From Swivel (Extended) | 670.6 cm (264 in) | 670.6 cm (264 in) |
| Lift Capacity At Full Height | 4218.4 kg (9300 lbs) | — |
| Operating Weight | 7497.9 kg (16530 lbs) | 7561.4 kg (16670 lbs) |
| Bucket Capacity | 1.0 m³ (1.35 cu yds) | 1.0 m³ (1.31 cu yds) |
| Bucket Width | 231.9 cm (91.3 in) | 239.5 cm (94.3 in) |
| Bucket Breakout Force | 608058.2 kg (1340540 lbs) | 513937.9 kg (1133040 lbs) |
| Reach From Swivel | 548.6 cm (216 in) | 579.1 cm (228 in) |
| Height To Top Of Cab | 274.3 cm (108 in) | 304.8 cm (120 in) |
| Overall Height | 365.8 cm (144 in) | 365.8 cm (144 in) |
| Overall Length | 579.1 cm (228 in) | 579.1 cm (228 in) |
| Overall Width | 243.8 cm (96 in) | 243.8 cm (96 in) |
| Wheelbase | 213.4 cm (84 in) | 213.4 cm (84 in) |
| Turning Radius | 548.6 cm (216 in) | 823.0 cm (324 in) |
| Ground Clearance | 30.5 cm (12 in) | 30.5 cm (12 in) |
| Torque Rise (Net ) | — | 0.24 |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.