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Caterpillar 446B Backhoe Loader

Caterpillar 446B Engine

Engine Model ............... Caterpillar 3114 DIT
Engine Type ............... 4-cylinder, liquid-cooled turbocharged diesel
Number of Cylinders ............... Four, In-Line
Displacement, cu in (L) ............... 268 (4.40)
Engine Bore, in (mm) ............... 4.13 (105.0)
Engine Stroke, in (mm) ............... 5.00 (127.0)
Aspiration ............... Turbocharged
Maximum Engine Power, hp (kW) ............... 110.0 (82.0)
Rated Engine Power, hp (kW) ............... 102.0 (76.0)
Rated Engine Speed, rpm ............... 2200
Compression ............... 15.5:1
Fuel System ............... Direct Injection
Rotation ............... Counterclockwise
Air Cleaner ............... Dry-type
Fuel Tank Capacity, gal (L) ............... 33.0 (125.0)
Oil Capacity, qts (L) ............... 11.7 (11.0)
Coolant Capacity, qts (L) ............... 32.0 (30.0)
Electrical System Rating, Volts ............... 12
Alternator Rating, Amp ............... 90

Transmission Configuration

Transmission Type ............... Power Shift
Gearbox Type ............... 4F/4R, Constant mesh
Number of Forward Gears ............... 4
Number of Reverse Gears ............... 4
Torque Converter ............... Single-stage
Torque Converter Ratio ............... 2.09:1
Oil Capacity, qts (L) ............... 27.5 (26.0)
Maximum Forward Speed, mph (kph) ............... 20.5 (33.0)
Maximum Reverse Speed, mph (kph) ............... 22.7 (36.5)
Service Brakes ............... Fully enclosed, hydraulic, multiple discs
Parking Brake ............... Mechanical, independent

Cat 446B Hydraulic System

Hydraulic System Type ............... Load-sensing, closed center
Hydraulic Pump Type ............... Variable displacement, axial piston
Hydraulic Pump Flow, gpm (Lpm) ............... 47.0 (178.0)
Hydraulic Pressure, Bar (psi) ............... 224 (3250)
Hydraulic System Capacity, gal (L) ............... 41.0 (154.0)
Valves Type ............... Pressure-compensated

Wheels and Tires

Drive Wheels ............... 2WD/4WD
Steering Configuration ............... Front Steer
Steering System ............... Hydrostatic
Front Tire Size (2WD) ............... 14.5/75-16, 10PR, F3
Rear Tire Size (2WD) ............... 21L-24, 12PR, R4
Front Tire Size (4WD) ............... 12.5-20, 10PR, R4
Rear Tire Size (4WD) ............... 21L-24, 12PR, R4
Front Tread, in (mm) ............... 77.9 (1970)
Rear Tread, in (mm) ............... 71.1 (1800)

Dimensions and Weight

Wheelbase ............... 88.3 in (2233 mm)
Transport Length ............... 26 ft 1 in (7954 mm)
Overall Length, (Loader on ground) ............... 26 ft (7922 mm)
Transport Height ............... 13 ft 9 in (4193 mm)
Height (Cab) ............... 113.2 (2864 mm)
Height (Exhaust) ............... 117 (2960 mm)
Overall Width ............... 96.2 in (2434 mm)
Ground Clearance ............... 13.1 (332 mm)
Turning Radius ............... 18 ft 7 in (5680 mm)
Weight ............... 19600 lbs (8890 kg)

Cat 446B Loader Specifications

Dimensions and Performance Data

Bucket Hinge Pin, Maximum Height ............... 11 ft 5 in (3490 mm)
Dump Angle at Full Height ............... 45 degrees
Dump Clearance at 45 deg ............... 106.7 in (2699 mm)
Dump Reach at 45 deg ............... 34.3 in (868 mm)
Maximum Bucket Rollback at Ground Level ............... 40 degrees
Digging Depth ............... 6.4 in (162 mm)
Maximum Grading Angle ............... 115 degrees
Maximum Operating Height ............... 14 ft 3 in (4410 mm)
Lift Capacity at Maximum Height ............... 8760 lbs (3970 kg)
Breakout Force ............... 12600 lbs (5730 kg)
Loader Weight ............... 1217 lbs (553 kg)

Loader Buckets

Width, in (mm) ............... 96 (2430)
Height, in (mm) ............... 35 (885)
Length, in (mm) ............... 37 (936)
Capacity (Struck), cu.ft (m3) ............... 32.0 (0.92)
Capacity (Heaped), cu.ft (m3) ............... 38.5 (1.10)
Weight, lb (kg) ............... 960 (436)

Width, in (mm) ............... 96 (2430)
Height, in (mm) ............... 38.6 (977)
Length, in (mm) ............... 38.3 (970)
Capacity (Struck), cu.ft (m3) ............... 36.4 (1.04)
Capacity (Heaped), cu.ft (m3) ............... 45.5 (1.30)
Weight, lb (kg) ............... 1240 (563)

Cat 446B Backhoe Specifications

Dimensions and Performance Data (Standard Stick)

Maximum Digging Depth ............... 17 ft 2 in (5219 mm)
Digging Depth, 2 ft (610 mm) Flat Bottom ............... 17 ft (5173 mm)
Overall Operating Height at Full Lift ............... 20 ft 9 in (6335 mm)
Loading Height ............... 14 ft 2 in (4310 mm)
Reach From Swing Pivot at Ground Line ............... 21 ft 8 in (6604 mm)
Loading Reach ............... 6 ft 8 in (2027 mm)
Swing Arc ............... 180 degrees
Bucket Rotation (Vertical Wall Position) ............... 169 degrees
Bucket Rotation (Truck Loading Position) ............... 169 degrees
Stabilizer Spread (Operating Position) ............... 13 ft 5 in (4084 mm)
Stabilizer Spread (Transport Position) ............... 7 ft 11 in (2405 mm)
Digging Force (Bucket Cylinder) ............... 15200 lbs (6910 kg)
Digging Force (Crowd Cylinder) ............... 10800 lbs (4910 kg)

Dimensions and Performance Data (Extendable Stick)

Maximum Digging Depth ............... 21 ft 5 in (6528 mm)
Digging Depth, 2 ft (610 mm) Flat Bottom ............... 21 ft 3 in (6479 mm)
Overall Operating Height at Full Lift ............... 23 ft 9 in (7240 mm)
Loading Height ............... 16 ft 1 in (4894 mm)
Reach From Swing Pivot at Ground Line ............... 25 ft 9 in (7868 mm)
Loading Reach ............... 10 ft 8 in (3261 mm)
Swing Arc ............... 180 degrees
Bucket Rotation (Vertical Wall Position) ............... 163 degrees
Bucket Rotation (Truck Loading Position) ............... 163 degrees
Stabilizer Spread (Operating Position) ............... 13 ft 5 in (4084 mm)
Stabilizer Spread (Transport Position) ............... 7 ft 11 in (2405 mm)
Digging Force (Bucket Cylinder) ............... 15150 lbs (6890 kg)
Digging Force (Crowd Cylinder) ............... 7830 lbs (3560 kg)

Heavy Duty Buckets

Width, in (mm) ............... 18 (457)
Struck Capacity, cu.ft (m3) ............... 5.9 (0.17)
Heaped Capacity, cu.ft (m3) ............... 6.5 (0.19)
Number of Teeth ............... 3
Weight, lb (kg) ............... 392 (178)

Width, in (mm) ............... 24 (610)
Struck Capacity, cu.ft (m3) ............... 8.4 (0.24)
Heaped Capacity, cu.ft (m3) ............... 10.0 (0.28)
Number of Teeth ............... 4
Weight, lb (kg) ............... 476 (216)

Width, in (mm) ............... 30 (762)
Struck Capacity, cu.ft (m3) ............... 10.5 (0.30)
Heaped Capacity, cu.ft (m3) ............... 13.0 (0.38)
Number of Teeth ............... 5
Weight, lb (kg) ............... 523 (237)

Width, in (mm) ............... 36 (914)
Struck Capacity, cu.ft (m3) ............... 13.0 (0.38)
Heaped Capacity, cu.ft (m3) ............... 17.0 (0.48)
Number of Teeth ............... 6
Weight, lb (kg) ............... 589 (267)

Extreme Service Buckets

Width, in (mm) ............... 24 (600)
Struck Capacity, cu.ft (m3) ............... 8.1 (0.23)
Heaped Capacity, cu.ft (m3) ............... 9.0 (0.27)
Number of Teeth ............... 4
Weight, lb (kg) ............... 501 (227)

Width, in (mm) ............... 30 (760)
Struck Capacity, cu.ft (m3) ............... 10.0 (0.29)
Heaped Capacity, cu.ft (m3) ............... 13.0 (0.37)
Number of Teeth ............... 5
Weight, lb (kg) ............... 550 (250)