Bobcat T66 Track Loader Specifications

The Bobcat T66 compact track loader driveline system components: a 146.5 cu.in (2.4L) Bobcat Doosan D24 4-cylinder turbo diesel engine with a rated power of 74 hp (55.2 kW), and 1-speed or 2-speed hydrostatic transmission. The hydraulic system has a pump with a rated flow of 17.6 gpm (66.5 lpm). The system pressure is 3550 psi (245 bar). The Bobcat T66 is equipped with a vertical-lift loader boom, solid-mounted or torsion suspension undercarriage, and rubber tracks. The loader has a max lift height of 120" (3050 mm) to hinge pin and dump height of 94.3" (2395 mm). The rated operating capacity is 2450 lbs (1110 kg), and tipping load is 7000 lbs (3175 kg).

Engine Specs

Engine Model ...................... Bobcat Doosan D24
Engine Type ...................... Vertical four-cylinder direct injection liquid-cooled diesel
Number of Cylinders ...................... 4
Displacement, cu.in (L) ...................... 146.5 (2.39)
Cylinder Bore, in (mm) ...................... 3.54 (90.0)
Piston Stroke, in (mm) ...................... 3.70 (94.0)
Aspiration ...................... Turbocharged
Rated Engine Power, hp (kW) ...................... 74.0 (55.2)
Rated Engine Speed, rpm ...................... 2600
Maximum Torque, Nm (lb-ft) ...................... 280 (207)
Torque Speed, rpm ...................... 1800
Compression Ratio ...................... 17:1
Firing Order ...................... 1-3-4-2
Fuel System ...................... High-pressure common rail
Injection Pump ...................... Delphi DFP 4.4
Fuel Filter Type ...................... Full flow, cartridge
Lubricating System ...................... Pressure lubrication by gear pump
Oil Filter Type ...................... Full flow, cartridge
Fuel Tank Capacity, gal (L) ...................... 28.3 (107.1)
Oil Capacity, qts (L) ...................... 9.7 (9.2)
Coolant Capacity, qts (L) ...................... 12.0 (11.3)
Electrical System Rating, Volts ...................... 12
Charging System ...................... Alternator
Alternator Rating, Amps ...................... 90

Drive Train

Drive System Type ...................... Fully hydrostatic, rubber track drive
Transmission ...................... Tandem piston pumps and reversing motors
Number of Gears (Std) ...................... Single
Number of Gears (Opt) ...................... Two (low/high)
Brakes Type ...................... Independent wet disc
Drive Motor Oil Capacity, qts (L) ...................... 0.53 (0.50)
Travel Speed (Single), mph (km/h) ...................... 7.2 (11.6)
Travel Speed (Low Range), mph (km/h) ...................... 7.2 (11.6)
Travel Speed (High Range), mph (km/h) ...................... 10.2 (16.4)

Undercarriage

Undercarriage Type (Std) ...................... Solid-Mounted
Undercarriage Type (Opt) ...................... Torsion Suspension
Tracks Type ...................... Rubber tracks, C-Pattern
Tracks Tension ...................... Grease cylinder and spring
Track Width (Std), in (mm) ...................... 12.6 (320)
Track Width (Opt), in (mm) ...................... 15.7 (400)
Ground Pressure (12.6" Tracks, Torsion Suspension), psi (Bar) ...................... 6.3 (0.434)
Ground Pressure (15.7" Tracks, Torsion Suspension), psi (Bar) ...................... 5.1 (0.352)
Ground Pressure (12.6" Tracks, Solid-Mounted), psi (Bar) ...................... 5.9 (0.407)
Ground Pressure (15.7" Tracks, Solid-Mounted), psi (Bar) ...................... 4.8 (0.331)

Hydraulic System

Hydraulic System Type ...................... Open center
Hydraulic Pump Type ...................... Gear
Pump Capacity (Standard), gpm (Lpm) ...................... 17.6 (66.5)
Pump Capacity (High Flow), gpm (Lpm) ...................... 26.9 (101.8)
System Pressure, psi (Bar) ...................... 3550 (245)
Hydraulic Reservoir Capacity, gal (L) ...................... 5.0 (18.9)
Hydraulic System Capacity, gal (L) ...................... 9.5 (36.0)
Number of Valves ...................... 3

Loader Performance

Rated Operating Capacity (Torsion Suspension Undercarriage), lbs (kg) ...................... 2350 (1066)
Rated Operating Capacity (Solid-Mounted Undercarriage), lbs (kg) ...................... 2450 (1110)
Tipping Load (Torsion Suspension Undercarriage), lbs (kg) ...................... 6714 (3045)
Tipping Load (Solid-Mounted Undercarriage), lbs (kg) ...................... 7000 (3175)
Boom Lifting Force (Torsion Suspension Undercarriage), lbs (kg) ...................... 4650 (2109)
Boom Lifting Force (Solid-Mounted Undercarriage), lbs (kg) ...................... 4474 (2029)
Bucket Breakout Force (Torsion Suspension Undercarriage), lbs (kg) ...................... 5194 (2356)
Bucket Breakout Force (Solid-Mounted Undercarriage), lbs (kg) ...................... 5085 (2307)
Loader Boom Type ...................... Vertical-lift

Dimensions and Weight

Length (w/o Bucket), in (mm) ...................... 107 (2720)
Length (Bucket On Ground), in (mm) ...................... 134.9 (3425)
Length (Ground Contact), in (mm) ...................... 54.3 (1380)
Width (w/o Bucket), in (mm) ...................... 67 (1700)
Operating Height, in (mm) ...................... 153.9 (3910)
Height (Operator Cab), in (mm) ...................... 80.5 (2045)
Height to Hinge Pin (Fully Raised), in (mm) ...................... 120 (3050)
Dump Angle At Max Height, deg ...................... 37
Dump Height (Fully Raised), in (mm) ...................... 94.3 (2395)
Dump Reach At Max Height, in (mm) ...................... 36.7 (935)
Rollback Angle At Ground Level, deg ...................... 31
Rollback Angle At Max Height, deg ...................... 94
Departure Angle, deg ...................... 25
Bucket Width, in (mm) ...................... 68 (1725)
Ground Clearance, in (mm) ...................... 7.5 (190)
Turning Radius (w/Bucket), in (mm) ...................... 81.5 (2070)
Operating Weight (Torsion Suspension Undercarriage), lbs (kg) ...................... 9550 (4330)
Operating Weight (Solid-Mounted Undercarriage), lbs (kg) ...................... 8925 (4050)