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Kubota BX23S Backhoe Loader

The Kubota BX23S tractor loader backhoe was manufactured from 2017 to 2021. The Kubota BX23S TLB powerline includes a Kubota D902 four-stroke vertical 3-cylinder water-cooled diesel engine, and 2-range hydrostatic transmission with high-low gear shift.

A 54.8 cu.in (0.9 L) engine has a cylinder bore of 2.83" (72 mm), piston stroke of 2.9" (73.6 mm), and rated power of 23 Hp (17.2 kW). The max travel speed (forward/reverse): 8.4 mph (13.5 kph) and 6.5 mph (10.5 kph). The open center hydraulic system used a gear pump with a rated fluid flow of 6.2 gpm (23.5 lpm). The main relief pressure is 128 bar (1850 psi). The Kubota BX23S TLB is equipped with 18x8.50-10 front tires and 26x12.00-12 rear tires. The wheelbase is 55.1 in (1400 mm).

The LA340S loader has a lifting capacity (at pivot pin) of 615 lbs (280 kg) to max height of 71 in (1804 mm), and breakout force of 1285 lbs (585 kg). A full dump clearance with a 45-degree max dump angle is 50.7 in (1288 mm). The raising cycle time is 3.3 sec from ground level to full height, and bucket dumping time is 2.7 sec. The 48 in (1220 mm) standard material bucket has a nominal heaped capacity of 6.0 cu.ft (0.17 m3).

The BT603 backhoe has a maximum depth of 74.4 in (1890 mm), 2-ft flat depth of 72.5 in (1840 mm), and 8-ft flat depth of 41.7 in (1060 mm). The digging force is 1170 lbs (530 kg) using a dipperstick cylinder and 1936 lbs (880 kg) using a bucket cylinder. The reach from swing pivot at ground line is 102.8 (2612 mm). The backhoe can be fitted with 12" (305 mm) or 16" (405 mm) buckets.

Engine Model Kubota D902
Engine Type Vertical water-cooled 4-stroke diesel
Number of Cylinders 3
Cylinder Bore, in (mm) 2.83 (72.0)
Piston Stroke, in (mm) 2.90 (73.6)
Total Displacement, cu.in (L) 54.8 (0.898)
Maximum Power, hp (kw) 23.0 (17.2)
Rated Speed, rpm 3200
Idle Speed, rpm 900-3800
Aspiration Naturally aspirated
Compression Ratio 24:1
Firing Order 1-2-3
Combustion Chamber Spherical type
Direction of Rotation Counter-clockwise
Fuel Injection Pump Bosch type
Injection nozzle Bosch Throttle type
Governor Type All speed mechanical governor
Lubrication System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Oil Filter Type Full flow paper filter (cartridge)
Valve Clearance (Cold), in (mm) 0.0057-0.0073 (0.145-0.185)
Fuel Tank Capacity, gal (L) 6.6 (25.0)
Oil Capacity, qts (L) 4.0 (3.7)
Coolant Capacity, qts (L) 3.4 (3.2)
Electrical System Rating, Volts 12
Alternator Rating, Amps 40
Starting System Electric starting with starter
Starter Rating 12V, 1.2 kW

Power Take-Off
PTO Operational Type Independent
PTO Horsepower, hp (kW) 17.5 (13.0)
PTO Clutch Hydraulic
Rear PTO Speed, rpm 540
Mid PTO Speed, rpm 2500

Transmission Type Hydrostatic, high-low gear shift
Number of Forward Gears Infinite (2-range)
Number of Reverse Gears Infinite (2-range)
Oil Capacity, qts (L) 12.0 (11.3)
Maximum Forward Speed, mph (kph) 8.4 (13.5)
Maximum Reverse Speed, mph (kph) 6.5 (10.5)

Wheels and Tires
Drive Wheels 4WD 4x4
Steering Configuration Front steer
Steering System Hydrostatic power
Brakes Type Wet disc
Front Tire Size 18x8.50-10
Rear Tire Size 26x12.00-12
Front Tread, in (mm) 36.6 (920)
Rear Tread, in (mm) 32.2 (810)

Hydraulic System
Hydraulic System Type Open center
Implement Pump Type Gear
Implement Pump Flow, gpm (Lpm) 6.2 (23.5)
Hydraulic Pressure, Bar (psi) 128 (1850)
Number of Standard Remote Valves 2/2
3-Point Hitch Category 1
Draft Sensing or Lift Control Position control
Lift Capacity at 24" (610mm) ahead pin, lb (kg) 680 (310)
Lift Capacity at pin, lb (kg) 1210 (550)

Dimensions and Weight
Wheelbase, in (mm) 55.1 (1400)
Length (Tractor only), in (mm) 99 (2515)
Length (with Loader/Backhoe), in (mm) 174.8 (4440)
Height (ROPS), in (mm) 86.2 (2190)
Overall Width, in (mm) 45.1 (1145)
Ground Clearance, in (mm) 8.4 (213)
Turning Radius, in (mm) 90.5 (2300)
Weight (Tractor only), lb (kg) 1570 (712)
Weight (with Loader/Backhoe), lb (kg) 2660 (1210)

Loader Model Kubota LA340S
Maximum Lift Height to Pivot Pin, in (mm) 71 (1804)
Clearance with Bucket Dumped, in (mm) 50.7 (1288)
Reach at Maximum Lift Height, in (mm) 26.5 (677)
Maximum Dump Angle, degrees 45
Digging Depth, in (mm) 4.8 (122)
Maximum Rollback Angle, degrees 29
Lift Capacity to Full Height at Pivot Point, lbs (kg) 615 (280)
Breakout Force at Bucket Pivot Point, lbs (kg) 1285 (585)
Boom Cylinder Size (Bore/Stroke), in (mm) 1.57x12.8 (40x326)
Bucket Cylinder Size (Bore/Stroke), in (mm) 2.56x7.7 (65x196)
Bucket Width, in (mm) 48 (1220)
Loader Weight, lbs (kg) 475 (215)

Backhoe Model Kubota BT603
Maximum Digging Depth, in (mm) 74.4 (1890)
2-ft Flat Digging Depth, in (mm) 72.5 (1840)
8-ft Flat Digging Depth, in (mm) 41.7 (1060)
Overall Reach from Swing Pivot, in (mm) 102.8 (2612)
Loading Height, in (mm) 60.4 (1533)
Loading Reach, in (mm) 40 (1015)
Swing Arc, deg 140
Bucket Rotation, deg 180
Transport Height, in (mm) 67.7 (1720)
Stabilizer Spread (Operating Position), in (mm) 73.3 (1860)
Stabilizer Spread (Transport Position), in (mm) 51 (1295)
Digging Force (Bucket Cylinder), lbs (kg) 1936 (880)
Digging Force (Dipper Cylinder), lbs (kg) 1170 (530)
Bucket Widths, in (mm) 12, 16 (305, 405)
Backhoe Weight, lbs (kg) 608 (275)



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