| Manufacturer | Kubota |
| Price | 36,542(USD) |
| Model | M108S |
| Equipment Type | Row-Crop Tractors |
| Factory |
VARIANTS
| M108SH | 2WD ROPS 16-speed |
| M108SDSF | 2WD ROPS 32-speed |
| M108SHD | 4WD ROPS 16-speed |
| M108SDS | 4WD ROPS 32-speed |
| M108SHC | 2WD cab 16-speed |
| M108SHDC | 4WD cab 16-speed |
| M108SDSC | 4WD cab 32-speed |
NEBRASKA TRACTOR TEST 1944 2
| Description | Diesel 16-speed 4WD November 18 - 21, 2008 Link: Nebraska Tractor Test 1944 file PTO performance |
| Max power | 103.17hp / 76.9kW |
| Fuel use | 5.8gal/hour / 22.0l/hour |
| Power at rated engine speed | 101.74hp / 75.9kW |
| Power at rated PTO speed | 99.27hp / 74.0kW |
KUBOTA M108S POWER
| Engine (net) | 108hp / 80.5kW |
| PTO (claimed) | 96hp / 71.6kW |
| PTO (tested) | 103.17hp / 76.9kW |
ENGINE DETAIL
The Kubota M108S features a robust V3800-DT-TI engine, providing reliable performance with its turbocharged and intercooled design, which is ideal for heavy-duty applications. With a displacement of 3.8L and operating at a rated RPM of 2600, it effectively balances power and efficiency, but is subject to Tier III emission regulations, limiting its use in regions with stricter standards. Key considerations include its maintenance requirements, notably the dual dry air cleaner for enhanced durability, and oil/coolant capacities which ensure optimal engine performance and longevity.
| Description | Kubota V3800-DT-TI turbocharged intercooled diesel 4-cylinder 16-valve liquid-cooled |
| Displacement | 230ci / 3.8L |
| Emissions | Tier III |
| Emission control | EGR |
| Air cleaner | dual dry elements |
| Rated RPM | 2600 |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 11.3qts / 10.7L |
| Coolant capacity | 9.6qts / 9.1L |
KUBOTA M108S ENGINE
The Kubota M108S features a 3.8L 4-cylinder diesel engine, providing robust torque and fuel efficiency ideal for moderate heavy-duty tasks. Its compact dimensions enhance maneuverability in tight spaces, while the high horsepower rating allows for effective power delivery for implements. Potential challenges include limited horsepower for larger attachments and the need for regular maintenance to ensure optimal performance over time.
| Description | Kubota 3.8L 4-cyl diesel |
TRANSMISSIONS OVERVIEW
The Kubota M108S features a 16-speed partially synchronized transmission that can be enhanced to a 48-speed partial power shift, providing versatile gear selection for varying agricultural tasks. This allows for optimal torque management in different field conditions, improving operational efficiency. However, the complexity of a 48-speed system can lead to a steeper learning curve for operators, necessitating adequate training for effective use.
| Description | 16-speed partially synchronized 32-speed partial power shift 24-speed partially synchronized 48-speed partial power shift |
TRANSMISSION 1
The Kubota M108S tractor features a partially synchronized swing shift transmission with 16 forward and reverse gears, allowing for versatile speed control and efficient operation in various field conditions. The wet disc clutch provides smooth engagement and extended durability, while the 66.4qt oil capacity ensures efficient hydraulic system performance. This combination is ideal for tasks requiring frequent directional changes, such as loader work or maneuvering in tight spaces, but may require more operator skill to manage the synchronization effectively.
| Transmission | Swing Shift |
| Type | partially synchronized |
| Gears | 16 forward and reverse |
| Clutch | wet disc |
| Oil capacity | 66.4qts / 62.8L |
| Description | Four synchronized gears in two synchronized ranges plus additional non-synchronized high-low range. Hydraulic shuttle. |
TRANSMISSION 2
The Kubota M108S features a partial power shift transmission with a total of 32 forward and reverse gears, offering enhanced flexibility for various field conditions. The dual-speed Swing Shift Plus allows for push-button power shifting, enabling quicker response times and improved productivity, particularly in tasks requiring frequent speed adjustments. However, the additional complexity may pose maintenance challenges, necessitating a proficient understanding of the transmission system for optimal performance.
| Transmission | Swing Shift Plus Dual Speed |
| Type | partial power shift |
| Gears | 32 forward and reverse |
| Oil capacity | 66.4qts / 62.8L |
| Description | Dual Speed adds a push-button power shift at each gear in the basic Swing Shift transmission. |
TRANSMISSION 3
The Kubota M108S tractor features a partially synchronized Swing Shift transmission with 24 forward and reverse gears, providing versatility for various agricultural tasks and terrain adjustments. The inclusion of a creeper gear allows for precise low-speed maneuvering, advantageous for tasks such as tilling or planting. However, the complexity of the transmission may present a learning curve for operators unfamiliar with partial synchronization systems.
| Transmission | Swing Shift with creeper |
| Type | partially synchronized |
| Gears | 24 forward and reverse |
TRANSMISSION 4
The Kubota M108S features a Swing Shift Plus partial power shift transmission with a total of 48 forward and reverse gears, allowing for exceptional versatility in various field conditions and tasks. This extensive gearing range enables precise speed management, which is beneficial for applications requiring different operational speeds, such as tillage or transport. However, the complexity of the transmission may pose a learning curve for operators unfamiliar with advanced gear systems.
| Transmission | Swing Shift Plus with creeper |
| Type | partial power shift |
| Gears | 48 forward and reverse |
MECHANICAL
The Kubota M108S tractor features a robust 4WD system with a mechanical differential lock, allowing enhanced traction in challenging terrains. Its hydrostatic power steering ensures effortless maneuverability, especially in tight spaces, while the hydraulic wet disc brakes provide reliable stopping power under heavy loads. The wide range of transmission options (up to 48-speed partial power shift) accommodates diverse applications, making it suitable for both agricultural and utility work, though the complexity may require more operator training for efficient use.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Differential lock | mechanical rear (2WD) or front-and-rear (4WD) |
| Steering | hydrostatic power |
| Brakes | hydraulic wet disc |
| Cab | Two-post foldable ROPS. Cab with heat and air-conditioning optional. |
| Transmissions | 16-speed partially synchronized 32-speed partial power shift 24-speed partially synchronized 48-speed partial power shift |
CAPACITY
| Fuel | 46.2gal / 174.9L |
| Hydraulic system | 16.6gal / 62.8L |
| Front axle | 11.1qts / 10.5L |
HYDRAULICS
| Type | open center |
| Capacity | 16.6gal / 62.8L |
| Pressure | 2844psi / 196.1bar |
| Valves | 1 to 3 |
| Pump flow | 17.2gpm / 65.1lpm |
| Total flow | 29.3gpm / 110.9lpm |
| Steering flow | 12.1gpm / 45.8lpm |
TRACTOR HITCH
| Rear Type | II |
| Rear lift (at ends) | 5,560lbs / 2522kg |
| Rear lift (at 24 | 4,630lbs / 2100kg/7,490lbs / 3397kg (optional) |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540 (1.375)/540/1000 (optional) |
| Engine RPM | 540@2205 |
KUBOTA M108S TIRES
The Kubota M108S offers versatility in tire configurations, allowing operators to optimize performance for different agricultural tasks—2WD options promote fuel efficiency, while 4WD enhances traction on uneven terrains. Standard tire sizes, such as the 18.4-34 for the rear, provide good soil penetration and stability, which is crucial for heavier implements. Choosing the appropriate tire type can significantly influence handling, power transfer, and field productivity, particularly in varying soil conditions.
| Standard tires (ag) | Front: 10.00-16. Rear: 18.4-34 (2WD)/Front: 13.6-24. Rear: 18.4-34 (4WD) |
| Optional tires (ag) | Front: 9.5L-15. Rear: 16.9-34 (2WD)/Front: 10.00-16. Rear: 18.4R34 (2WD)/Front: 12.4-24. Rear: 18.4-30 (4WD)/Front: 12.4R24. Rear: 18.4R30 (4WD)/Front: 13.6R24. Rear: 13.6R34 (4WD)/Front: 12.4-24. Rear: 16.9-34 (4WD) |
DIMENSIONS
| Width | 90inches / 228cm (2WD)/91inches / 231cm (4WD) |
| Clearance (drawbar) | 17.1inches / 43cm |
| Front tread | 60.2 to 65.4inches / 152to 166 cm (4WD) |
| Rear tread | 68.1 to 80.1inches / 172to 203 cm (4WD) |
KUBOTA M108S WEIGHT
| 6,349lbs / 2879kg (2WD ROPS)/6,945lbs / 3150kg (2WD cab)/7,981lbs / 3620kg (4WD ROPS)/8,576lbs / 3890kg (4WD cab) |
KUBOTA M108S HEIGHT
| ROPS | 105inches / 266cm/81inches / 205cm (folded) |
| Cab | 106inches / 269cm |
DIMENSIONS & TIRES
The Kubota M108S, with a weight range of 6349 to 8576 pounds, offers stability and traction, particularly in uneven terrain or heavy implements. Its 2WD configuration with front tires of size 10.00-16 and rear tires of 18.4-34 can provide good soil contact but may struggle with traction in slippery conditions compared to 4WD models. This tractor is ideal for medium-duty agricultural tasks but may face challenges in mud or steep inclines, where enhanced maneuverability and power distribution are essential.
| Weight | 6349 to 8576 pounds |
| Front tire | 10.00-16 |
| Rear tire | 18.4-34 (2WD) |
KUBOTA LA1403 HEIGHT POSITION LOADER
| Height (to pin) | 145.7inches / 370cm |
| Clearance, dumped bucket | 112.6inches / 286cm |
| Dump reach | 23.6inches / 59cm |
| Dump angle | 52° |
| Reach at ground | 87.8inches / 223cm |
| Rollback angle | 40° |
| Lift to full height (at 500mm) | 2,976lbs / 1349kg |
| Bucket width | 72inches / 182cm/84inches / 213cm |
| Attachment style | Two-lever Quick Coupler |
| Raise time to height | 4.2 s |
| Bucket dump time | 2.4 s |
| Lowering time | 2.9 s |
| Rollback time | 2.2 s |
KUBOTA LA1403 POWER POSITION LOADER
| Height (to pin) | 132.7inches / 337cm |
| Clearance, dumped bucket | 98inches / 248cm |
| Dump reach | 38.6inches / 98cm |
| Dump angle | 63° |
| Reach at ground | 87.8inches / 223cm |
| Rollback angle | 40° |
| Lift to full height (at 500mm) | 3,086lbs / 1399kg |
| Bucket width | 72inches / 182cm/84inches / 213cm |
| Attachment style | Two-lever Quick Coupler |
| Raise time to height | 4.2 s |
| Bucket dump time | 2.4 s |
| Lowering time | 2.9 s |
| Rollback time | 2.2 s |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 45 (ROPS)/80 (cab) |
| Battery CCA | 900 |
| Battery volts | 12 |
| Battery Group | negative |