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Kubota M8-181 Specs ( 2020-Present )

Name: Kubota M8-181
Brand: Kubota

Overview

The Kubota M8-181 is a row-crop tractor produced from 2020 to the present and manufactured by Versatile in Winnipeg, Canada. It is powered by a Cummins 6.7L 6-cylinder liquid-cooled diesel engine rated at 180 hp and is equipped with a closed-center load sensing hydraulic system and standard four-wheel drive.

Ideal Applications

Mechanical Configuration: The M8-181 utilizes a 114-inch wheelbase and is available with either a 30-speed six-speed power shift transmission or a continuously-variable transmission.

Tested Performance Metrics: Nebraska Tractor Test data recorded a maximum tested PTO power of 169.73 hp and a maximum drawbar pull of 11,488 lbs.

Lifting and Hydraulic Capacity: This model features a Category III/IIIN rear hitch with a 12,478 lb lift capacity at 24 inches, supported by a 31.7 gpm main pump flow.

Production

Description	Row-Crop tractor / Built in Winnigpeg, Manitoba, Canada
Distributor	Kubota
Manufacturer	Versatile

Engine

Engine type	Cummins 6.7L 6-cyl diesel
Exhaust fluid (DEF)	9 gal (34.1 L)
Fuel tank	99 gal (374.7 L)
Bore/Stroke	4.21x4.88 inches (107 x 124 mm)
Description	Cummins B6.7 / diesel / 6-cylinder / liquid-cooled
Displacement	408.3 ci (6.7 L)
Emissions	Tier 4
Power	180 hp (134.2 kW)
Rated RPM	2100
Starter	electric
Starter volts	12
Drawbar (tested)	158.26 hp (118.0 kW)
PTO (claimed)	145 hp (108.1 kW)
PTO (tested)	169.73 hp (126.6 kW)

Transmission

Gears	30 forward and 15 reverse / infinite forward and reverse
Type	six-speed power shift / continuously-variable transmission
Description	continuously-variable transmission
Transmission type	30-speed six-speed power shift
Description	continuously-variable transmission
Transmission type	30-speed six-speed power shift

Mechanical

Cab	Cab standard with air-conditioning.
Description	Power steering
Drive type	Four-wheel drive
Trailer brakes	hydraulic OptOptional

Hydraulics

Pump flow	31.7 gpm (120.0 lpm)
Rear valves	3 to 5
SCV flow	31.7 gpm (120.0 lpm)
Steering flow	11.1 gpm (42.0 lpm)
Type	closed-center load sensing

Hitch

Front Hitch	IIIN
Front lift	8818 lbs (3999 kg)
Rear lift (at 24"/610mm)	12478 lbs (5660 kg)
Rear Type	III/IIIN

PTO

Clutch	electro-hydraulic
Front PTO Type	1000 (1.375)
Rear PTO	independent
Rear PTO Type	540/1000 (1.375)

Electrical

Battery volts	12
Ground	negative

Dimensions & Tires

Bar rear axle	4.13 by 98 inches (104 by 2489 mm) / 4.13 by 118 inches (104 by 2997 mm)
Height	128 inches (325 cm)
Shipping weight	19510 lbs (8849 kg)
Wheelbase	114 inches (289 cm)
Weight	19510 lbs (8849 kg)
Wheelbase	114 inches (289 cm)

Kubota M8-181 attachments

Description	front-end loader

OCED Tractor Test 2217

Description	Diesel 30-speed 4WDJune 22 - 25, 2020Link: OCED Tractor Test 2217 file / PTO performance / Drawbar performance
Fuel use	9.5 gal/hour (36.0 l/hour) / 9.7 gal/hour (36.7 l/hour) / 9.6 gal/hour (36.3 l/hour) / 9.9 gal/hour (37.5 l/hour)
Max power	169.73 hp (126.6 kW) / 158.26 hp (118.0 kW)
Max pull	21975 lbs (9967 kg)
Power at rated engine speed	163.60 hp (122.0 kW)
Power at rated PTO speed	167.00 hp (124.5 kW)

References

Description	M8 Built Right. Built Ready. published in 2021, by Kubota

Nebraska Tractor Test Results

Test #2217

Download PDF

Test Date: June 22 - 25, 2020

Location: Nebraska Tractor Test Laboratory, University of Nebraska, Lincoln, Nebraska 68583-0832

This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.

PTO Drawbar Hydraulics Technical Sound Tires & Weight

Maximum Power & Fuel Consumption

Max Power (1 Hour)

169.73 hp

@ N/A rpm

Rated Engine Speed

163.60 hp

N/A lb/hp·hr

Standard PTO Speed

167.00 hp

@ N/A rpm PTO

Torque Statistics

Maximum Torque	560 lb-ft (759 Nm)
Torque Rise	36.9%
At Engine RPM	1400 rpm

PTO Power Curve

Maximum Power & Fuel Consumption Details

Condition	HP	kW	Fuel gal/hr	DEF gal/hr
Maximum Power (1 Hour)	169.73	126.56	9.54	0.91

Varying Power & Fuel Consumption

Click column headers to sort

Power	RPM	gal/hr	lb/hp·hr	hp·hr/gal	DEF gal/hr
163.60	2101	9.71	0.42	N/A	0.87
142.62	2161	8.90	0.44	N/A	0.66
108.33	2193	7.46	0.48	N/A	0.41
73.27	2210	5.67	0.55	N/A	0.31
37.11	2238	4.13	0.78	N/A	0.22
1.34	2258	2.60	13.56	N/A	0.15

Fuel Consumption Characteristics

Click column headers to sort

Condition	Power	Pull (lbs)	Speed	Slip	DEF lb/hp	Air °F	Cool °F
Power at Rated Engine Speed —10th (C1) G...	158.26	11,488	5.17	3.60	0.05	67	187
75% of Pull at Rated Engine Speed—10th (...	123.50	8,610	5.38	3.00	0.05	77	184
50% of Pull at Rated Engine Speed—10th (...	84.23	5,756	5.49	2.10	0.05	77	182
75% of Pull at Reduced Engine Speed—14th...	123.24	8,593	5.38	3.10	0.05	77	194
50% of Pull at Reduced Engine Speed—14th...	84.46	5,773	5.49	2.00	0.05	78	189

Unballasted Front Drive Engaged 2100 Engine RPM Maximum Power In Selected Gears

Click column headers to sort

Gear	Power	Speed	RPM	Slip	hp·hr/gal	lb/hp·hr	DEF lb/hp	Barom	Pull Lbs	Temp Air	Temp Cool
1st(A1)	105.58	1.80	2181	12.90	13.44	0.52	0.05	28.68	21975	71	184
2nd(A2)	122.01	2.20	2170	10.20	14.23	0.49	0.05	28.68	20836	71	184
3rd(A3)	140.15	2.61	2158	8.60	14.96	0.47	0.05	28.69	20155	73	185
4th(A4)	155.91	3.02	2102	7.60	15.48	0.45	0.05	28.69	19375	73	187
5th(B1)	157.49	3.34	2100	6.20	15.69	0.45	0.05	28.68	17700	75	188
6th(A5)	155.40	3.65	2100	5.10	15.51	0.45	0.05	28.74	15952	71	187
7th(B2)	157.46	3.99	2100	4.70	15.72	0.45	0.06	28.73	14804	72	188
8th(A6)	153.43	4.35	2100	4.10	15.40	0.45	0.06	28.74	13212	63	189
9th(B3)	158.51	4.76	2100	3.90	15.97	0.44	0.05	28.74	12497	65	187
10th(C1)	158.26	5.17	2100	3.60	15.94	0.44	0.05	28.74	11488	67	187
11th(B4)	157.81	5.63	2100	3.20	15.69	0.45	0.06	28.77	10508	74	188
12th(C2)	155.99	6.12	2100	2.90	15.45	0.45	0.06	28.78	9564	73	189
13th(B5)	151.41	6.69	2100	2.70	15.07	0.46	0.06	28.77	8483	74	189
14th(C3)	155.95	7.25	2100	2.50	15.51	0.45	0.06	28.78	8065	72	190
15th(B6)	147.98	7.91	2100	2.30	14.77	0.47	0.06	28.77	7013	74	191
16th(C4)	151.70	8.57	2100	2.20	15.07	0.46	0.06	28.77	6638	75	192

Unballasted Front Drive Engaged 2000 Engine RPM Maximum Power In Selected Gears

Click column headers to sort

Gear	Power	Speed	RPM	Slip	hp·hr/gal	lb/hp·hr	DEF lb/hp	Barom	Pull Lbs	Temp Air	Temp Cool
1st(A1)	105.01	1.79	2181	13.20	13.37	0.52	0.05	28.68	21951	70	184
2nd(A2)	121.99	2.20	2170	10.40	14.22	0.49	0.05	28.68	20828	71	184
3rd(A3)	140.09	2.61	2158	8.70	14.93	0.47	0.05	28.68	20155	72	185
4th(A4)	157.06	2.95	2073	8.40	15.44	0.45	0.06	28.68	19992	75	188
5th(B1)	164.67	3.16	2024	8.10	15.80	0.44	0.06	28.68	19581	76	191
6th(A5)	168.32	3.43	2000	6.50	15.90	0.44	0.06	28.74	18401	71	189
7th(B2)	171.23	3.76	2000	5.70	16.24	0.43	0.06	28.73	17088	73	190
8th(A6)	169.70	4.12	2000	4.80	16.12	0.43	0.06	28.74	15459	64	189
9th(B3)	175.30	4.50	2000	4.50	16.58	0.42	0.06	28.74	14608	66	189
10th(C1)	175.19	4.89	2000	4.20	16.59	0.42	0.06	28.74	13431	68	190
11th(B4)	172.34	5.34	2000	3.90	16.29	0.43	0.06	28.77	12106	74	190
12th(C2)	170.88	5.80	2000	3.30	16.16	0.43	0.06	28.78	11046	73	192
13th(B5)	167.26	6.35	2000	3.00	15.89	0.44	0.06	28.77	9874	74	192
14th(C3)	171.17	6.88	2000	2.90	16.22	0.43	0.06	28.78	9328	72	193
15th(B6)	163.34	7.52	2000	2.60	15.56	0.45	0.06	28.77	8150	75	194
16th(C4)	167.59	8.14	2000	2.40	15.91	0.44	0.06	28.77	7721	75	194

Lugging Ability In 14th C3 Gear

Click column headers to sort

Power	Speed	RPM	Slip	Increase In Pull Percent	Pull Kn	Pull Lbs
154.11	7.25	2099	2.50	0	35.45	7970
170.98	6.88	2000	2.80	17	41.43	9314
166.27	6.54	1901	2.90	20	42.43	9538
164.57	6.18	1799	3.00	25	44.41	9983
153.63	5.49	1600	3.20	32	46.69	10496
135.96	4.80	1400	3.30	33	47.24	10621
112.58	4.11	1199	3.10	29	45.65	10262
97.53	3.78	1100	3.00	21	43.03	9674

Category: 3 Quick Attach: None

Three Outlet Sets Combined

Sustained Pressure	2,757 psi
Flow Rate (min press)	N/A gpm
Max Power	68.40 hp

Single Outlet Set

Sustained Pressure	2,536 psi
Flow Rate (min press)	32.20 gpm
Max Power	47.40 hp

Engine

Make	Cummins Diesel
Type	six cylinder vertical with turbocharger, air to air intercooler and D.E.F. (diesel exhaust fluid) exhaust treatment
Displacement	408 cu in (6690 ml)
Compression Ratio	17.3 to 1
Rated Engine Speed	2100 rpm
Air Cleaner	two paper elements and aspirator
Exhaust	DOC (diesel oxidation catalyst), SCR (selective catalyst reduction) and regenerative DPF (diesel particulate filter) integrated within a vertical muffler
Crankshaft	lengthwise

Chassis

Type	front wheel assist with duals
Steering	hydrostatic
Transmission	selective gear fixed ratio with partial (6) range operator controlled power shift
Speeds	30 forward (24.86 mph max)
Wheelbase	114.00 in (2896 mm)
Front Tread Width	61.0 (1550 mm) to 88.0 (2235 mm) in
Rear Tread Width	61.0 (1550 mm) to 128.0 (3250 mm) in
Brakes	wet multiple disc hydraulically operated by two foot pedals
Hydraulic Control	direct engine drive
Unladen Tractor Mass	21,915 lbs ( 9,940 kg )

Consumables

Fuel	No. 2 Diesel
DEF Fluid	32% aqueous urea solution
Engine Oil	SAE 15W40 API service classification CK-4

Sound Levels

Bystander	79.00 dB(A)
Disengaged Fwa 8th A6 Gear	70.90 dB(A)
Engaged Fwa 8th A6 Gear	73.90 dB(A)

Tires & Tracks

Rear Tires	Four 480/80R46; ***; 10(70) psi(kPa)
Front Tires	Two 380/85R34; ***; 17(115) psi(kPa)
Height of Drawbar	20.00 in (510 mm)

Static Weight

Rear	13,995 lbs
Front	8,095 lbs
Total	22,090 lbs

Kubota M8-181 Specs ( 2020-Present )

Overview

Ideal Applications

Production

Engine

Transmission

Mechanical

Hydraulics

Hitch

PTO

Electrical

Dimensions & Tires

Kubota M8-181 attachments

OCED Tractor Test 2217

References

Nebraska Tractor Test Results

PTO Performance

Maximum Power & Fuel Consumption

Torque Statistics

PTO Power Curve

Maximum Power & Fuel Consumption Details

Varying Power & Fuel Consumption

Drawbar Performance

Fuel Consumption Characteristics

Unballasted Front Drive Engaged 2100 Engine RPM Maximum Power In Selected Gears

Unballasted Front Drive Engaged 2000 Engine RPM Maximum Power In Selected Gears

Lugging Ability In 14th C3 Gear

Hydraulic Performance

Three Outlet Sets Combined

Single Outlet Set

Technical Specifications

Engine

Chassis

Consumables

Sound Levels

Sound Levels

Tires & Weight

Tires & Tracks

Static Weight

Test Remarks