New Holland TN55

Last Updated: July 2024

Overview

The New Holland TN55 is a utility tractor powered by a 3-cylinder, liquid-cooled, naturally aspirated New Holland Diesel engine with a displacement of 179 cubic inches. It produces a maximum power output of 43 horsepower at 2300 rpm and a peak torque of 136.3 lb-ft at 1099 rpm. The engine features a coolant heat exchanger for crankcase oil cooling. The tractor has an 8-speed selective gear transmission with 8 forward and 8 reverse gears. It can be configured as a 4x2 2WD or 4x4 MFWD with power steering. With ballast, the rear tires are 14.9R28 at 23 psi, and the front tires are 7.50-16 at 54 psi. The operating weight with ballast is 7660 lbs. Independent test results provide detailed performance metrics, including fuel consumption, drawbar performance, hydraulic capabilities, PTO speeds at specific engine RPMs, and sound levels.

Key Specifications

Category: Utility

Power Output: 43

Transmission: 8-speed selective gear transmission

Operating Weight: 7660 (with ballast)

Fuel Type: Diesel

New Holland TN55 vs. Similar Tractors

Power Output

Average

Greater than 51% of similar tractors.

Operating Weight

Above Average

Greater than 87% of similar tractors.

Technical Specifications

Engine

Manufacturer: New Holland Diesel
Model: Serial No. 529-481556
Cooling Type: Liquid-cooled with engine coolant heat exchanger for crankcase oil
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Natural
Cylinders: 3
Displacement (ci): 179
Bore (in): 4.094
Stroke (in): 4.528
Rated RPM: 2300
Power Output (hp): 43

Transmission

Type: 8-speed selective gear transmission
Forward Gears: 8
Reverse Gears: 8
Total Gears: 16

Dimensions

Length (in): 154.7
Width (in): 66.9
Height (in): ROPS: 94.9, Cab: 90.6
Operating Weight (lb): 7660 (with ballast)

Power Take-Off (PTO)

PTO Type: Independent with dry disc clutch
PTO Speed 1 (rpm): 540 at 2198 engine rpm
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD or 4x4 MFWD 4WD
Drive Type: -
Steering Type: Power
Coolant Capacity (qts): -
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Rear Tires: Two 14.9R28; 23 psi (160 kPa) with ballast, Front Tires: Two 7.50-16; 54 psi (370 kPa) with ballast
Manufacture - End Year: 2004
Hitch Type: Three-Point Hitch
Hitch Category: Category II
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: Two-post folding ROPS or Cab (optional)
Starter Type: Electric
Brake Type: Wet disc hydraulically operated by two-foot pedals
Hydraulic System Type: Open center

Test Results

Nebraska Tractor Test Laboratory - Test Date: April to November, 1999

Maximum Power and Fuel Consumption

Maximum Power: 43.0 HP (32.1 kW) at 2300 rpm
Fuel Consumption at Maximum Power: 2.71 Gal/hr (10.26 l/h) with a fuel efficiency of 0.441 lb/hp.hr (0.268 kg/kW.h)
Maximum Torque: 136.3 lb.-ft. (184.8 Nm) at 1099 rpm

Drawbar Performance

Power at 4th Gear (Ballasted, Front Drive Engaged): 27.8 HP (20.7 kW) with a drawbar pull of 2235 lbs (9.94 kN) and a speed of 4.67 mph (7.51 km/h)
Fuel Consumption at 4th Gear: 0.580 lb/hp.hr (0.353 kg/kW.h) with a fuel efficiency of 12.08 Hp.hr/gal (2.38 kW.h/l)

Hydraulic Performance

Maximum Force Exerted (at hitch points): 4045 lbs (18.0 kN) at the frame and 4405 lbs (19.6 kN) at lower link ends
Pump Delivery Rate at Maximum Hydraulic Power: 14.5 GPM (55.0 l/min) at a delivery pressure of 2410 psi (166 bar) with a hydraulic power of 20.4 HP (15.2 kW)

Tire and Weight Configuration

Rear Tires (With Ballast): Two 14.9R28; **; 23 psi (160 kPa)
Front Tires (With Ballast): Two 7.50-16; 8; 54 psi (370 kPa)
Total Static Weight With Operator: 7660 lbs (3475 kg)

Sound Level

Tractor Sound Level (At no load): 79.5 dB(A) in 4th (4S) gear
Bystander Sound Level: 85.5 dB(A) in 8th (4F) gear

Nebraska Tractor Test Lab.(1999).Nebraska Summary: S330 New Holland TN55. Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/2809