RK Tractors RK37

Last Updated: June 2024

Overview

The RK Tractors RK37 is a 4WD compact utility tractor designed and built by TYM and distributed by RK Tractors, a subsidiary of Rural King. The tractor hosts a Yanmar 3TNV88-CR three-cylinder diesel engine with liquid cooling, offering 37.4 horsepower at 3000 RPM and a displacement of 100.2 cubic inches. Available in various configurations with different lengths, widths, and weights, the RK37 can either be equipped with a syncro shuttle transmission with 12 gears in both forward and reverse or a hydrostatic transmission with an infinite number of gears across three ranges. This versatility is supplemented with a Category I three-point hitch capable of lifting 2645 pounds, making the RK37 suitable for various tasks and attachments. The tractor provides operational comfort with features such as power steering, wet disc brakes, and the option of an open station with a two-post ROPS stand or an enclosed cab. With its attachment-ready design, the RK37 caters to a wide range of agricultural and maintenance functions.
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Key Specifications

Category: Utility

Power Output: 37.4

Transmission: Syncro shuttle / Hydrostatic

Drive Type: 4WD

Operating Weight: 3064 / 3109 / 3417 / 3450

Fuel Type: Diesel

RK Tractors RK37 vs. Similar Tractors

Power Output
Average
Greater than 34% of similar tractors.
Hitch Capacity
Average
Greater than 44% of similar tractors.
Operating Weight
Excellent
Greater than 99% of similar tractors.

Technical Specifications

Engine

Manufacturer
Yanmar
Model
3TNV88-CR
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Natural Aspiration
Cylinders
3
Displacement (ci)
100.2
Bore (in)
3.46
Stroke (in)
3.54
Rated RPM
3000
Power Output (hp)
37.4

Transmission

Type
Syncro shuttle / Hydrostatic
Forward Gears
12 / Infinite (3-range)
Reverse Gears
12 / Infinite (3-range)
Total Gears
-

Dimensions

Length (in)
126 / 128
Width (in)
53.5 / 58.1
Height (in)
94.5 / 92.5
Operating Weight (lb)
3064 / 3109 / 3417 / 3450

Power Take-Off (PTO)

PTO Type
Independent
PTO Speed 1 (rpm)
540
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x4 MFWD 4WD
Drive Type
4WD
Steering Type
Power
Coolant Capacity (qts)
-
Front Tire Diameter (in)
Ag: Unknown, Lawn/Turf: Unknown
Front Tire Width (in)
Ag: Unknown, Lawn/Turf: Unknown
Rear Tire Diameter (in)
Ag: Unknown, Lawn/Turf: Unknown
Rear Tire Width (in)
Ag: Unknown, Lawn/Turf: Unknown
Front/Rear Rim Diameter (in)
-
Tire Type
Ag, Lawn/Turf
Manufacture - End Year
-
Hitch Type
Three-Point Hitch
Hitch Category
Category I
Hitch Position
Rear
Hitch Capacity (lb)
2645
Operator Station Type
Two-post ROPS / Cab
Starter Type
Electric
Brake Type
Wet disc
Hydraulic System Type
-