RK Tractors RK37
The RK37 is a utility tractor made by RK Tractors. It's a 4-wheel drive tractor with power steering, which makes it easy to handle. The tractor has a 12-speed transmission that works the same way going forward and backward. This helps farmers change directions smoothly while working in the field. Under the hood, the RK37 has a Yanmar diesel engine with three cylinders. The engine is liquid-cooled and produces 37.4 horsepower, which is about average for its class. It has a high engine speed of 3000 rpm, making it responsive and efficient. The tractor weighs 3064 pounds and has a three-point hitch at the back that can lift up to 2645 pounds. This lifting power is above average, making the RK37 good for handling various farm tools. The tractor also has a PTO (Power Take-Off) that spins at 540 rpm, useful for running different attachments.
Quick specs
- Category
- Utility
- Engine Power Output
- 37hp
- Operating Weight
- 3,064 lb
- Transmission
- Syncro shuttle
At a glance
How the RK37 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The RK37 ranks at the 31st percentile for engine power among recorded utility tractors.
Overview
About the RK Tractors RK37
The RK37 is a utility tractor made by RK Tractors. It's a 4-wheel drive tractor with power steering, which makes it easy to handle. The tractor has a 12-speed transmission that works the same way going forward and backward. This helps farmers change directions smoothly while working in the field. Under the hood, the RK37 has a Yanmar diesel engine with three cylinders. The engine is liquid-cooled and produces 37.4 horsepower, which is about average for its class. It has a high engine speed of 3000 rpm, making it responsive and efficient. The tractor weighs 3064 pounds and has a three-point hitch at the back that can lift up to 2645 pounds. This lifting power is above average, making the RK37 good for handling various farm tools. The tractor also has a PTO (Power Take-Off) that spins at 540 rpm, useful for running different attachments.
Full specifications
Every recorded spec
General
| Manufacturer | RK Tractors |
|---|---|
| Model | RK37 |
| Category | Utility tractor |
| Type | 4x4 MFWD 4WD |
| Years built | 2017+ |
| Operating weight | 3,064lb |
Engine
| Make | Yanmar |
|---|---|
| Model | 3TNV88-CR |
| Power | 37.4hp |
| Cylinders | 3 |
| Displacement | 100.2ci |
| Bore | 3.46in |
| Stroke | 3.54in |
Transmission
| Type | Syncro shuttle |
|---|---|
| Forward gears | 12 |
| Reverse gears | 12 |
Chassis & drive
| Chassis | 4x4 MFWD 4WD |
|---|---|
| Drive | 4WD |
| Steering | Power |
| Brakes | Wet disc |
| Cab | Two-post ROPS |
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 126in |
|---|---|
| Width | 53.5in |
| Height | 94.5in |
| Operating weight | 3,064lb |
Head to head
RK37 vs. Utility median
How the RK Tractors RK37 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 37.4 hp | 55 hp | -32% | 31st |
| Engine Displacement | 100 ci | 183 ci | -45% | 22nd |
| Cylinders | 3 | 4 | -25% | 23rd |
| Forward Gears | 12 | 12 | at median | 50th |
| Operating Weight | 3,064 lb | 5,303 lb | -42% | 24th |
| Length | 126 in | 137 in | -8% | 36th |
| Width | 53.5 in | 66 in | -19% | 23rd |
| Height | 94.5 in | 94.1 in | 0% | 51st |
| 3-Point Hitch Capacity | 2,645 lb | 3,197 lb | -17% | 34th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 1,083–5,720 models).
Compare to tractors with similar specs
Commonly compared RK Tractors tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| RK Tractors RK37H | 37.4 hp | 3,106 lb | — | Compare → |
| RK Tractors RK37HC | 37.4 hp | 3,450 lb | — | Compare → |
| RK Tractors RK37S | 37.4 hp | 3,065 lb | — | Compare → |
| RK Tractors RK37SC | 37.4 hp | 3,417 lb | — | Compare → |
| RK Tractors RK24H | 24 hp | 1,610 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers D15 | 37.44 hp | 4,036 lb | — | Compare → |
| Avery 20-35 | 37.33 hp | 7,550 lb | 1923+ | Compare → |
| Allis Chalmers D14 | 37 hp | 3,500 lb | 1957–1960 | Compare → |
| Antonio Carraro Tigre 4000F | 38 hp | 2,756 lb | — | Compare → |
| Antonio Carraro TTR 4400 | 38 hp | 2,811 lb | — | Compare → |
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FAQ
Common questions
When was the RK Tractors RK37 in production?
The RK Tractors RK37 was introduced in 2017.
What transmission is in the RK Tractors RK37?
Transmission on the RK Tractors RK37 is Syncro shuttle, with 12 forward speeds.
What three-point hitch category does the RK Tractors RK37 use?
The RK Tractors RK37 has a Category I three-point hitch rated to lift 2,645 lb.
How much horsepower does the RK Tractors RK37 have?
The RK Tractors RK37 produces 37.4 hp from its 3-cylinder engine. Engine displacement is 100.2 ci.
How much does the RK Tractors RK37 weigh?
The RK Tractors RK37 weighs about 3,064 lb in operating condition.
What maintenance does the RK Tractors RK37 require?
Like any tractor, the RK Tractors RK37 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.


