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John Deere 644 Wheel loaders tech specs

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2015-2019
2,896 mm Max dump height
1,615.44 mm Max dump reach
John Deere PowerTech PSS 6090 Engine model
173.01 kw Gross power
3.06 cu m Bucket capacity
18,682 kg Operating weight

The John Deere 644K (2015–2019) is a heavy-duty mid-size wheel loader built for serious productivity. It brings about 173 kW (232 hp) from a Tier 3 PowerTech engine, weighs in at 18.3–18.7 t, and handles 2.8–3.2 m³ buckets. With a breakout force of 15,378 kg, it's designed to load fast and carry big—without sacrificing reliability.

Engine: PowerTech 6068H, Tier 3 – 173 kW (232 hp)

Operating Weight: ~18,333 kg (40,417 lb) to ~18,682 kg (41,188 lb)

Bucket Capacity: ~2.8–3.2 m³ (4.0–4.25 yd³)

Breakout Force: ~15,378 kg (33,903 lb)

Travel Speed: Up to ~40 km/h via PowerShift transmission

Makana rating

Owner rating

 | 3

Market average

AED 850,000

Starting from

AED 690,000

John deere 644 Technical specifications

Loader

Breakout force

150.81 kN

General

Max dump height

2896 mm

Tire size

23.5 R25

Engine model

John Deere PowerTech PSS 6090

Transmission type

Powershift

Bucket capacity

3.06 cu m

Operating weight

18,682 kg

Service refill capacities

Hydraulic fluid cap

105.22 liter

Transmission fluid cap

23.09 liter

Front axle fluid capacity

22.33 liter

Fuel cap

397.05 liter

Rear axle fluid capacity

22.33 liter

Dimensions

Height - top of cab

3.44 m

Transport length

8 m

Turning radius

13.29 m

Wheelbase

3.26 m

Transport width

2 m

Operating specifications

Max dump reach

1615.44 mm

Brake system

Wet Multi Disc - Transmission

Engine

Alternator supplied amperage

130 Amh

Displacement

9001.43 cu cm

Emissions

Tier 4

Gross power

173.01 kw

Max torque

1062 Nm

Torque rise

56 %

Hydraulic system

Pump type

Piston

Pump flow cap

297.12 lpm

Relief valve pressure

250.97 bar

View more
Download datasheets
OEM product brochure

John deere 644 expert review

Reviewed by Raul M. on September 4, 2025

Overview

Heavy-duty loader built to last. Designed for high-output performance with engineering for uptime—Quad-Cool, payload options, and service accessibility.

Pros Exceptional breakout and bucket fit.
Technology for uptime: Payload, LCD, PowerShift.
Cons Size demands site/transport prep.
Fuel efficiency less than Tier 4 loaders.

Performance & Efficiency

Consistent breakout with smart thermal control and fast cycles via PowerShift transmission.

In Comparison

Volvo L110E offers smoother ride, Komatsu WA470-8 has larger bucket—Deere wins on support and uptime.

Verdict

For serious loader work where uptime, power, and simplicity matter—the 644K is a sharp pick. K-Series II adds newer emissions tech, but the original stays robust.

Show less

John deere 644 owner rating

John Deere 644 Wheel loaders [2015-2019]

2015-2019

Overall rating

Based on 3 ratings

4.3
performance

4.7

comfort

4.3

fuel efficiency

4.5

safety

4.7

features

4.7

5 stars

33 %

4 stars

67 %

3 stars

0 %

2 stars

0 %

1 stars

0 %

Pros
Heavy-duty breakout force with uptime-focused tech makes it a dependable choice for demanding production loading.
Cons
Large machine size and older fuel efficiency standards increase transport planning and operating costs.
performance

4.0

comfort

5.0

safety

5.0

features

4.0

Valuation

Last 12 month
2015

John deere 644 similar models

Highlight differences
John deere 644K
Cat 950G
Cat 966H
Loader
Breakout force 150.81 kN
Breakout force 120 kN
Breakout force 195 kN
Years 2015-2019
Years 2006-2025
Years 2014-2025
Market Average AED 850,000
Market Average AED 300,000
Market Average AED 550,000
Price AED 690,000
Price AED 150,000
Price AED 275,000
General
Max dump height 2,896 mm
Max dump height 3,100 mm
Max dump height 34.5 m
Tire size 23.5 R25
Tire size -
Tire size -
Engine model John Deere PowerTech PSS 6090
Engine model Cat 3054C
Engine model Cat C13 ACERT
Transmission type Powershift
Transmission type -
Transmission type -
Bucket capacity 3.06 cu m
Bucket capacity 3 cu m
Bucket capacity 5.6 m3
Operating weight 18,682 kg
Operating weight 16,500 kg
Operating weight 25,500 kg
Bucket width -
Bucket width 2,800 mm
Bucket width 3,700 mm
Lifting capacity -
Lifting capacity 5,800 kg
Lifting capacity 10,500 kg
Max speed forward -
Max speed forward 37 kph
Max speed forward 40 kph
Tipping load -
Tipping load 11,600 kg
Tipping load 21,000 kg
Service refill capacities
Hydraulic fluid cap 105.22 liter
Hydraulic fluid cap 115 liter
Hydraulic fluid cap 195 liter
Transmission fluid cap 23.09 liter
Transmission fluid cap -
Transmission fluid cap -
Front axle fluid capacity 22.33 liter
Front axle fluid capacity -
Front axle fluid capacity -
Fuel cap 397.05 liter
Fuel cap 300 liter
Fuel cap 530 liter
Rear axle fluid capacity 22.33 liter
Rear axle fluid capacity -
Rear axle fluid capacity -
Dimensions
Height - top of cab 3.44 m
Height - top of cab 3.25 m
Height - top of cab 3.65 m
Transport length 8 m
Transport length -
Transport length -
Turning radius 13.29 m
Turning radius -
Turning radius -
Wheelbase 3.26 m
Wheelbase 2.8 m
Wheelbase 3,400 mm
Transport width 2 m
Transport width -
Transport width -
Operating specifications
Max dump reach 1,615.44 mm
Max dump reach 1,080 mm
Max dump reach 1,280 mm
Brake system Wet Multi Disc - Transmission
Brake system -
Brake system -
Rack back angle -
Rack back angle 45 º
Rack back angle 45 º
Engine
Alternator supplied amperage 130 Amh
Alternator supplied amperage -
Alternator supplied amperage -
Displacement 9,001.43 cu cm
Displacement 4,400 cu cm
Displacement 12,500 cu cm
Emissions Tier 4
Emissions -
Emissions -
Gross power 173.01 kw
Gross power 130.5 kw
Gross power 224.46 kw
Max torque 1,062 Nm
Max torque 780 Nm
Max torque 1,650 Nm
Torque rise 56 %
Torque rise -
Torque rise -
Hydraulic system
Pump type Piston
Pump type Gear pump
Pump type Piston pump
Pump flow cap 297.12 lpm
Pump flow cap 190 lpm
Pump flow cap 320 lpm
Relief valve pressure 250.97 bar
Relief valve pressure 220.63 bar
Relief valve pressure 248.21 bar

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build datetime: 4/3/2026, 2:19:32 PM