John Deere 644K Powerllel w/Q Coupler Wheel Loader Specs

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644K Powerllel w/Q Coupler ➔

Bucket

John Deere 644K Powerllel w/Q Coupler Wheel Loader Bucket specifications
Breakout Force	26,519.00 lbs (12,026.76 kg)
Bucket Capacity - Heaped	3.93 cu yd
Bucket Capacity - Struck	3.41 cu yd
Bucket Width	9.98 ft (3.04 m)
Dump Clearance At Max Raise	9.16 ft (2.79 m)

Dimensions

John Deere 644K Powerllel w/Q Coupler Wheel Loader Dimensions specifications
Ground Clearance	1.52 ft (0.46 m)
Height To Top Of Cab	11.26 ft (3.43 m)
Hinge Pin - Max Height	13.51 ft (4.12 m)
Length With Bucket On Ground	27.91 ft (8.51 m)
Reach At Max Lift And Dump	3.94 ft (1.20 m)
Wheelbase	10.70 ft (3.26 m)
Width Over Tires	9.43 ft (2.87 m)

Engine

John Deere 644K Powerllel w/Q Coupler Wheel Loader Engine specifications
Aspiration	Turbocharged charge air cooled
Displacement	414.00 cu in (6,784.26 cu cm)
Engine Make	2240
Engine Model	6068H, Tier III certified
Max Torque	749.00 lbs ft (1,015.49 nm)
Net Power	232.00 hp (173.01 kw)
Number Of Cylinders	6
Power Measured @	1700 rpm
Torque Measured @	1400 rpm
Torque Rise	55 %

Hydraulic System

John Deere 644K Powerllel w/Q Coupler Wheel Loader Hydraulic System specifications
Dump Time	1.9 sec
Lower Time	2.8 sec
Pump Flow Capacity	81.90 gpm (309.99 lpm)
Pump Type	Variable axial piston
Raise Time	6.1 sec
Relief Valve Setting	3650 psi

Operational

John Deere 644K Powerllel w/Q Coupler Wheel Loader Operational specifications
Alternator Supplied Amperage	80 amps
Cooling System Fluid Capacity	7.80 gal (29.52 l)
Engine Oil Fluid Capacity	6.50 gal (24.60 l)
Front Axle/Diff Fluid Capacity	5.90 gal (22.33 l)
Fuel Capacity	93.00 gal (352.01 l)
Hydraulic System Fluid Capacity	29.10 gal (110.14 l)
Operating Voltage	24 V
Operating Weight	43,563.40 lbs (19,756.64 kg)
Rear Axle Oscillation	26 degrees
Rear Axle/Diff Fluid Capacity	5.90 gal (22.33 l)
Static Tipping Weight	29,034.90 lbs (13,167.76 kg)
Tire Size	23.5 R25
Transmission Fluid Capacity	6.10 gal (23.09 l)
Turning Radius	18.30 ft (5.58 m)

Transmission

John Deere 644K Powerllel w/Q Coupler Wheel Loader Transmission specifications
Max Speed - Forward	22.80 mph (36.69 kph)
Max Speed - Reverse	15.50 mph (24.94 kph)
Number Of Forward Gears	4
Number Of Reverse Gears	3
Transmission Type	Countershaft, powershift

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon