Categories ↠ Wheel Loaders ↠ John Deere 644J Z-Bar

John Deere 644J Z-Bar Wheel Loader

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644J Z-Bar ➔

General Specifications

Bucket

Breakout Force	34,407 lbs (15,607 kg)
Bucket Capacity - heaped	4 cu yd (3 cu m)
Bucket Capacity - struck	4 cu yd (3 cu m)
Bucket Width	10 ft (3 m)
Dump Clearance at Max Raise	10 ft (3 m)

Dimensions

Ground Clearance	2 ft (0 m)
Height - Top of Cab	11 ft (3 m)
Hinge Pin - Max Height	14 ft (4 m)
Length with Bucket on Ground	27 ft (8 m)
Reach at Max Lift and Dump	4 ft (1 m)
Wheelbase	11 ft (3 m)
Width Over Tires	10 ft (3 m)

Engine

Aspiration	Turbocharged charge air cooled
Displacement	414 cu in (6,784 cu cm)
Engine Model	6068H
Net Power	185 hp (138 kw)
Number of Cylinders	6
Power Measured @	2200 rpm
Torque Measured @	1400 rpm
Torque Rise	55%

Hydraulic System

Dump Time	1.4 seconds
Lower Time	3 seconds
Pump Flow Capacity	68 gpm (257 lpm)
Pump Type	Variable axial piston
Raise Time	6.2 seconds
Relief Valve Setting	3600 psi

Operating Specifications

Alternator Supplied Amperage	80 amps
Cooling System Fluid Capacity	8 gal (30 l)
Engine Oil Fluid Capacity	7 gal (25 l)
Front Axle/Diff Fluid Capacity	6 gal (22 l)
Fuel Capacity	93 gal (352 l)
Hydraulic System Fluid Capacity	31 gal (117 l)
Operating Voltage	24 volts
Operating Weight	40,150 lbs (18,212 kg)
Rear Axle Oscillation	26 degrees
Rear Axle/Diff Fluid Capacity	6 gal (22 l)
Static Tipping Weight	34,379 lbs (15,594 kg)
Tire Size	23.5 R25
Transmission Fluid Capacity	7 gal (27 l)
Turning Radius	18 ft (5 m)

Transmission

Max Speed - Forward	22 mph (35 kph)
Max Speed - Reverse	16 mph (25 kph)
Number of Forward Gears	4
Number of Reverse Gears	3
Transmission Type	Automatic 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 2024, 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