Categories ↠ Wheel Loaders ↠ John Deere 644B

John Deere 644B Wheel Loader

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644B ➔

The John Deere 644B is a wheel loader designed for material handling, loading, stockpiling, and general construction work. As part of John Deere's B-series wheel loaders, the 644B was built for use in aggregate yards, roadbuilding, agriculture, and industrial sites. It features a front-mounted loader bucket, articulated steering, and a diesel powertrain suited to repetitive loading cycles and site transport. The 644B is commonly referenced in used equipment, parts, and service contexts due to its established presence in the wheel loader market. It remains a recognized model for operators seeking a mid-size loader in legacy John Deere equipment listings.

See all John Deere 644Bs for sale

Bucket

Breakout Force	24,120 lbs (10,941 kg)
Bucket Capacity - heaped	3 cu yd (2 cu m)
Bucket Capacity - struck	2 cu yd (2 cu m)
Bucket Width	9 ft (3 m)
Dump Clearance at Max Raise	9 ft (3 m)

Dimensions

Ground Clearance	2 ft (1 m)
Height - Top of Cab	11 ft (3 m)
Hinge Pin - Max Height	12 ft (4 m)
Length with Bucket on Ground	21 ft (6 m)
Reach at Max Lift and Dump	3 ft (1 m)
Wheelbase	9 ft (3 m)

Engine

Aspiration	Turbocharged
Displacement	531 cu in (8,702 cu cm)
Gross Power	160 hp (119 kw)
Net Power	145 hp (108 kw)
Number of Cylinders	6
Power Measured @	2200 rpm
Torque Measured @	1500 rpm

Hydraulic System

Pump Flow Capacity	58 gpm (220 lpm)
Pump Type	Gear
Relief Valve Setting	2250 psi

Operating Specifications

Alternator Supplied Amperage	42 amps
Cooling System Fluid Capacity	12 gal (47 l)
Engine Oil Fluid Capacity	6 gal (21 l)
Front Axle/Diff Fluid Capacity	6 gal (23 l)
Fuel Capacity	56 gal (212 l)
Hydraulic System Fluid Capacity	18 gal (66 l)
Operating Voltage	12 volts
Operating Weight	28,100 lbs (12,746 kg)
Rear Axle Oscillation	22 degrees
Rear Axle/Diff Fluid Capacity	6 gal (24 l)
Static Tipping Weight	22,905 lbs (10,390 kg)
Tire Size	14.5-25 / 20.5-25
Transmission Fluid Capacity	10 gal (37 l)
Turning Radius	16 ft (5 m)

Transmission

Max Speed - Forward	26 mph (42 kph)
Max Speed - Reverse	10 mph (16 kph)
Number of Forward Gears	4
Number of Reverse Gears	2
Transmission Type	Power shift Planetary

John Deere 644Bs currently for sale

A John Deere 644B From 4M Iron LLC for $9,900.00 USD

A John Deere 644B From Ritchie Bros. Auctioneers for Auction Pricing

A 1979 John Deere 644B From West Side Tractor Sales Co. Inc. for $15,000.00 USD

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