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644K Z-BAR AND HIGH-LIFT LOADERS WITH PIN-ON BUCKET
Z-Bar High-Lift
Dimensions with Bucket 3.2-m
3
(4.25 cu. yd.) general-purpose with bolt-on edge 3.2-m
3
(4.25 cu. yd.) general-purpose with bolt-on edge
A Height to Top of Cab and Canopy 3.43 m (11 ft. 3 in.) 3.43 m (11 ft. 3 in.)
B Hood Height 2.53 m (8 ft. 4 in.) 2.53 m (8 ft. 4 in.)
C Ground Clearance 461 mm (18.1 in.) 461 mm (18.1 in.)
D Length from Centerline to Front Axle 1.60 m (5 ft. 3 in.) 1.60 m (5 ft. 3 in.)
E Wheelbase 3.26 m (10 ft. 8 in.) 3.26 m (10 ft. 8 in.)
F Overall Length, Bucket on Ground 8.10 m (26 ft. 6.8 in.) 8.57 m (28 ft. 1.4 in.)
G Height to Hinge Pin, Fully Raised 4.12 m (13 ft. 6 in.) 4.54 m (14 ft. 11 in.)
H Dump Clearance, 45 deg., Full Height 2.91 m (9 ft. 6.5 in.) 3.33 m (10 ft. 11.1 in.)
I Reach, 45-deg. Dump, Full Height 1.06 m (3 ft. 5.7 in.) 1.19 m (3 ft. 10.9 in.)
J Reach, 45-deg. Dump, 2.13-m (7 ft. 0 in.) Clearance 1.61 m (5 ft. 3.4 in.) 2.06 m (6 ft. 9.1 in.)
K Maximum Digging Depth 106 mm (4.2 in.) 200 mm (7.9 in.)
L Maximum Rollback at Ground Level 42 deg. 41 deg.
M Maximum Rollback, Boom Fully Raised 55 deg. 47 deg.
N Maximum Bucket Dump Angle, Fully Raised 50 deg. 45 deg.
Loader Clearance Circle, Bucket Carry Position 13.19 m (43 ft. 3.1 in.) 13.62 m (44 ft. 8.2 in.)
SpeciƟcations with Bucket
Capacity, Heaped 3.2 m
3
(4.25 cu. yd.) 3.2 m
3
(4.25 cu. yd.)
Capacity, Struck 2.8 m
3
(3.7 cu. yd.) 2.8 m
3
(3.7 cu. yd.)
Bucket Weight with Bolt-On Cutting Edge 1735 kg (3,826 lb.) 1735 kg (3,826 lb.)
Bucket Width 3.04 m (10 ft. 0 in.) 3.04 m (10 ft. 0 in.)
Breakout Force 15 378 kg (33,903 lb.) 13 782 kg (30,384 lb.)
Tipping Load, Straight 14 906 kg (32,862 lb.) 12 237 kg (26,978 lb.)
Tipping Load, 40-deg. Full Turn 12 879 kg (28,393 lb.) 10 508 kg (23,165 lb.)
Rated Operating Load, 50% Full-Turn Tipping Load
(conforms to ISO 14397-1)*
6440 kg (14,197 lb.) 5254 kg (11,583 lb.)
Operating Weight 18 333 kg (40,417 lb.) 18 700 kg (41,226 lb.)
Loader operating information is based on machine with identiƟed linkage and standard equipment, PowerTech PVX 6090 (EPA Interim Tier 4/EU Stage IIIB) engine, ROPS cab, rear cast
bumper/counterweight, transmission side-frame guards, bottom guards, standard tires, full fuel tank, and 79-kg (175 lb.) operator. This information is affected by changes in tires,
ballast, and different attachments, and assumes no tire deƠection per the standard ISO 14397-1 section 5.
*Rated operating capacity based on Deere attachments only.
Hydraulic System/Steering 644K Z-BAR / HIGH-LIFT / POWERLLEL
Pump (loader and steering) Variable-displacement, axial-piston pump; closed-center, pressure-compensating system
Maximum Rated Flow at 6895 kPa (1,000 psi) and
2,350 rpm
310 L/m (82 gpm)
System Relief Pressure (loader and steering) 25 166 kPa (3,650 psi)
Loader Controls 2-function valve; joystick control or Ɵngertip controls; hydraulic-function enable/disable; optional 3rd- and 4th-function valve
with auxiliary lever
Steering (conforms to ISO 5010)
Type Power, fully hydraulic
Articulation Angle 80-deg. arc (40 deg. each direction)
Turning Radius (measured to centerline of outside tire) 5.57 m (18 ft. 3 in.)
EPA IT4/EU Stage IIIB with Hybrid-Electric Drive EPA IT4/EU Stage IIIB / EPA Tier 3/EU Stage IIIA /
EPA Tier 2/EU Stage II
Hydraulic Cycle Times Z-Bar High-Lift Powerllel Z-Bar High-Lift Powerllel
Raise 8.2 sec. 8.2 sec. 8.2 sec. 6.4 sec. 6.4 sec. 6.4 sec.
Dump 2.3 sec. 2.3 sec. 2.8 sec. 1.6 sec. 1.6 sec. 2.1 sec.
Lower (Ơoat down) 3.0 sec. 3.0 sec. 2.8 sec. 3.0 sec. 3.0 sec. 2.8 sec.
Total 13.5 sec. 13.5 sec. 13.8 sec. 11.0 sec. 11.0 sec. 11.3 sec.
Dimensions and SpeciƟcations with Pin-On Bucket
N
E
H
M
K
IG
L
F
C
D
A
Cab and
Canopy
BJ