The JCB 85Z-1 is a compact zero-tail-swing mini excavator designed for construction, utility, landscaping, and site preparation work. It is part of JCB's 8-ton class and is commonly used where maneuverability and reduced rear overhang are important. The 85Z-1 typically features a conventional excavator boom and arm arrangement, hydraulic auxiliary circuits for attachments, and a tracked undercarriage for stability on uneven ground. Its size allows operation in confined job sites while still providing digging depth, lifting capability, and transportability. The model is used in trenching, grading, demolition, and general earthmoving applications.
Blade
JCB 85Z-1 Mini Excavator Blade specifications
Approach Angle
27.8 degrees
Blade Width
2,320.00 mm (91.34 in)
Dig Depth (Below Ground)
1.60 ft (0.49 m)
Height
18.70 in (47.50 cm)
Maximum Height
1.60 ft (0.49 m)
Reach In Front Of Tracks
2.10 ft (0.64 m)
Boom
JCB 85Z-1 Mini Excavator Boom specifications
Boom Swing Left
55 degrees
Boom Swing Right
60 degrees
Bucket Rotation
188 degrees
Bucket Tearout
12,836.60 lbs (5,821.59 kg)
Dipper Rotation
114 degrees
Dipper Tearout
11,218.00 lbs (5,087.53 kg)
Slew Speed
10 rpm
Boom/Stick 1
JCB 85Z-1 Mini Excavator Boom/Stick 1 specifications
Max Digging Reach
23.07 ft (7.03 m)
Max Reach Along Ground
22.47 ft (6.85 m)
Max.Dumping Height
16.48 ft (5.02 m)
Maximum Digging Depth – Dozer Down
12.19 ft (3.72 m)
Maximum Digging Depth – Dozer Up
6.89 ft (2.10 m)
Maximum Height To Dipper Nose Pivot Pin
19.35 ft (5.90 m)
Maximum Vertical Wallcut Depth
9.65 ft (2.94 m)
Minimum Front Swing Radius (Fully Offset)
8.73 ft (2.66 m)
Minimum Front Swing Radius (No Offset)
10.00 ft (3.05 m)
Dimensions
JCB 85Z-1 Mini Excavator Dimensions specifications
Cab Height
61.19 in (155.42 cm)
Ground Clearance
1.15 ft (0.35 m)
Height To Top Of Cab
8.88 ft (2.71 m)
Length Of Track On Ground
7.63 ft (2.33 m)
Overall Width Of Superstructure
7.12 ft (2.17 m)
Removal Counterweight Clearance
2.50 ft (0.76 m)
Tail Swing Radius
3.76 ft (1.15 m)
Track Gauge
6.07 ft (1.85 m)
Transport Height- Minimum
8,877.96 ft (2,706.00 m)
Transport Length, Minimum
19,137.14 ft (5,833.00 m)
Width Over Tracks
7.55 ft (2.30 m)
Engine
JCB 85Z-1 Mini Excavator Engine specifications
Alternator
100 amps
Cooling System
Water cooled
Displacement
152,559.40 cu in (2,500,006.18 cu cm)
Engine Model
KDI 2504 TCR
Fuel
Diesel
Gross Power
48.00 hp (35.79 kw)
Net Power
45.40 hp (33.86 kw)
Power Measured @
2200 rpm
Starter Motor
2 KW
Torque Measured @
1500 rpm
Hydraulic System
JCB 85Z-1 Mini Excavator Hydraulic System specifications
Auxiliary Hydraulic Flow
50.20 gpm (190.01 lpm)
Excavator/Track Main Relief
300 bar
Nominal Output
41.90 gpm (158.59 lpm)
Slew Main Relief
226 lpm
Operational
JCB 85Z-1 Mini Excavator Operational specifications
Cooling System Fluid Capacity
3.20 gal (12.11 l)
Engine Oil Capacity
3.00 gal (11.36 l)
Fuel Capacity
30.40 gal (115.06 l)
Hydraulic Pump Flow Capacity
17.50 gpm (66.24 lpm)
Hydraulic System Fluid Capacity
31.20 gal (118.09 l)
Operating Weight
14,552.80 lbs (6,599.91 kg)
Operational Voltage
12 V
Performance
JCB 85Z-1 Mini Excavator Performance specifications
Gradeability
30 %
Travel Speed - High
2.90 mph (4.67 kph)
Travel Speed Low
1.70 mph (2.74 kph)
Swing Mechanism
JCB 85Z-1 Mini Excavator Swing Mechanism specifications
Swing Speed
9.6 rpm
Undercarriage
JCB 85Z-1 Mini Excavator Undercarriage specifications
Number Of Track Rollers Per Side
5
Track Tension
Grease
Tractive Effort
134.49 lbs (60.99 kg)
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