- Category: Mini Excavators ➔
- Manufacturer: JCB ➔
- Model: 85Z-1 ➔
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.
Blades
| Approach angle | 27.8 degrees
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| Blade Height | 18.70 in (47.50 cm)
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| Blade width | 2,320.00 mm (91.34 in)
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| Dig depth (below ground) | 1.60 ft (0.49 m)
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| Maximum height | 1.60 ft (0.49 m)
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| Reach in front of tracks | 2.10 ft (0.64 m)
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Boom
| Boom swing left | 55 degrees
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| Boom swing right | 60 degrees
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| Bucket rotation | 188 degrees
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| Bucket tearout | 12,836.60 lbs (5,822.59 kg)
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| Dipper rotation | 114 degrees
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| Dipper tearout | 11,218.00 lbs (5,088.41 kg)
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| Slew speed | 10 rpm
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Boom/Stick Excavator Option 1
| Max Digging Reach | 23.10 ft (7.04 m)
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| Max Reach Along Ground | 22.50 ft (6.86 m)
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| Max.Dumping Height | 16.50 ft (5.03 m)
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| Maximum digging depth - dozer down | 12.20 ft (3.72 m)
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| Maximum digging depth - dozer up | 6.90 ft (2.10 m)
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| Maximum height to dipper nose pivot pin | 19.40 ft (5.91 m)
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| Maximum vertical wallcut depth | 9.70 ft (2.96 m)
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| Minimum front swing radius (fully offset) | 8.80 ft (2.68 m)
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| Minimum front swing radius (no offset) | 10.00 ft (3.05 m)
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Dimensions
| Cab height | 61.20 in (155.45 cm)
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| Ground Clearance | 1.20 ft (0.37 m)
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| Height - Top of Cab | 8.90 ft (2.71 m)
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| Length of Track on Ground | 7.70 ft (2.35 m)
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| Overall width of superstructure | 7.20 ft (2.19 m)
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| Removal Counterweight Clearance | 2.50 ft (0.76 m)
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| Tail Swing Radius | 3.80 ft (1.16 m)
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| Track Gauge | 6.10 ft (1.86 m)
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| Transport Height- Minimum | 8,878.00 ft (2,706.01 m)
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| Transport Length, Minimum | 19,137.20 ft (5,833.02 m)
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| Width Over Tracks | 7.60 ft (2.32 m)
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Engine
| Alternator | 100 amps
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| Cooling system | Water cooled
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| Displacement | 152,559.40 cu in (2,500,006.18 cu cm)
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| Engine Model | KDI 2504 TCR
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| Fuel | Diesel
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| Gross Power | 48.00 hp (35.79 kw)
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| Net Power | 45.40 hp (33.86 kw)
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| Power Measured @ | 2200 rpm
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| Starter Motor | 2 KW hp (1.49 kw)
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| Torque Measured @ | 1500 rpm
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Hydraulic System
| Auxiliary hydraulic flow | 50.20 gpm (190.01 lpm)
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| Excavator/track main relief | 300 bar
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| Nominal output | 41.90 gpm (158.59 lpm)
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| Slew main relief | 226 lpm
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Operating Specifications
| Cooling System Fluid Capacity | 3.20 gal (12.11 l)
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| Engine Oil Capacity | 3.00 gal (11.36 l)
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| Fuel Capacity | 30.40 gal (115.06 l)
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| Hydraulic Pump Flow Capacity | 17.50 gpm (66.24 lpm)
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| Hydraulic System Fluid Capacity | 31.20 gal (118.09 l)
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| Operating Voltage | 12 V
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| Operating Weight | 14,552.80 lbs (6,601.05 kg)
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Performance
| Gradeability | 30%
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| Travel speed low | 1.70 mph (2.74 kph)
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| Travel Speed - High | 2.90 mph (4.67 kph)
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Swing Mechanism
Undercarriage
| Number of Track Rollers per Side | 5
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| Track tension | Grease
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| Tractive Effort | 134.50 lbs (61.01 kg)
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