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Yardboss | YB7725

Summary

The new YB7725 is a 22.7 t capacity industrial crane, offering a four-section 22 m boom, four-wheel drive/four-wheel steer capability. It also has a four-position pivoting boom head for low head room clearance and beam jack-style outriggers that can be extended or retracted at the same time.

Features

22,7 t capacity
21,6 m four-section boom
13,6 t deck carrying capacity
5,2 m offsettable swingaway extension
130 bhp Cummins QSB4.L (Tier III) diesel engine
Tilt steering wheel
Deluxe operator's cab with air-conditioning, diesel heater w/defroster, skylight, single-axis electronic controllers.
New swing-open cab door window
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Quick Reference Guide
Capacity
Main Boom Length
Boom Extension
Gross Weight
22,7 t
21 m
5 m
N.A.
Superstructure
Boom 7,21 m – 21,6 m (23 ft 8 in - 71 ft) full power main boom. Four-section boom with three (3) powered sections. Maximum tip height: 24,0 m (79 ft).
Offsettable swingaway extension 5,1 m (17 ft) offsettable swingaway extension. Offsets 0°,15°, and 30° via pivoting boom nose. Stows alongside base boom section. Maximum tip height: 28,9 m (95 ft).
Rated Capacity Limiter (RCL) Similar to the Load Indicator System, the Rated Capacity Limiter uses a similar display panel (receiver) with the addition of displaying boom angle and boom length read-outs on the panel. (wireless system)
Boom nose Two nickel plated steel sheaves mounted on heavy duty tapered roller bearings with removable pin-type rope guards. Quick reeve type boom nose with four-position (0°, +30°, +60°, and + 80°) pivoting to minimize head height requirements. Lowers head height by 0,6 m (2 ft).
Load Moment Indicator (LMI) “Graphics Display” of boom angle, boom length, boom radius, capacity, and allows for operator input to set the limit parameters based on the load chart. Displays color coded light bar and audible alarm with function cut-out if load exceeds the load chart parameters.(hardwired system)
Swing Ball bearing swing circle with 360° continuous rotation. Hydraulic motor driven pinion with brake. Maximum speed: 2.5 rpm
Boom elevation Two double acting hydraulic cylinders with integral holding valves provides elevation from -0° to +80°.
Anti-two block device Standard anti-two block device, which, when activated, provides an audible warning to the operator and "locks-out" all functions whose movement can cause two-blocking.
Load indicator (LSI) A simple effective and easy to use load indicating system used in conjunction with the anti-two block system to assist the operator in efficient operation of the unit within the limits of the load chart. The display panel displays the hook load and cuts-out the telescope and boom lift down function when a load limit is exceeded. The warning is by a flashing light on the display panel. In conjunction with the load display panel (receiver) there is a wireless transmitter and load sensing pin attached to the boom head that transmits the hook load to the display panel.(wireless system)
Hydraulic system One pressure compensated variable displacement axial piston pump with load sensing combined with two (2) gear pumps. Maximum output of: 238 LPM (79 GPM). Maximum operating pressure: 248 bars (3600 psi). Six section valve bank, chassis mounted, operated via dash mounted, pilot pressure hydraulic joysticks. 227 L (60 gal) hydraulic reservoir with sight level gauge and steel side plating to guard against side impacts. 10 micron return line filter with full flow by-pass protection and service indicator.
Hoist specifications Piston motor driven with automatic spring applied / hydraulically released wet brake.

Maximum hoist pull (first layer): 6804 kg (15,000 lb)
Maximum permissible single line pull: 5670 kg (12,500 lb) (3.5:1 design factor)
Maximum single line speed: 61 m/min (200 fpm)
Rope construction: 6X19 XIPS/IWRC
Rope diameter: 16 mm (5/8 in)
Rope length: Main hoist: 119 m (390 ft)
Maximum rope stowage: Main hoist: 151 m (495 ft)
Carrier
Chassis High strength alloy frame constructed with integral outrigger housings; front and rear lifting, tie-down, and towing lugs. 60 ft² carrydeck size with 13 608 kg (30,000 lb) deck only carrying capacity. Deck coated with anti-skid treatment.
Outriggers Two-stage hydraulic telescoping beam with vertical jack at the four corners provides extended and down and retracted and down lifting capacities. Integral holding valves on both beam and jack cylinders.

Outrigger pad size: 29,2 cm x 29,2 cm (11.5 in x 11.5 in) Maximum outrigger pad load: 20 321 kg (44,800 lb) / 339 p.s.i.
Outrigger controls Independent outrigger control rocker switches for beam or jack selection with separate extend/retract rocker switch. 360° bubble level located inside cab.
Standard engine (Tier III) Cummins QSB 4.5L, four cylinders / turbo-charged diesel rated at 974 kW (130 bhp) (Gross) at 2500 rpm. Standard 110V engine block heater and cold weather “ether” assist system. Engine hour meter located inside operators compartment. Maximum torque: 370 N-m (273 ft lb) at 2500 rpm.
Fuel tank capacity 189 L (50 gal)
Transmission Powershift with four speeds forward and reverse. Stalk mounted direction shifter with rotary gear selection.
Operators control station Frame mounted, open air style control station with cab shell includes all crane functions, driving controls, and overhead safety glass. Other standard equipment includes a suspension seat with seat belt, hourmeter, sight level bubble, and 2.5lb (1.1kg) fire extinguisher. The dash panel includes a multi-cluster gauge showing fuel, water temperature, oil pressure, and battery voltage. An engine monitoring indicator strip shows engine warning, stop engine, transmission low pressure, transmission high temperature, and low brake system pressure. The load indicator receiver is mounted to the top of the dash panel.
Operators control station enclosed Includes the standard cab shell with the addition of front, rear, and right side glass, a split (2 piece) hinged door with sliding glass, front windshield wiper and washer, hot water heater and defroster with fan and cab dome light are included.
Electrical system Two 12V maintenance-free batteries, 820CCA at 0°. 63 amp alternator.
Drive 2 wheel (rear drive) or 4 wheel selection, front and rear axle drive with planetary hubs and limited slip differential.
Steer Standard three steering modes. Front two wheel, four-wheel coordinated, and four-wheel crab steer with electronic self alignment, three-position rocker selector on dash panel. Outside turning radius: Two-wheel steer: 7,32 m (24 ft) Four-wheel steer: 4,04 m (13 ft 3 in)
Suspension/axles Front: Drive/steer with differential and planetary reduction hubs, axle is rigid mounted to frame.
Rear: Drive/steer with differential and planetary reduction hubs, axle is pivot mounted to frame allows up to 3.5° of oscillation.
Oscillation lockouts Manual switch to engage and disengage the rear axle lockouts. Engage when lifting on rubber and in crab steer mode, Disengage to allow oscillation when traveling over rough terrain.
Brakes Hydraulic actuated internal wet-disc service brake acting on all four wheels. Dash mounted toggle switch with light for activating or release of the dry disc parking brake mounted on the transmission output yoke .
Tires Standard: 17.5 x 25 Bias
Optional: 17.5R25 radials
Lights Full lighting including turn indicators, head, tail, brake and hazard warning lights recessed mounted.
Maximum speed 31,3 km/h (19.5 mph)
Gradeability (theoretical) 63%...... (at engine stall) NO LOAD
38%......(at engine stall) with 13 608 kg (30,000 lb) DECK LOAD
Gross vehicle weight (G.V.W.) Open cab: 19 786 kg (43,620 lb)
Closed cab: 20 285 kg (44,720 lb)
Miscellaneous standard equipment 22 t (25 USt) Two sheave “galvanize coated”
hookblock, with “Quick Reeve”.
Back-up motion alarm
Outrigger motion alarm
Dual rear-view mirrors
Optional Equipment
Options AUXILIARY LIGHTING: includes cab mounted amber flashing light, dual base boom mounted floodlights
CONVENIENCE PACKAGE: includes front and rear pintle hitch and headlight/taillight grille covers
ENCLOSED CAB PACKAGE: includes heater and defroster, cab dome light, all window glass, and two piece split door
5,2m (17 ft) fixed extension
Air conditioner
Catalytic convertor
Hoist drum rotation indicator
Wire rope 3rd wrap indicator with hoist function cut-out
3629 kg (8000 lb) below deck mounted tow winch
Foam – filled tires