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UNAC-20TRR

UNAC-20TRR

UNAC-20TRR

Product catalog summary
Purpose
The 20TRR is a high-capacity road-rail excavator designed for performing earthwork tasks directly from railroad tracks. It offers significant freedom of movement and a large lifting capacity, making it suitable for urban and suburban environments.
Description
The 20TRR is a self-propelled vehicle with hydrostatic drive, based on a Caterpillar excavator. It retains the original boom kinematics and includes modifications such as a clipped counterweight for lifting heavy loads, the UNAC SMART-CS system for real-time machine monitoring, and two UNAC-HDTP motorized rail axles for hydrostatic driving and braking.
Strengths
  • Adaptable for urban and suburban work, even in restricted spaces.
  • Complies with stringent road-rail standards, allowing operation under hot wires.
  • Real-time lane inclination and load indication.
  • Flexible axles reduce toppling risks and handle high track twists.
  • Operates in both rail directions with full turret rotation and rear-view cameras.
  • Electronic security for boom kinematics and rotation based on track status.
  • Optimized acceleration and deceleration on tracks.
  • Compatible with a wide range of tools, including augers, hydraulic breakers, and more.
  • Maintains Caterpillar's original warranty and benefits from UNAC and Caterpillar after-sales services.
  • Capable of lifting 2T up to 6m from the track center, even in unfavorable conditions.
  • Equipped with the UNAC SMART-CS system for safe and controlled operation.
  • Hydrostatic system allows operation in any weather.
  • Luxury/Comfort cab version with ergonomic controls, soundproofing, and air conditioning.
Technical Specifications
  • Engine: Diesel CATERPILLAR C4.4, ACERT technology, 147 hp / 108 kW at 2000 rpm.
  • Road Transmission: Electronically-managed hydraulic traction, 2 speeds, 4 driving wheels, speed up to 25 km/h.
  • Hydraulic Circuit: Central hydraulic motor on each axle, speed up to 23 km/h, hydraulic tank capacity of 135 L.
  • Steering: Hydraulic steering for 2 wheels, mini turning radius of 8.90 m.
  • Braking: Multi-disk brakes for road and rail, activated by various controls.
  • Cab: Luxury/Comfort version with adjustable seat, electronic dashboard, and digital displays.
  • Fuel Tank Capacity: 235 L, average autonomy of 21 hours.
  • Boom Kinematics: Variable adjustable boom of 5200 mm, average arm of 2100 mm.
  • Mass: Overall weight of 19,300 kg with standard arm.
  • Wheels and Tyres: Dual wheels, 10.00x20 MITAS NB38 tyres.
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Catalog excerpts

UNAC-20TRR-1

UNAC RAIL 20TRR ROAD-RAIL EXCAVATOR MANUFACTURER OF HEAVY DUTY TRENCHERS • FORESTRY MULCHING VEHICLES • MILITARY DOZERS • ROAD-RAIL SYSTEMS • SNOW CLEARERS Purpose The 20TRR is a high-capacity road-rail excavator that can perform earthwork tasks directly from a railroad track with great freedom of movement and with a large lifting capacity. Description The 20TRR is a self-propelled vehicle with hydrostatic drive. This road-rail excavator is espacially intended for urban and suburban work, able to work in restricted places. This vahicles is initially a Caterpillar excavator on which is maintened the same boom kinematics as the original machien and consequently modied in order to benet from: • Setting up of clipped counterweight to lift huge loads • A sophisticated UNAC SMART-CS peripheral-view and operator indication system to receive real-time information regarding the machine, its load, and tilt, and to congure limits. • Two UNAC-HDTP motorized rail axles for hydrostatic driving and braking, without necessity of oscillating axle - Exclusive UNAC concept. Strengths • Able to work on urban and suburban works: easiness in restricted workings • Very safe system, satisfying the most stringent road-rail standards, allowing to work under hot wires • Indication of lane inclination and load in real time, without restraint • Very exible axles that help to reduce risks of toppling and can tolerate high twists of tracks • Can work in both directions of the rail tracks thanks to the turret’s continual full rotation and the rear-view cameras • Electronic security system for the boom’s kinematics (different contact wire height levels) and for the rotation depending on a track’s status (cant and slope, adjacent track side, etc...) • Great acceleration and deceleration when on tracks to optimize time spent on work sites • Wide range of usable tools: auger, hydraulic rock breaker, buckets, hammers, universal pliers, hydraulic shears, mechanical pliers, compactor, clips with claws, loading bin, earthwork bin, and stripping beam • The Caterpillar initial warranty is ofcially maintained. The excavator benets from the UNAC after-sales service and from Caterpillar’s dynamic after-sales network. • Maintains the original excavator’s lifting and earthmoving workings capacities. The R/R excavator can lift 2T to a distance of up to 6m from the track centre, in an unfavourable cant situation and • • • • www.unac.fr Avenue de Camargue • Zone Industrielle B.P. 9 - 30310 VERGÈZE - FRANCE T. +33 (0)4 66 35 02 53 • F. +33 (0)4 66 35 09 32 • [email protected] can therefore hadle heavy equipment or also qork off-track. Possibility to make earthmoving and lifting from a track to the opposite side of the adjacent track Equipped with a sophisticated system UNAC SMART-CS, which allows to work in safe and controlled space, and maximize the work space Hydrostatic system allowing to work in any weather condition Luxury/Comfort version cab of Caterpillar, getting an optimal ergonomic of the commands, and matching comfort, soundproong, visibility and air conditionning.

 Open the catalog to page 1
UNAC-20TRR-2

ROAD-RAIL EXCAVATOR 20TRR ENGINE - Diesel CATERPILLAR C4.4, ACERT technology - Gross horsepower 147 hp / 108 kW at 2 000 rpm. ROAD TRANSMISSION - RAIL TRANSMISSION - Hydrostatic, 4 wheel drive - Central hydraulic motor on each axle: POCLAIN - Speed: from 0 to 23 km/h. HYDRAULIC CIRCUIT - Two serial pumps and two pumps on PTO - Specic lifting mode: +7% of lifting capacity - Hydraulic tank: 135 L, 220 L circuit. STEERING - Hydraulic steering for 2 steering wheels - Mini turning radius: 8.90 m. BRAKING • Road: the drive axles are equipped with multi-disk brakes with positive action for each wheel....

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.