• Designed specifically for 6-ft to 12-ft (1.8-m to 3.7-m) rock trenching jobs, the T855III is a great choice for utility, water and sewer installation
  • Match the optional sectionalized boom to the job for optimal results, minimal tooth wear and reduced vibrations
  • Vermeer SmartTEC electronic control system monitors real-time machine performance
  • Get a Quote Value Your Trade Request Brochure
  • Send to a Friend
  • Payment Calculator

    • Get information on the T855III Pipeline Trencher

    Fields with asterisks* are required. Please email our helpful staff with any questions or comments using the contact form.

    Request Brochure

    Fields with asterisks* are required. Please email our helpful staff with any questions or comments using the contact form.

    Send your friend information on the T855III Pipeline Trencher

    Fields with asterisks* are required. Your friend will receive an email that contains a reference to this page. Please send this email only to people you know who would be interested in this information.

    Requesting Trade In on T855III Pipeline Trencher

    Contact Information
    Equipment Interested In
    Trade Information

    Request A Demo

    Fields with asterisks* are required.

    Loan Calculator

    Use the Loan Calculator to help you determine the financing and payment options that are best for you.

    Amount Financed ($)
    Interest Rate (%)
    Loan Term in Months
    Monthly Payment Calculated

    **The accuracy of this calculator and its applicability to your circumstances is not guaranteed. You should obtain personal advice from qualified professionals. This information is provided for illustrative purposes only and does not constitute an application. This notice does not guarantee loan approval, nor is it an offer or commitment to make a loan to you on the above terms.

Shopping Tools
Contact Salesman
Request Demo
Apply for Financing

T855III Pipeline Trencher Features & Benefits

Elevated operator visibility and comfort

The elevating cab allows optimal visibility and added comfort with the air ride seat.

The sealed cab has self-contained heating and air conditioning with sound attenuating foam.

It is also a rollover protective module (ROPM) and provides falling object protection (FOPS).

Advanced technology for improved machine efficiency

SmartTEC performance monitoring assists operators with adjustments to machine controls to help improve efficiency and tracks the operational performance of the machine on a consistent platform across all machine models.

T855III Pipeline Trencher Specs & Compare

TRANSPORT DIMENSIONS 
Approach Angle20 deg
Height Range131 " - 143 " (332.7 cm - 363.2 cm) (143 "/363.2 cm represents the height with Rockwheel attachment)
Length with 40" (101.6 cm) End Idler and 6 ft (1.83 m) Boom32.8 ft
Length with 40" (101.6 cm) End Idler and 8 ft (2.44 m) Boom35.3 ft
Length with 40" (101.6 cm) End Idler and 10 ft (3.05 m) Boom37.8 ft
Length with 40" (101.6 cm) End Idler and 12 ft (3.66 m) Boom40.3 ft
Weight Range65,500 lbs to 94,000 lbs (29,483 kg - 42,637 kg)
Width Ranges101 " - 104 " (256.5 cm - 264.2 cm)
ENGINE - OPTION ONE 
Make and ModelCaterpillar C9 ACERT Tier 3
Gross Horsepower350 hp
Rated Engine RPM2200
Number of Cylinders6
Fuel Tank Capacity172 gal
Operating Range9.4 hours
Fuel Consumption at Full Load18.3 gph
Maximum Engine Operating Angle (Operating angles do not indicate safe machine operating angles)40 deg
Air CleanerDry-type exhaust aspirated
AspirationTurbocharged and air-to-air aftercooled
Cooling MediumLiquid
Electrical System24 Volt DC
Oil FilterFull flow
ENGINE - OPTION TWO 
Make and ModelCaterpillar C9 ACERT Tier 4 Final
Gross Horsepower350 hp
Rated Engine RPM2200
Number of Cylinders6
Fuel Tank Capacity172 gal
Operating Range9.4 hours
Fuel Consumption at Full Load18.3 gph
Maximum Engine Operating Angle (Operating angles do not indicate safe machine operating angles)40 deg
Air CleanerDry-type with precleaner
AspirationTurbocharged and air-to-air aftercooled
Cooling MediumLiquid
Electrical System24 Volt DC
Oil FilterFull flow
TRACKS 
Auto Self LevelYes
Ground Pressure Minimum11 psi
Ground Pressure Maximum16.4 psi
Tilt Track AvailableYes
Tilt Track Max Angle+/- 9 degrees or +/- 12 inches
Track Drive TypeDual path hydrostatic with planetary transmission
Track Length147 in
Track Pad TypeSingle, double, or triple grouser
Track Pad Width Ranges20 " or 24 " (50.8 or 61 cm)
Track SizeD6
Maximum Ground Speed - Low103.3 ft/min
Maximum Ground Speed - High213ft/min
Parking and Emergency Brakespring-applied, hydraulic release, wet disc brakeSpring applied, hydraulic release, wet disc brake
Service BrakesHydrostatic
CONVEYOR 
Belt Width30 in
Conveyor Belt Speed Range0 - 917 fpm (0-279.5 mpm)
Conveyor Belt StyleCleated or finger type
Conveyor Length96 " or 156 " (243.8 cm or 396.2 cm)
Conveyor Shift AvailableYes
Conveyor Shift Distance Range1.5 " and 61.5 " (3.8 cm and 156.2 cm)
Conveyor StyleCurved
Discharge DirectionRight or left
Discharge Height Range72.5 " (184.2 cm)
ATTACHMENTS 
TrencherYes
Terrain LevelerYes
RockwheelYes
Bucket WheelNo
CAB 
CabYes
Control SystemTEC Plus
Air Conditioner/HeaterYes
Air Suspension SeatNo
AM/FM Stereo with Weather BandYes
ElevatingYes
Pressurized/Filtered AirYes
Rollover Protective Structure (ROPM)Yes
HYDRAULIC SYSTEM 
Oil Tank Capacity145 gal
Oil TypeVermeer HyPower 68 or Vermeer HyPower 100
Pressure Setting2500 psi
Pump Flow at Maximum RPM30.2 gpm
Pump TypePressure and flow compensated (load sensing)