T109 Hydraulic Trencher with combo teeth

Standard Boom Length

36 in

Cutting Width

6 in

Chain Type

93 HP



Cat® Trenchers are designed for cutting narrow straight trenches in the soil prior to laying electrical, telephone and cable lines, or water and gas pipe. Trenchers are ideal for residential, commercial, agricultural, building construction, lawn care and golf course maintenance.

Detailed Equipment Specifications

  • Standard Boom Length

    36 in

    914 mm

  • Cutting Width

    6 in

    152 mm

  • Chain Type

    93.0 in

    93.0 mm


  • Required Hydraulics

    93.0 in

    93.0 mm

    Standard Flow

  • Overall Width

    56.1 in

    1,426 mm

  • Overall Length

    92.4 in

    2,348 mm

  • Weight

    1,099 lb

    498.5 kg

  • Overall Height

    30.9 in

    786 mm

  • Optimal Hydraulic Flow

    93.0 in

    93.0 mm

    42-86 L/min (11-23 gpm)

  • Optimal Hydraulic Pressure

    93.0 in

    93.0 mm

    145-235 bar (2100-3400 psi)

  • Drive Shaft Speed at Maximum Flow

    93.0 in

    93.0 mm

    203 rpm

  • Side Shift Travel

    16.5 in

    419 mm

  • Maximum Auger Clearance

    21 in

    534 mm

  • Spoil Auger Diameter

    18 in

    457 mm

  • Optional Cutting Widths

    93.0 in

    93.0 mm

    203, 254, 305 mm (8, 10, 12 in)


Designed for cutting narrow, straight trenches in the soil prior to laying electrical, telephone and cable lines, or water and gas pipe.

Direct Drive System

Direct drive system features a variable speed, bi-directional, gerotor style motor that delivers optimal chain speed, chain pull and torque for maximum trenching performance in a broad range of soil types.

Durable Anti-Back Flex Chain

Durable, double standard anti-back flex chain eliminates chain backlash and ensures teeth are positioned at the most efficient angle for smooth cutting and longer tooth life.

Hard-faced, Tungsten Carbide Steel Cupped Teeth

Hard-faced, tungsten carbide steel cupped teeth deliver long life in many soil conditions. Teeth are spaced for optimum digging performance in most soil types.

Hydraulic or Manual Side Shift

Hydraulic or manual side shift provides close trenching flexibility near structures or obstructions. Hydraulic side shift, standard on the T315 (optional on T109 and T112) is controlled from operator’s compartment using the standard flow auxiliary hydraulic circuit selector control.

Optional Chain Types and Cutting Widths

Optional chain types and cutting widths are available for specific soil, digging requirements and trench widths. These chain types include Standard, Combo, Terminator, and Rockfrost.

Large Diameter Bolt-On Spoil Auger

Large diameter bolt-on spoil auger improves loose soil removal from trenching area and allows for quick, easy removal and servicing.

Optional Bolt-On Crumber Bar

Optional bolt-on crumber bar with shoe improves soil removal to provide cleaner trench. Shoes available in size range to accommodate trench width.

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