NEW TB257FR - short tail swing with
sts side to side offset boom 


The new TB257FR features a unique patented side-to-side (STS) offset boom coupled with the near zero tail swing, for unrivalled versatility and visibility.

The unique FR design provides for parallel trenching right up to walls  and buildings. 
A floor mounted pedal allows you to position the STS offset boom anywhere across the front of the machine without any reduction in dig depth or ground reach.

For operators, the STS offset boom moves into position, no more moving the whole machine for improved excavating angles, simply let the STS offset do all the work.

The STS offset combined with the near zero tail swing delivers the most versatile compact machine for site. The TB257FR can rotate fully when the boom is stowed in the full upright position, the upper structure and cab only exceeds the track footprint by centimetres.

The TB257FR has a low centre of gravity and optimized counterweight creating an extremely stable platform with lifting capabilities similar to that of a conventional machine.

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Specification

Engine

Make Kubota
Model V2403-CR-TE5B
Rated Output (kW)/RPM 39.0 / 2200
Maximum Torque (Nm) 195.6
Cylinders 4
Displacement (cc) 2434
Electrical System 12volt / 90amp

Dimensions & Weight

Operating Weight: Cab(kg) 6061
Length (Transporting) (mm) 5395
Ground Clearance (mm) 300
Dozer Blade (W x H) (mm) 2000 x 430
Blade Range Up/Down 430/605

Front Swing Radius

Front swing Radius (mm)  1435
Rear Slew Radius (mm) 1180
Bucket Offset RH/LH

Operating Information

Max Dig Depth mm   3895
Max Dump Height mm 3890 
Max Reach Ground mm   6080
Max Vert Dig Depth mm   3160
Max Bucket Digging Force (kN) 36.6
Max Arm Digging Force (kN) 23.1

Hydraulic System

Set Pressure (bar) 240
Pump Type Variable x 2 + Gear x 2
Std 1st Aux Max 
Flow (l/min)
Pressure Bar

105
206
 Std 2nd Aux Max 
Flow (l/min)
Pressure Bar
 
44.7
206

Std 3rd Aux - Hardlock
Option Factory Fitted 4th Auxiliary 

Swing System

Boom Swing Angle (L/R) 30 deg /
16 deg
Slew Speed (rpm) 9.6
Slew Motor Axial Piston
Slew Brake Wet Friction Plates

Undercarriage

Traction Motor Axial Piston
Traction Drive Planetary
Traction Brake Disc
Track Width (mm) 400
Ground Contact Length (mm) 1980
Ground Pressure (kpa) 33.1
Travel Speed (K/ph) 2.6-4.8
Maximum Gradeability 30 deg

Capacities

Hydraulic System (l) 100
Fuel Tank (l) 70.2
Engine Lubrication (l) 9.5
Cooling System (l) 10