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Saw Head Frame
The rigid 'C' section frame carries the mountings for the two band wheels, heavy duty worm drive gear reducer, the band drive motor and saw guide arm mounting supports.
Band Wheels & Drive System
The band wheels are cast iron for long, productive life. The deflection free 1.38 inch (35 mm.) wheel spindles ensure the wheels run true regardless of tension stress or cutting loads. The spindle assemblies incorporate tapered roller bearings for greater rigidity and long service life. The wheel tracks the blade so that the back of the band is contacts the wheel flanges to support the band. The drive motor is coupled to the transmission through a variable speed pulley.
Wide Blade (1 1/4 inch, 34mm)
The wider blade, for this capacity machine, can make full utilization of the large band drive motor (5 hp, 3.7 kW) when cutting all shapes and alloys.
Drive Wheel Transmission
The drive wheel transmission is designed and built by Amada to provide high efficiency speed reduction, which requires no external cooling, to deliver more power to the large diameter drive shaft. This shaft ensures that this developed torque is transferred to the blade with no strobing, enabling the machine to efficiently cut high alloys as well as free machining materials.
Pressure/Flow Feed Control
The independent pressure and flow controls in series ensure the optimum cutting rate can be obtained regardless of section or alloy being cut. The pressure control determines the cutting force applied to the blade and the flow control sets the maximum fall rate of the head. For example for difficult to machine materials the pressure is set higher than free machining alloys and the flow is set lower, as shown on the escutcheons above the control knobs.
Idler Wheel Motion Detector
The wheel motion detector will turn off the blade drive in the case where a blade breaks or is jammed in the work piece. This feature also prevents premature wear on the drive wheel from a stalled band.
NC Control of Cutting and Auto Cycle
The NC index control provides greater flexibility and expanded capabilities compared to a The controller enables the operator to specify the index home position - forward and clamped or at the index position and open. The controller also determines the speed of the index vise motion forward and reverse. It provides independent ramp cycles for the forward and rear traverse. The speed ramp up and down for moving the work piece is slower when it is positioning the work piece than when it is moving without work. This feature provides more accurate indexing of the work piece.
Smart Multiple Index
The machine control has the capability to make multiple full length index strokes until the length remaining to index is less than the full index stroke (15.8 in., 400mm.) the last index stroke is the remaining length.
Band Deviation Monitor ®
This patented cutting control device can reduce scrap by warning when the blade is no longer cutting within the operator's settings for deviation. The allowable deviation limit is set by the operator independently for each direction. The digital deviation indicator will flash when the blade deviation exceeds either maximum. If the deviation continues to exceed the preset value the NC controller will stop the cutting, raise the saw head and display the exceeded deviation value.
Split Front Vise
The work holding vise is split so that it clamps the work piece on both sides of the cutting plane. This additional support in front of the cutting plane minimizes the burr on the cut pieces.
Powered Chip Conveyor
The powered chip conveyor auger automatically removes the saw chips from the saw while draining the cutting fluid back into the fluid reservoir. The automatic chip conveyor greatly reduces cleanup time and enables the machine to run longer without operator cleanup.
  Cutting capacity
  Single Cutting
  Round work (Diameter)*
  250 mm {9.84 in.}
  Rectangular work (H X W)*
  250 x 300 mm {9.84 x 11.81 in.}
250 x 270 mm {9.84 x 10.63 in.}
when machine is equipped with optional runout detector
  Stack cutting (H x W)
  50 x 150mm {1.97 x 5.91 in.} to 150 x 150 mm {5.91 x 5.91 in.}
Saw blade motor
HFA-250: 2.2 kW {3.0 HP}, 4P
HFA-250W: 3.7 kW {5.0 HP}, 4P
Hydraulic pump motor
0.75 kW {1.0 HP}, 4P
Cutting fluid pump motor
0.18 kW {0.24 HP}, 2P
Power source
  3-phase, 400 VAC:± 10%, 50 Hz
Operating: 0 to 40°C {32 to 104°F}
Nonoperating: -5 to 50°C {23 to 122°F}
  Operating: 30 to 90%
Nonoperating: 10 to 95% (noncondensing)
   Control circuit voltage
  AC 100V, DC 24 V, DC 12V
  Saw blade
Dimensions (W x T x L)
  HFA-250:25 x 0.95 x 3505 mm {1 in. x 0.037 in. x 11 ft 6 in.}
HFA-250W:32 x 1.066 x 3505 mm {1-1/4 in. x 0.042 in. x 11ft 6 in.}
  HFA-250: 20 to 80 m/min {66 to 262 fpm}, stepless shift
HFA-250W: 24 to 90 m/min {79 to 295 fpm}, stepless shift
Tension control
  Hydraulic powered, with saw blade breakage and slip detection functions
  Insert 4-point support, bearing twist
  Bearing, seesaw support
   Vise operation
Hydraulic full-stroke cylinder
  Cutting fluid
  Tank capacity
  85 liters {22.4 US gal}
  Pump type
  Centrifugal pump
  Pump capacity
  20 liters/min {5.3 US gallmin}
*When automatic operation is to be performed, work must be at least 30 mm {1 :18 in.} in diameter or width.
Tank capacity
30 liters {7.9 US gal}
Pump type
Variable-discharge vane pump
Pump capacity
15 liters/min {3.9 US gal/min}
Pressure setting
2.7 MPa {27 kgf/cm2 or 384 psi}
  Saw Blade control
Hydraulic automatic rise (automatic stop at upper limit)
Inching up by pushbutton operation
Rise height setting
Automatic setting with quick approach feeler
Rapid approach with quick approach feeler
Inching down by pushbutton operation
Depth-of-cut control
Hydraulic pressure-flow control valve
Slip detection
Automatic stop at overload, jamming, or breakage
  Work feed
Type (capacity)
Hydraulic shuttle type, maximum stroke length of 400 mm {15.75 in.}, standby position selectable
Remnant length
[for clamp clearance of 10 mm {O.4 in.}]
Single cutting: 57 mm {2.24 in.}**
Stack cutting: 188 mm {7.40 in.}
  Chip disposal
  Chip conveyor (automatic hydraulic screw type)
  Table height
  700 mm {27.6 in.}
   Saw blade twist angle
   Allowable loading mass on machine
  1500 kg {3310 lb}
   Machine dimensions(Wx D x H)
  2035 x 2370 x .1772 mm {80.1 x 93.3 x 69.8 in.}
   Machine mass
Approx. 1500 kg {3310 lb}
**When the machine is equipped with an optional head-end positioning function. the remnant must be 150 mm {5.91 in.}or longer when work with a diameter or height of less than 12 mm {O.47 in.} is to be fed.
  Note: Specifications may change without notice at the sole discretion of Amada's Engineering Department
Copyright © 2011 Tru-Cut Tools (I) Pvt. Ltd.