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male H.H. Roberts Machinery Limited
1324 Matheson Blvd E., Mississauga, Ontario, Canada. L4W-2Z7, Fax 905-624-9065
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Mega BS-450 fully automatic horizontal bandsaw
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The Mega BS-450-HAS and GA Automatic or CNC Bandsaw, 18" Capacity


Mega BS450 automatic horizontal bandsaw cutting capacity chart
Each square = 1"


BS - 450 HAS.GA
Cutting Capacity
Ø460     460 x 407mm
Ø18"      18" x 6"
Bundle cutting
320 W x 230H   
13" x 9"
Biade Size
38 x 1.30 x 4,880
1 1/2" x 192"
Blade Speeds:  Standard
25, 32, 42, 55, 70, 80 M/Min
82, 105, 138, 180, 230, 260 FPM
Blade Speeds: Optoinal
Variable Speed 20 - 80  M/Min
Variable Speed 65-260 FPM
Shipping Volume
2,682 x 2,255 x 1,980mm
8.8'  x   7.4'   x   6.5'
Weight Net / Gross
3,100 / 3,500     
 
6820 / 7700 lbs
Main motor
7 1/2 Hp
Hydraulic motor
2 Hp

Standard features:
•  Precise cut off length setting.
•  Auto head-elevation and quick approach control.
•  Nesting fixture device for bundle cutting.
•  Cutting piece counter with auto-shut-off.
•  Multiple stroke counter for long pieces.( Standard 9- Time,)
•  Power-driven blade cleaning brush and coolant cleaning flush hose.
•  ldle wheel motion detector.
•  Carbide and roller blade guides.
•  Shuttle vise back-jaw feed method.( no need for front stop )
•  Unique split machine vise allows cutting to within as little as 2" of
      bar end automatically.(except HA models)
•  Unique two-way vise jaw
Standard Equipment:
•  Tools with tool box 1 set
•  7 ft (2M)long roller table with vertical rollers 1 set
•  Band-Cleaning wire brush 2 pcs
•  Band saw blade 1 pce
•  Instruction Manual 1 copy
Options:
•  Automatic chip conveyor.
•  Variable blade-speed drive.
•  Variable vise pressure system.
•  Hydraulic blade tension.
•  Additional spare roller table, wire brush, saw blade, work-area light, etc.

Features
PRECISE CUT OFF LENGTH SETTING:
A convenient digital readout control located at the operator's station provides easy selection of precise bar length requirement. The digital readout is calibrated in 0.10 mm or 0.01 IN increments and can be repositioned without interrupting the cutting cycle.
precision length cutting device on Mega automatic bandsaws
AUTO HEAD-ELEVATION AND QUICK APPROACH:
Raising the blade higher than necessary to clear the work for the next cut wastes time Head elevation is controlled automatically and no longer requires the operator's attention. A control device that senses the size of the workpiece permits the saw head to raise just high enough so the blade clears the work. This reduces index cycling time significantly.
controller for rapid approach and head elevation control on Mega automatic bandsaws
NESTING FIXTURE:
The hydraulically operated nesting fixture is designed for high-production multiple sawing of stacked bars. small rounds and tubing. The fixture contains vertical cyinders mounted on the index and front vises. lt holds stacked work firmly to assure accurate cuts and prevent center bars from turning.
Nesting fixture ( bundling attachment) on Mega automatic bandsaws
CUTTING PIECE COUNTER AND MULTIPLE STROKE COUNTER:
The cutting piece counter is used to preset the number of cuts required on automatic operation. When the counter reaches the preset number the saw automatically stops. The multiple stroke counter makes it possible to multiply the number of index cycles when pieces longer than 400 mm (16 in.) are required
parts and  multiple stroke counter on Mega automatic bandsaws
QUICK-ADJUSTING CARBIDE BLADE GUIDES:
For the replacement of the saw blade or the repositioning of the guide arms. two levers are incorporated in the saw guides to allow these operations to be carried out quickly and efficiently. (standard on 460/550 models) (optional on other models)
QUICK ADJUSTING CARBIDE GUIDES
IDLE WHEEL MOTION DETECTOR:
The device not only can protect the saw blade from damage if the blade overloads during cutting. but will also shutoff the machine if the blade should break.
idle wheel rotation detector for automatic stopping when blade breaks
HYDRAULIC BAND TENSION CONTROL:
During operation of the saw, the correct tension is automatically maintained. the tension is reduced when the saw is shut-off This procedure greatly increases blade life.
Hydraulic blade tension on Mega automatic bandsaws
QUICK-ACTION HYDRAULIC TWIN-VSE ( SPLIT VISE )  3-JAW CLAMPING:
Materials are firmly clamped on both sides of the saw blade by twin vises. Operating a single switch provides manual or automatic clamping and unclamping materials. These unique twin vises allow automatic bar feed and cutting to within as little as 50 mm of bar end
quick adjusting vises on Mega automatic bandsaws
UNIQUE TWO-WAY VISE JAW:
Both vise jaws on the rear work-carriage are actuated simultaneously, opening or closing, instead of the traditional one that is fixed on one side, moveable on another. This particular design ensures accurate indexing even with warped stock.
split vice for cutting to withing 50mm of the end of the bar stock on Mega automatic bandsaws

Options
GA NC control CNC control, vari-speed drive and Amplifying valve contol panels on Mega automatic bandsaws
Automatic chip conveyor
A power driven brush keeps the saw teeth free of chips. Rotating screw shaft in the coolant return drains chips of cutting fluid and propels dry chips by auger conveyor out through a discharge chute.
CHIP AUGER for Mega automatric bandsaws
Variable blade-speed drive.
DIGITAL VARIABLE SPEED DRIVE
Variable vise pressure system.
variable vise pressure system
Amplifying valve for auto-adjusting cutting feed-rate.
Amolifying valve for Mega automatic bandsaws
• Extra long 3.3M Power Roller Table
• Mitre cutting device
• Beam light to show blade cutting line.