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H.H. Roberts Machinery Limited
1324 Matheson Blvd E., Mississauga, Ontario, Canada. L4W-2Z7, Fax 905-624-9065

Mega H-5042-A Double Column Heavy Duty
Automatic 16 1/2" Band Saw
Mega Automatic band saw model H5042A twin column
Mega bandsaws logo

H-5042A H-5042GA
16 1/2" round,
20" x 16 1/2" rectangular
fully automatic twin column bandsaw.

Cutting capacity
Ø420      rect 500 x 420mm
Ø16.5"     rect  19.68" x16.5"
Blade size
41 x 1.3 x 5100mm
1.6" x 200" x 50 thou
Bundle cutting
210 x 368
8" x 14.4"
Blade speed standard
25, 32, 42, 55, 70, 80 M/minr
optional vari speed 20-100 FPM 
Blade speed optional
82, 105, 138, 180, 230, 260 M/min
optionally vari speed 82-260 FPM
Blade 5.6 Kw   Hydraulics 0.75Kw
Blade 7.5 Hp, Hydraulics 1 Hp, Coolant 1/8 Hp
Shipping Volume
2680mm L x 2150 W x 2000 H
105.5" L x 84.6" W x 78.8" H
Weight Net / Gross
2,900 /  3,350  Kgs
6,380  / 7,370 lbs

Standard Features
•  Precise cut off length setting.
•  Auto head-elevation and quick approach control.
•  Nesting fixture device bundele cutting.
•  Cutting piece counter with auto-shut-off.
•  Multiple stroke counter for long pieces.
      ( Standard 9 Times )
•  Power-driven blade cleaning brush and coolant
      cleaning flush hose.
•  Carbide and roller blade guides.
•  Hydraulic shuttle vice back- jaw feed method.
•  Hydraulic bland tension control.
•  Work-area light.
•  Automatic chip conveyor.
•  Two-way open rear vice jaws to insure precise
      bar-feed repeatability even in cutting a little bit
      warped / surface rough works.
•  Unique split vice allows automatic cutting
      to within as little as 50 mm of bar end.
Standard Equipment
•  Tools with tool box
1 set
• 2M ( 7 FT ) long roller table with vertical roller
1 set .
•  Band-Cleaning wire bursh.......
2 pcs
•  Band saw blade...................
1 pc
•  Hydraulic blade tension.........
•  Automatic chip conveyor.......
•  Instruction manual and Parts list
1 copy
•  Variable blade speed drive see below
•  Variable vise pressure system
•  Amplifying valve for auto-adjusting cutting feed-rate.
•  GA NC control


QUALITY DESIGN - Skilful engineering and imaginative design give every MEGA Band Saw exceptional cutting capacity.

• A completely automatic cutting cycle synchronised with an automatic bar-feed mechanism and stock clamping action
       provide accurate repetitive cutting.

• An excellent blade tensioning system and guides keep the blade aligned and under constant load at all times.

• A hydraulically controlled cutting feed maintains a constant cutting rate regardless of the workpiece cross section.

• A power-driven brush continually flushed by a cutting fluid spout keeps the blade and saw guides free of chips for
      smoother cutting.
• A quick approach and normal feed rate selector are equipped to cause the blade to quickly descend into position.

• A cutting piece counter is used to preset the number of cuts required during automatic operation.

• Two hydraulically operated vises, one a fixed front vise, the other an indexable travelling vise in the rear side.

• The hydraulically operated nesting fixture is designed for high production multiple sawing of stacked bars, small
      rounds and tubes. The fixture contains vertical cylinders mounted on the index and front vises. It holds stacked
      work firmly to prevent vibration.
• A cutting length presetting device is built into the saw to preset the required cutting length of a workpiece during
      automatic operation. It is simply operated by means of a read-out digital device.

• Multiple stroke preset counter: when a cutting length of more than 16 is required, the number of strokes can be
      preset on this counter. The counter is capable of being set to a maximum of three strokes 48 (1200 mm )
      ( nine strokes 144 is optional )

SAFETY DESIGN- Every MEGA Band Saw is factory equipped with:

• Safety and thermal overload switches.

• Well guarded blades and wheel covers.

• Saw Blade shuts off automatically when cutting is complete.

• Low voltage & zero voltage controls.

• A blade breakage sensor / motion detector provides automatic shutoff.

length setting device for Mega automatic bandsaw • Precise cut legth 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. Repeatability is about 5 thou.
  • Automatic head elevation limiter and rapid approach control:
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.
rapid approach limiting device for Mega twin column automatic bandsaw
nesting fixture on Mega automatic bandsaws • Nesting fixture:
The hydraulically-operated nesting ficture 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.
  • Cutting piece coutner 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 400mm (16in) are required.
multi stroke setting device for Mega automatic bandsaw
quick adjusting carbide guides on the mega twin column automantic bandsaws • Quick adjusting carbide saw 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. (Hydraulic carbide guides on 550/700 models)
  •  Idle wheel rotation detector:
This 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 broken blades
Hydraulic blade tension control on Mega automatic bandsaws • Hydraulic blade 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.
  • Quick action h hydraulic twin vice (split vice) with 3-jaw clamping:
Materials are firmly clampled on both sides of the saw blade by twin vices. Operating a single switch provides manual or automatic clamping and unclamping materials. These unique twin vices allow automatic bar feed and cutting to within as little as 50mm of bar end.
special hydraulic vise allowing cut-off to with 50mm of end of stock
two way vise jaws for warped stock • Unigque self aligning vise jaws:
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.
  •  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 disharge chute.
Automatic chip auger on Mega automatic bandsaw
showing the variable speed drive control and the NC control
and the controls for the amplifying valve option. .
Showing the variable speed drive, CNC, and hydrualic amplifying valve control


Showing the controls for the variable pressure vise system

vise pressure control valves on Mega twin column saws
Specifications subject to change without notice for improvement and modification.