Guru Nanak Machine Tools

BONMAC Heavy Duty chucks refereed as HD, are suitable for normal working conditions. However these chucks will stand well ahead in Quality, Load carrying capacity and Life if compared with other competitive brands available in the market. Where other brands of chucks fail to give service, Bonmac chucks will give trouble free service for long period. The jaw-ways in body are of robust proportion which can withstand heavy loads. The diameter of screws is large enough to tolerate heavy cutting pressure and moreover large diameter of screws provide more contact area with threads of jaws. ACME threads of screws are very strong as the same have 29 degree taper. These do not break easily due to strength provided by large base of taper thread. Chucks from 160mm onward have , double type thrust bearings of robust proportions which provide great strength. Operating Key, Mounting Bolts & Inspection Report is provided with each chuck.

These are special 2-Jaw and 4-Jaw Self Centring Chucks but without scroll. This self centring mechanism is made with the help of one screw which moves both the jaws. These chucks usually have high height jaws with threaded holes. These jaws are kept soft so that machining or welding can be done on them. Special type of fixture can be mounted on the Jaws to suit special jobs. These fixtures are machined to make the same true. These chucks are not as accurate as scroll operated Self Centring Chucks, but these can tolerate heavy load. Operating Key, Mounting Bolts, Allen Key & Tap is provided with each Chuck.

These 4-Jaw Independent Chucks have larger Bore than normal Chucks. These are suitable where machine is light and the Job demands larger Bore. Operating Key, Mounting Bolts, Allen Key, Tap & Inspection Report is provided with each chuck.

BONET Extra Heavy Duty chucks refereed as EHD are manufactured to cope with toughest working conditions. These are capable of carrying heavy loads. The height of bodies though little more, but it helps not break under the loads. The jaw-ways in body are of robust proportion which can withstand heavy loads. The diameter of screws is large enough to tolerate heavy cutting pressure and moreover large diameter of screws provide more contact area with thread of jaws. ACME threads of screws are very strong as the same have 29 degree taper. These do not break easily due to strength provided by large base of taper thread. Alloy steel having Nickel, Chromium and Molybdnem is used in the manufacture of Screws, Thrust Bearings and Operating Key which are heat-treated to obtain wear resistance and toughness. Chucks from 160mm onward have double type thrust bearings of robust proportions which provide great strength. Operating Key, Mounting Bolts, Allen Key, Tap & Inspection Report is provided with each chuck.

BONET Extra Light Duty Chucks referred as ELD, have been designed specially for use on small precision machines which are light in weight and where chuck weight is critical for the machine. The bodies of 80mm and 100mm chucks are made out of steel and above 100mm from SG Iron. This property of being light weight helps to retain the precision of the bearings of the machine for long time. The vibrations are reduced to the minimum. Used within the capacity, these chucks are sturdy and reliable. Operating Key, Mounting Bolts, Allen Key, Tap & Inspection Report is provided with each chuck.