Recommended torque for jaw screws should be applied while tightening the top jaws with master jaws.
Use screws of reputed make only. (Eg. TVS, Unbrako). Length of the screw should be as per GMT standards. Write to esales@gmt.co.in for a free electronic copy of GMT PHNC Instruction Manual.
RECOMMENDED TORQUE
SCREW SIZE TIGHTENING TORQUE
M8 39 Nm
M10 77 Nm
M12 110 Nm
M16 220 Nm
M 20 400 Nm
Important Instructions:
If you use screws that are longer than recommended size, the top jaw will not clamp with master jaw, as the clamping screw will rest at the bottom face of master jaw T-Slot. This will result in master jaw breakage.If the soft-jaws are purchased from outside source, ensure that the jaws meet GMT standards.
Click here for further information and instructions on chuck maintenance. or visit our website www.gmt.co.in
Use screws of reputed make only. (Eg. TVS, Unbrako). Length of the screw should be as per GMT standards. Write to esales@gmt.co.in for a free electronic copy of GMT PHNC Instruction Manual.
RECOMMENDED TORQUE
SCREW SIZE TIGHTENING TORQUE
M8 39 Nm
M10 77 Nm
M12 110 Nm
M16 220 Nm
M 20 400 Nm
Important Instructions:
If you use screws that are longer than recommended size, the top jaw will not clamp with master jaw, as the clamping screw will rest at the bottom face of master jaw T-Slot. This will result in master jaw breakage.If the soft-jaws are purchased from outside source, ensure that the jaws meet GMT standards.
Click here for further information and instructions on chuck maintenance. or visit our website www.gmt.co.in
What can go wrong, if I don't use a torque wrench?
ReplyDeleteHow do I tighten to the approximate torque without a torque wrench?
You can't approximate torque by feel. Over lubrication, nicked threads, non-parallel mating surfaces can all alter the 'feel' when you are tightening down bolts and to 'approximate the feel' these variables render it almost impossible.
DeleteGo for a used torque wrench… that should help
does GMT include a torque wrench as part of the supply when a chuck is ordered?
ReplyDeleteGMT does not supply torque wrench when chuck is ordered...however we send an Instruction Manual which has all the details.
DeleteGo to this link to download an electronic copy of the instruction manual
http://www.gmt.co.in/tech_support.htm
i have an imported chuck which came with the machine do you have a replacement for kitagawa ?
ReplyDeleteYes..we do have replacement for their standard chucks...but I need more details about your existing chuck before i can comment...you can email the details to esales@gmt.co.in
Delete