CNC Lathe Chucks - Do’s and Don’ts

 DO's

Always clamp the component in the middle stroke of the Base jaw / Master jaw.

Perform proper boring of Soft Jaws

 DO's


Ensure a gap of 0.5 mm between the wedge and the chuck body inner face, when jaws are at radially outer most position.

DO's

Use proper Top jaws
Height of top jaws should be less than its length.
Ensure at least two screws are used to attach the top jaws with master jaws.


DO's
Do periodic maintenance

• Remove the chuck from machine and clean it properly with kerosene and lint free cloth. (frequency every 25000 cycles.)
• Replace the damaged or worn out parts with new one.
• Ensure the smooth working of sliding parts.

 DO's




Ensure that the Jaw Clamping Screw does not touch the base jaw

 DON'Ts




Jaw clamping screw should not touch the base jaws

DON'Ts

• Don’t attempt to redesign the chuck
• Do not attempt to braze or weld any internal parts of the chuck.
• Do not use welded top jaws as this will cause imbalance on the Chuck.
• Do not attempt to modify the design of the chuck.
• Don’t use the chuck after removing the front cover. 

Don’t tighten the screws beyond specified limit.

Don’t use excessive leverage (pipe) to tighten the chuck mounting screws, and top jaw clamping screws.  

Don’t use long screws for chuck clamping and top jaw clamping.

Don’t exceed recommended parameters of chuck.
Don’t exceed the recommended draw bar pull of chuck.   
Don’t exceed the recommended R.P.M. of the chuck.

Don’t use steel hammer on any parts of the chuck
Instead, use Nylon Hammer or Aluminum shaft