CHUCK ACCESSORIES

July 05, 2018


AIR FEED TUBE (AFT)

Precision air chucks receive air supply from air feed tubes - AFT.​

Air Feed Tube supplies air to a rotating air chuck through operation. There are several types of AFTs (see below). Custom tubes may be ordered as well.

Standard models are:

BC/2 - has 2 airways.

NBC/3 - has 2 airways, 1 coolant passage and 1 drain port.

We do offer AFT system with flexible air tube. please see photos below.

BC/2 type - AFT

Two airways + through-hole coolant valve

NBC/3 type - AFT

Two air ports and through-hole coolant application

BC/2 type – AFT

Two ports without through-hole coolant application

NBC/3 S Flex – AFT

Two air ways, 1 coolant passage for high speed operation

BC/2 Flex – AFT

2 air ways for high speed operation

NBC/3 S – AFT

Two airways, 1 coolant passage for liquids (high pressure)

NBC/5 S Flex – 5 air ways, 

1 coolant passage for high speed, 1 drainage, 1 oil mist lubrication port

NBC/2 S Flex – 2 air ways, 

1 coolant passage for high speed, 

1 drainage, 1 oil mist lubrication port​

Air Feed Device - AFD 85mm DIA. 

2 air ways, suitable for 4th and 5th Axis, rotates at low speed

This is a cost effective AFT solution. There are two ports for opening and closing the chuck. There is a 6mm through hole for air passage only. Relatively low speed of 1500 RPM Maximum. Very small configuration, designed for machine space constraint​.

  • Air feed tube with back ports for small machines


    Button

  • Slide title

    Very simple and short air feed tube

    Button

  • Air feed tube with back air ports

    Air feed tube with back ports connected to the air chuck

    Button
Air Feed Tube with four ports

That is another version of flexible AFT model: NBC/3 S Flex with 34mm shaft per customer spec.

PML-PAL offers additional multiport air feed tubes for air chucks with the following features. There are models with 4, 5, and 6 air ways, such as, coolant passage for high speed, and AFT self-lubricating port.


We also make air feed device (AFD) showing above for rotary table and 4th/ 5th axes. 2 air ways. Coolant passage is available.

Ordering an AFT

When ordering an AFT, please specify the following:LR=LS (spindle length) + (7~11mm)* + E(chuck adaptor) + D(AFT adaptor) + C (S.R Bushing) + S(Max. 5mm)*Dimension differs according to the type of chuck: 7mm for types up to 5", and 11mm for types 6" and above.

Air Feed System

Below is a drawing for a whole air supply system for air chuck mounted on a lathe machine. It includes Air feed Tube (letter A) on/off valve (PML) and air pressure regulator on the bottom.