AirTAC PTB Series Pen-Size Cylinders

PTB is AirTAC's single acting pen cylinder built to the JIS standard, with a stainless steel piston rod and barrel. It works the opposite way round to the more common PSB: air pressure pulls the rod IN, and the internal spring pushes it back OUT. With no air applied the rod sits extended, so PTB suits fail-extended functions such as spring-out stops, pins and parts held forward when air is lost. Bores run 6, 10, 12 and 16 mm, with strokes of 5, 10, 15, 20, 25, 30, 40, 50 and 60 mm - 60 mm is the ceiling for this series.

Speed range is 50-800 mm/s on every bore, temperature is -20 to +70 C, and the medium must be air filtered to 40 um or finer. Cushioning is none or an anti-collision pad depending on bore; there is no adjustable air cushioning. Ports are M5x0.8 or tube-fitting type depending on bore. The small bore gives fast response for relatively high-frequency duty, the rod guide is accurate, and the guide bearing needs no added lubricating oil. Front and rear covers cannot be dismantled.

The ordering code PTB{bore}X{stroke}[S]{rear cover}{mounting} covers the whole line-up. The magnet is optional - add S only if you will fit a CMSG, DMSG or EMSG sensor. Rear cover codes change where the air enters: R is an axial inlet, U is a radial inlet, and CB is a double clevis/lug type. Mounting accessories are FA front flange, LB axial bracket and CJ foot. Pressure figures for this single acting series are differentiated by bore - confirm the value for your code from the datasheet.