The AirTAC Airtac PB Pen-type Cylinder PB16X225SR is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 225mm stroke. Its slim round barrel and back cover are stainless steel, the M5×0.8 ports keep plumbing compact, and the fast, low-friction piston suits high-cycle small-part handling.
The AirTAC PB16X225SR is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel round barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while saving valuable space and payload on light end-of-arm tooling. Delivering 100.5 N of push force at 0.5 MPa, this model integrates an R axial air inlet for in-line plumbing and a built-in piston magnet for position sensing.
Equipped with a 225 mm stroke and an M5x0.8 port, the unit relies on a fixed TPU bumper at each end to decelerate impact. Because the rod is only 5 mm thick, it is built for coaxial thrust rather than side loading; over this long stroke, adding an external linear guide ensures smooth travel and prevents rod deflection. The bumper is not adjustable, so metering out the exhaust or adding an external shock absorber is recommended when moving heavy tooling mass at higher speeds.
| Model | Airtac PB Pen-type Cylinder PB16X225SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Elastic bumper (both ends) |
| Max standard stroke | Up to 300 mm |
Specifications follow the official AirTAC PB pen-size datasheet. Piston rod and barrel are stainless steel. Confirm bore, stroke and back-cover option against the product label before installation.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 N |
Values are taken from the AirTAC PB thrust table. Because pull acts on the rod-side annular area, pull force is always lower than push. Actual usable force is reduced by friction — size with a margin.
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| CB / U / R | Back cover: CB double clevis, U 90° side inlet, R axial inlet (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PSB (single-acting push), PTB (single-acting pull), PBD (double rod), PBJ (adjustable stroke), PBR (front-mount).
Actuates a cutting head guide on an electronics depaneling machine, utilizing the 225 mm stroke to traverse large circuit panels while the stainless body resists flux moisture.
Extends to tuck flaps on cartons moving along a packaging conveyor, where the 100.5 N push force at 0.5 MPa easily folds light cardboard without crushing the contents.
Drives a pipette rack in an automated clinical analyzer, using the integrated magnet with an electronic switch to confirm precise fluid draw positions across the long stroke.
Selecting the PB16X225SR provides the maximum standard thrust in this mini family, generating 140.7 N push and 126.9 N pull at the 0.7 MPa maximum operating pressure. If your application requires less force, stepping down to the 12 mm bore yields 56.5 N push at 0.5 MPa. Since 16 mm is the largest available bore in this series, users needing more power must switch to a different cylinder family entirely. For this specific configuration, confirm your ordering essentials: 16 mm bore, 225 mm stroke, M5x0.8 port, S magnet, and R axial inlet.
When sizing your load, plan for a safe working output of about 60 N, which assumes a 60% derating of the 100.5 N theoretical push at 0.5 MPa to account for seal friction. This equates to lifting roughly 5.1 kg vertically with a sane 2:1 safety margin. Note that a plain cylinder like this does not hold its position if air pressure drops or the valve is centered; the piston will drift, so an external rod lock is required for fail-safe holding.
Quick checklist
This double-acting cylinder delivers 100.5 N push and 90.7 N pull at 0.5 MPa, with a maximum output of 140.7 N push and 126.9 N pull at 0.7 MPa. The operating pressure ranges from 0.15-0.7 MPa, the proof pressure is 1.2 MPa, and the speed range is 50-800 mm/s.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters; it is not an adjustable air cushion, so external shock absorption may be needed for heavy high-speed loads. The built-in S magnet allows you to mount AirTAC reed or electronic switches directly onto the slim barrel for precise end-of-stroke detection.
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