
The AirTAC Airtac PB Pen-type Cylinder PB12X175R is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 175mm 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 PB12X175R is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency motion. It utilizes a slim SUS304 stainless steel round barrel and a 5mm piston rod, yielding a theoretical push force of 56.5 N and pull of 46.7 N at 0.5 MPa. Equipped with an R axial air inlet, the M5x0.8 port keeps plumbing perfectly in line with the body for neat manifold installations.
Because this 175mm stroke approaches the 200mm standard limit for a 12mm bore, the slender 5mm rod requires strict coaxial alignment to prevent binding. The cylinder relies on fixed TPU bumpers at both ends rather than adjustable air cushions, meaning external shock absorbers are recommended if moving substantial tooling mass at high cycle rates.
| Model | Airtac PB Pen-type Cylinder PB12X175R |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 175 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 | 56.5 N | 46.7 N |
| 0.7 MPa (max) | 79.1 N | 65.4 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. |
|---|---|
| 12 | Bore size in mm. |
| ×175 | 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).
Pushes a lightweight tooling pin to secure circuit boards during automated routing, where the 175mm stroke reaches across wide panels and the stainless body handles ambient factory humidity.
Extends a narrow flap to deflect small cartons on a conveyor line, using the 56.5 N extend force to push lightweight boxes without damaging their exterior.
Actuates a pipette mechanism for fluid dispensing, benefiting from the fast 50-800 mm/s speed range and compact pen-size profile that fits inside crowded analytical equipment.
When sizing this 12mm bore actuator, stepping down to the 10mm bore gives 39.3 N of push at 0.5 MPa, while stepping up to the 16mm bore provides 100.5 N.
Ensure your ordering essentials match the PB12X175R designation: 12mm bore, 175mm stroke, M5x0.8 port, no sensor magnet, and the R axial back cover inlet. Note that a standard PB body does not hold position if air pressure drops or the valve is centered; the piston will drift, so an external rod lock is necessary for fail-safe holding.
Quick checklist
At 0.5 MPa, the push force is 56.5 N and the pull force is 46.7 N. At the maximum operating pressure of 0.7 MPa, the push force is 79.1 N and the pull force is 65.4 N. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa and a speed range of 50-800 mm/s.
It uses fixed TPU bumpers at both ends to decelerate the piston over the last few millimeters, which are not field-adjustable. If cycling heavy tooling at high speeds, you should meter-out the exhaust or add an external shock absorber. Additionally, it does not hold its load if air is lost; the piston will drift, requiring an external stop for fail-safe positioning.
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