
The AirTAC Airtac PB Pen-type Cylinder PB10X20CB is a double-acting pen-size (mini) air cylinder with a Ø10mm bore and 20mm 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 PB10X20CB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency small-part motion. It delivers a theoretical push of 39.3 N and a pull of 33 N at 0.5 MPa, driven through an M5x0.8 air port. The slim SUS304 stainless round barrel and screwed-in covers provide excellent durability in damp or mildly corrosive environments while saving critical space and payload on light end-of-arm tooling.
This 10 mm bore unit features a 4 mm piston rod with an M8x1.0 rod-end thread and a CB double clevis back cover for pivoting loads. It relies on a fixed TPU bumper at each end to decelerate the stroke over the final few millimeters. Because the bumper is not adjustable, metering out the exhaust or adding an external shock absorber is recommended when cycling real tooling mass at higher speeds.
| Model | Airtac PB Pen-type Cylinder PB10X20CB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 20 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 200 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 | 39.3 N | 33.0 N |
| 0.7 MPa (max) | 55.0 N | 46.2 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. |
|---|---|
| 10 | Bore size in mm. |
| ×20 | 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 small grippers on electronic assembly lines where the 39.3 N push force and slim profile fit tight robotic end-of-arm tooling.
Pivots a light sealing arm via the CB double clevis to close thin packaging flaps at high cycling speeds without occupying much frame space.
Pushes small vial routing gates in diagnostic machinery, benefiting from the SUS304 stainless build against humid or mildly corrosive lab environments.
When sizing this actuator, plan for a safe working load of about 24 N (roughly 60% of the 39.3 N push at 0.5 MPa) to account for seal friction and smooth travel. For vertical lifts, this translates to lifting about 2 kg safely with a 2:1 margin. If you need less force, stepping down to the 6 mm bore yields a 14.2 N push; if your jig requires more thrust, stepping up to the 12 mm bore provides a 56.5 N push at the same 0.5 MPa pressure.
Remember that a plain PB cylinder does not hold its position if air pressure is lost or the valve is centered, as the piston will drift and the bumper only decelerates near the end of the stroke. For fail-safe holding, an external stop or rod lock is required. To finalize your build, confirm the 10 mm bore, 20 mm stroke, M5x0.8 port, the CB double clevis, and whether you need the optional LB, FA, or CJ mounting brackets.
Quick checklist
At 0.5 MPa, the push force is 39.3 N and the pull force is 33 N. At the maximum operating pressure of 0.7 MPa, the push is 55 N and the pull is 46.2 N. The operating pressure range is 0.15-0.7 MPa, with a speed range of 50-800 mm/s and a proof pressure of 1.2 MPa.
The CB back cover is a double clevis designed specifically for pivoting loads. End-of-stroke deceleration is handled by a fixed TPU bumper at each end, which is not adjustable. For high-speed pivoting mass, you should meter-out the exhaust or add an external shock absorber, as the bumper only cushions the last few millimeters of travel.
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