Airtac PB Pen-type Cylinder PB16X125CB
The AirTAC Airtac PB Pen-type Cylinder PB16X125CB is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 125mm 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.
- BoreØ16 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X125CB
The AirTAC PB16X125CB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact automation. It delivers a robust 100.5 N push and 90.7 N pull at 0.5 MPa, utilizing a slim SUS304 stainless steel barrel and a 5 mm rod to fit tight jig spaces while resisting damp environments. The CB suffix equips the rear cover with a double clevis for pivoting loads, and fluid is supplied via an M5x0.8 port.
This 125 mm stroke unit relies on a fixed TPU bumper at each end to decelerate motion across its 50-800 mm/s speed range, rather than an adjustable air cushion. Because the bumper only absorbs energy in the final millimeters, high-speed tooling mass requires metering out the exhaust or adding an external shock absorber. Plan for a safe working load of roughly 60 N (about 60% of the 0.5 MPa push force) to account for seal friction and smooth travel.
Airtac PB Pen-type Cylinder PB16X125CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X125CB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 125 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.
Theoretical Output Force (Ø16mm)
| 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.
Model Code: Airtac PB Pen-type Cylinder PB16X125CB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | 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).
Where the Airtac PB Pen-type Cylinder PB16X125CB Is Used
Diverter Gate Actuation
Swings a lightweight sorting flap on a packaging line using the CB clevis to pivot smoothly, handling small product routing with 100.5 N of extend force.
PCB Test Fixture
Drives a probe head down onto electronic boards within a dense test bench, where the slim 16 mm barrel saves valuable vertical space.
Tote Push-off Arm
Ejects small plastic totes from an accumulation roller track, utilizing the 125 mm stroke and stainless construction to withstand mildly humid warehouse conditions.
Is the Airtac PB Pen-type Cylinder PB16X125CB the Right Cylinder?
When sizing this family, stepping down to the 12 mm bore yields a 56.5 N push at 0.5 MPa, while moving up is not available as 16 mm is the largest standard diameter. This 16 mm model provides the maximum thrust in the series, generating 140.7 N at the 0.7 MPa ceiling. To finalize your order, confirm the 125 mm stroke, M5x0.8 port, M10x1.0 rod-end thread, and the CB double clevis. Note that a plain cylinder drifts when air is lost or the valve centers; the bumper decelerates but does not lock, so specify an external rod lock for fail-safe holding.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Slim pen body vs. a standard round cylinder
- ✓ Back cover: CB / U / R inlet direction
- ✓ Magnet (S) for sensors?
- ✓ Mounting: LB / FA / CJ or front thread
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.7 MPa operating pressure.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
- check Fit dust caps to ports during long-term storage.
- check Installation by qualified personnel per AirTAC docs.
Airtac PB Pen-type Cylinder PB16X125CB FAQ
This 16 mm bore double-acting cylinder generates a push of 100.5 N and a pull of 90.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push is 140.7 N and the pull is 126.9 N. It operates at 0.15-0.7 MPa with a speed range of 50-800 mm/s.
No, a standard PB cylinder will drift downward if air is lost or the directional valve is centered. The fixed TPU bumper only decelerates the piston near the stroke end and does not function as a brake. An external rod lock or mechanical stop is required to safely hold a suspended load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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