Airtac PB Pen-type Cylinder PB16X250SR
The AirTAC Airtac PB Pen-type Cylinder PB16X250SR is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 250mm 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
- Stroke250 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X250SR
The AirTAC PB16X250SR is a double-acting JIS pen-size mini cylinder featuring a 16mm bore and 250mm stroke. It delivers a robust 100.5 N push and 90.7 N pull at 0.5 MPa, utilizing an M5x0.8 air port and an M10x1.0 rod-end thread. The SUS304 stainless barrel and piston rod provide excellent durability in damp or mildly corrosive environments, keeping the unit slim enough for tight jig layouts.
This specific configuration includes an R axial air inlet for clean in-line plumbing and a built-in piston magnet (-S) for position sensing. Operating at speeds up to 800 mm/s, it relies on a fixed TPU bumper at each end to decelerate the stroke. Because the rod is only 5 mm thick, maintaining coaxial alignment is critical over the 250mm extension to prevent binding.
Airtac PB Pen-type Cylinder PB16X250SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X250SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 250 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 PB16X250SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×250 | 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 PB16X250SR Is Used
PCB Depaneling Router
Extends a cutting tool guide over a 250mm span to separate large circuit boards, utilizing the 100.5 N push force to maintain steady positioning.
Package Sorting Diverter
Pushes lightweight parcels off a sorting line using the axial R inlet for flat in-line plumbing, handling rapid 800 mm/s cycling.
Lab Sample Dispenser
Moves a fluid nozzle across a 250mm testing zone where the SUS304 stainless body resists humidity and chemical exposure.
Is the Airtac PB Pen-type Cylinder PB16X250SR the Right Cylinder?
When sizing this actuator, the PB12X10 model offers a smaller 56.5 N push at 0.5 MPa, while there is no larger standard bore in the PB pen-size family, making this 16mm variant the maximum force option at 100.5 N. Plan for a safe working load of about 60 N (roughly 60% of the 0.5 MPa theoretical force) to account for seal friction. For vertical lifts, expect to raise about 5.1 kg safely with a 2:1 dynamic margin.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the bumpers only decelerate near the end of travel and do not act as a lock. If your application requires fail-safe position holding, you must incorporate an external stop or rod lock. Confirm your ordering essentials: 16mm bore, 250mm stroke, M5x0.8 port, S magnet, R axial inlet, and any required LB, FA, or CJ mounts.
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 PB16X250SR FAQ
The maximum operating pressure is 0.7 MPa. At 0.5 MPa, the push force is 100.5 N and the pull force is 90.7 N. At the maximum 0.7 MPa, the push force is 140.7 N and the pull force is 126.9 N.
Yes, the built-in magnet (-S) allows AirTAC reed or electronic switches to detect piston position. For cushioning, it uses fixed TPU bumpers at both ends which decelerate the last few millimeters of travel; they are not adjustable, so you should meter-out the exhaust or add an external shock absorber for heavy high-speed loads.
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