Airtac PB Pen-type Cylinder PB16X25SR
The AirTAC Airtac PB Pen-type Cylinder PB16X25SR is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 25mm 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
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X25SR
The AirTAC PB16X25SR is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It yields a theoretical push of 100.5 N and pull of 90.7 N at 0.5 MPa, driven through an M5x0.8 air port. The SUS304 stainless barrel and piston rod provide reliable durability in damp or mildly corrosive work areas, while the slim profile saves valuable space on tight jigs. This specific configuration includes an R axial inlet for in-line plumbing and a built-in piston magnet.
Because the unit features the S magnet code, it supports position detection using AirTAC reed or electronic switches. Deceleration relies on a fixed TPU bumper at each end rather than an adjustable air cushion. This bumper only absorbs impact over the final few millimeters of travel, so when moving heavy tooling at high velocities you should meter-out the exhaust or install an external shock absorber to prevent bottoming out.
Airtac PB Pen-type Cylinder PB16X25SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X25SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 25 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 PB16X25SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×25 | 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 PB16X25SR Is Used
PCB Depaneling Router
Provides the 100.5 N extend thrust to plunge a small routing spindle through FR4 material, while the slim stainless body fits between dense fixture rails.
Carton Flap Folder
Extends 25 mm to tuck minor flaps on small pharmaceutical cartons, using the R axial inlet to keep pneumatic plumbing perfectly flush against the machine frame.
Lightweight Parts Lift
Raises delicate plastic caps weighing up to 5.1 kg vertically in a pick-and-place system, relying on an external linear bearing to keep the Ø5 mm rod perfectly coaxial.
Is the Airtac PB Pen-type Cylinder PB16X25SR the Right Cylinder?
When sizing this actuator, plan for a safe working load of roughly 60 N, which accounts for seal friction by loading the cylinder to about 60% of its 100.5 N theoretical push at 0.5 MPa. For vertical lifts, this equates to raising about 5.1 kg safely with a 2:1 margin. If you need less force, stepping down to the Ø12 bore yields 56.5 N of push at 0.5 MPa, whereas this Ø16 represents the largest standard option in the family at 100.5 N. Remember that the thin Ø5 mm piston rod is designed strictly for coaxial thrust, so over this 25 mm stroke you must avoid side loading and guide the load externally if necessary.
A plain double-acting cylinder like this will not hold its position if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the end of the stroke rather than locking it. For fail-safe holding, integrate an external rod lock. To order, confirm your requirements for the 16 mm bore, 25 mm stroke, M5x0.8 porting, S magnet for sensing, and R axial back cover inlet.
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 PB16X25SR FAQ
At 0.5 MPa the push force is 100.5 N and the pull force is 90.7 N. At the maximum operating pressure of 0.7 MPa, the push is 140.7 N and the pull is 126.9 N. The operating pressure range is 0.15-0.7 MPa, with a speed of 50-800 mm/s.
It uses a fixed TPU bumper at each end to decelerate the piston over the final few millimeters, which is not field adjustable or capable of locking the load. The built-in S magnet allows you to track position using AirTAC reed or electronic switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
Request a Quote for Airtac PB Pen-type Cylinder PB16X25SR
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.