Airtac PB Pen-type Cylinder PB12X125SCB
The AirTAC Airtac PB Pen-type Cylinder PB12X125SCB is a double-acting pen-size (mini) air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PB Pen-type Cylinder PB12X125SCB
The AirTAC PB12X125SCB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel barrel and piston rod, offering excellent durability in damp or mildly corrosive environments without adding unnecessary bulk to your end-of-arm tooling. Delivering 56.5 N of push force at 0.5 MPa, it occupies tight jig spaces where standard bodies cannot fit.
This 12mm bore unit uses an M5x0.8 air port and a 5mm rod with an M10x1.0 rod-end thread. Because it includes the -S option, a built-in piston magnet allows position detection using AirTAC reed or electronic switches. The CB double clevis back cover accommodates pivoting loads, while fixed TPU bumpers at each end absorb impact during direction changes.
Airtac PB Pen-type Cylinder PB12X125SCB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X125SCB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 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 (Ø12mm)
| 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.
Model Code: Airtac PB Pen-type Cylinder PB12X125SCB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | 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 PB12X125SCB Is Used
PCB Depaneling Router
Actuates a routing blade guide for singulating printed circuit boards, where the stainless body resists flux residue and the compact size fits inside dense electronics assembly machinery.
Pouch Sealing Clamp
Drives a pivoting sealing jaw on a vertical form-fill-seal machine using the CB clevis, applying consistent pressure to close flexible film pouches at high cycling rates.
Lab Dispenser Positioning
Moves a micro-valve head over reagent trays in diagnostic equipment, utilizing the magnetic sensor to verify exact fluid drop dispensing coordinates.
Is the Airtac PB Pen-type Cylinder PB12X125SCB the Right Cylinder?
When sizing this model, compare its 56.5 N push at 0.5 MPa against adjacent bores: the Ø10 provides 39.3 N, and the Ø16 offers 100.5 N.
A plain double-acting cylinder drifts when air pressure is lost or the valve is centered, as the bumpers only decelerate near stroke end rather than locking the piston. If your process requires fail-safe position holding, integrate an external stop or rod lock. To order, confirm the 12mm bore, 125mm stroke, M5x0.8 port, S magnet, and CB clevis mount. The 5mm rod handles coaxial thrust well, but over this 125mm stroke, add a linear bearing if you encounter off-axis loading.
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 PB12X125SCB FAQ
This 12mm bore double-acting cylinder generates 56.5 N push and 46.7 N pull at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, it yields 79.1 N push and 65.4 N pull. It operates between 0.15-0.7 MPa, runs at speeds of 50-800 mm/s, and has a proof pressure of 1.2 MPa.
The CB suffix denotes a double clevis back cover designed specifically for pivoting linkages. Impact absorption relies on fixed TPU bumpers at both ends, which decelerate the piston over the final few millimeters. Because this is not an adjustable air cushion, high-speed cycles with heavy tooling mass require metering out the exhaust or adding an external shock absorber.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business 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 PB12X125SCB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.