Airtac PB Pen-type Cylinder PB12X50RLB
The AirTAC Airtac PB Pen-type Cylinder PB12X50RLB is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 50mm 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
- Stroke50 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 PB12X50RLB
The AirTAC PB12X50RLB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It delivers a theoretical push of 56.5 N and pull of 46.7 N at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod provide corrosion resistance for damp production areas, while the lightweight body reduces payload on end-of-arm tooling. This configuration features an R axial air inlet and an LB mounting bracket for straightforward in-line plumbing and rigid attachment.
Air enters via the M5x0.8 port to drive the Ø5 mm rod with its M10x1.0 end thread. Operating pressure spans 0.15-0.7 MPa, yielding a maximum push of 79.1 N at 0.7 MPa. Travel speed reaches 50-800 mm/s, with a fixed TPU bumper at each end to decelerate the piston near the stroke limits. Because this bumper is non-adjustable, metering out the exhaust or adding an external shock absorber is recommended when moving heavier tooling at high velocities.
Airtac PB Pen-type Cylinder PB12X50RLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X50RLB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 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 PB12X50RLB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×50 | 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 PB12X50RLB Is Used
PCB Depaneling Jig
Actuates a cutting blade fixture to singulate printed circuit boards, utilizing the 56.5 N push force to cleanly shear routed panels without stressing adjacent components.
Carton Flap Folder
Tucks minor product flaps on a continuous packaging line, where the LB bracket secures the slim body and the fixed TPU bumper absorbs the repetitive 50 mm stroke impacts.
Parts Divert Gate
Extends a lightweight diverter arm to sort small plastic fasteners on a conveyor belt, relying on the SUS304 construction to withstand mildly humid factory environments.
Is the Airtac PB Pen-type Cylinder PB12X50RLB the Right Cylinder?
If your application requires less force, stepping down to the Ø10 bore provides 39.3 N of push at 0.5 MPa; if you need more thrust, the Ø16 bore offers 100.5 N. The Ø5 mm rod is designed strictly for coaxial thrust, so over the 50 mm stroke or under off-axis loads, incorporate an external linear bearing to prevent binding.
This model includes the LB foot bracket for bottom mounting and the R axial inlet for straight-line plumbing. It is supplied without a sensor magnet. Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered; the bumpers only slow the piston near the end of travel and do not lock the load, so an external rod lock is necessary 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 PB12X50RLB FAQ
At 0.5 MPa, this 12 mm bore cylinder provides 56.5 N of push and 46.7 N of pull. At the maximum operating pressure of 0.7 MPa, the push is 79.1 N and the pull is 65.4 N. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa and a speed range of 50-800 mm/s.
No, a standard double-acting PB cylinder will drift if air is lost or the valve is centered. The fixed TPU bumpers only decelerate the piston over the last few millimeters of stroke and do not act as a locking brake. An external rod lock or mechanical stop is required to hold a load safely.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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