Airtac PB Pen-type Cylinder PB6X25SRLB
The AirTAC Airtac PB Pen-type Cylinder PB6X25SRLB is a double-acting pen-size (mini) air cylinder with a Ø6mm 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.
- BoreØ6 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8
- 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 PB6X25SRLB
The AirTAC PB6X25SRLB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It delivers a 14.2 N push and 10.6 N pull at 0.5 MPa, utilizing a slim SUS304 stainless steel round barrel and piston rod to resist damp or mildly corrosive environments. This build saves valuable space and payload on light end-of-arm tooling where larger actuators cannot fit.
Equipped with a built-in magnet (-S), this unit supports AirTAC reed or electronic switches for precise position detection. The R axial inlet keeps plumbing in-line, while the LB mounting bracket provides a robust attachment point. It features an M5x0.8 port and a fixed TPU bumper at each end that decelerates the piston over the final few millimeters of travel.
Airtac PB Pen-type Cylinder PB6X25SRLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X25SRLB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 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 60 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 (Ø6mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 14.2 N | 10.6 N |
| 0.7 MPa (max) | 19.8 N | 14.8 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 PB6X25SRLB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 6 | 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 PB6X25SRLB Is Used
PCB Pick-and-Place
Drives a tiny vacuum gripper to lift and position delicate electronic circuit boards within a dense SMT assembly machine.
Lab Dispenser Actuation
Moves a micro-valve for precise chemical reagent dosing in automated analytical laboratory equipment.
Small Carton Flap Folding
Tucks in minor flaps on lightweight pharmaceutical cartons moving through a high-speed packaging line.
Is the Airtac PB Pen-type Cylinder PB6X25SRLB the Right Cylinder?
When sizing this actuator, plan for a safe working load of about 9 N (roughly 60% of the 14.2 N theoretical push at 0.5 MPa) to account for seal friction and smooth travel. This equates to lifting approximately 0.7 kg vertically with a sane 2:1 safety margin. If your task requires less force, step down to the Ø4 bore (6.3 N push); if you need more power, step up to the Ø10 bore (39.3 N push).
Confirm your ordering essentials: 6 mm bore, 25 mm stroke, M5x0.8 port, S magnet, R axial inlet, and LB mount. Note that a plain cylinder drifts when air is lost or the valve is centered, so an external stop or rod lock is required for fail-safe load holding. Additionally, the slender Ø3 mm rod is built for coaxial thrust, so add an external guide if handling off-axis loads.
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 PB6X25SRLB FAQ
At 0.5 MPa this 6 mm bore cylinder provides 14.2 N of push and 10.6 N of pull. At the maximum operating pressure of 0.7 MPa, the force increases to 19.8 N push and 14.8 N pull. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s.
The cushioning is a fixed TPU bumper at each end that absorbs impact over the last few millimeters and cannot be field-adjusted. For high-speed cycles with real tooling mass, meter-out the exhaust or add an external shock absorber. The cylinder will not hold a load if air pressure is lost; you must use an external rod lock for fail-safe positioning.
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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
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