Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø10mm bore and 25mm stroke. A single air port drives the pull stroke; the built-in return spring resets the rod when air is released, so only one solenoid line is needed.
- BoreØ10 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typePull, single acting
- Rod threadM8×1.0
- ReturnSpring
- 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 PTB Single Acting Pen-Type Cylinder PTB10X25R
The AirTAC PTB10X25R is a JIS pen-size single-acting pull cylinder where air entering one M5x0.8 port retracts the rod, and an internal spring pushes it back out. It provides 23.5 N of net pull at 0.5 MPa and 36.7 N at 0.7 MPa. Because the return spring constantly opposes the air stroke, these figures already reflect the usable force after spring deduction. The R suffix designates an axial in-line air inlet, simplifying plumbing in tight assemblies.
Built with a SUS304 stainless steel barrel and a slim Ø4 mm rod, this mini actuator saves space and weight on light end-of-arm tooling. A fixed TPU bumper at each end decelerates the stroke over the last few millimeters. If your tooling carries real mass at higher speeds, meter-out the exhaust or add an external shock absorber, as the non-adjustable bumper has finite energy limits. For practical sizing, plan for a safe working load of about 14 N, which accounts for seal friction and smooth travel.
Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 25 mm |
| Acting type | Single acting, pull type (spring extend) |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Return | Return spring (pull by air) |
| Max standard stroke | Up to 60 mm |
The spring holds the rod extended; applying air retracts it, and removing air lets the spring push the rod back out. Forces below are the NET spring-deducted values from the AirTAC thrust table. Confirm against the product label before installation.
Net Pull Force (Ø10mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 23.5 N |
| 0.7 MPa (max) | 36.7 N |
These are the usable pull forces after the return spring is subtracted, taken directly from the AirTAC single-acting thrust table. Minimum operating pressure is set by the spring, so this model needs at least the lower pressure shown to move.
Model Code: Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 10 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| R | Back cover: R axial inlet (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PB (double acting), PSB (single-acting push), PBD (double rod), PBR (front-mount).
Where the Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R Is Used
Hold-Down Clamping
Keeps a workpiece clamped under spring pressure, using the 23.5 N air retraction to release the part for transfer.
Belt Tensioner
Maintains belt tension with the rod extended, pulling back only to slip a belt over a pulley during maintenance.
Retract-to-Open Gate
Holds a diverting gate closed by default and pneumatically pulls it open to route packages on a line.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R the Right Cylinder?
Selecting this 10 mm bore requires balancing the spring-extend behavior with your payload. It yields 23.5 N net pull at 0.5 MPa, sitting between the smaller Ø6 bore (7.1 N) and the larger Ø12 bore (33.1 N). If your application demands more retraction force, stepping up to the Ø12 is advisable. Note that a minimum pressure of 0.2 MPa is required before the piston overcomes the spring and moves.
Without live air, the spring holds the rod in the extended position, creating a fail-safe out state for hold-down or return-to-home tasks. The rod-end thread is M8x1.0. Confirm your ordering essentials: this configuration includes a 25 mm stroke, no sensor magnet, and the R axial back cover inlet.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 mm (single-acting limit)
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 0.7 MPa operating pressure.
- check Allow for spring force in the stroke direction.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PTB Single Acting Pen-Type Cylinder PTB10X25R FAQ
The net pull force is 23.5 N at 0.5 MPa and 36.7 N at 0.7 MPa. The internal return spring requires a minimum of 0.2 MPa to initiate retraction. If air pressure is lost, the spring pushes the rod to the extended fail-safe position.
It uses a fixed TPU bumper at each end to decelerate the stroke over the final few millimeters. It is not an adjustable cushion or a locking brake. For heavier tooling mass at mid-to-high speeds, add an external shock absorber or meter-out the exhaust.
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Related AirTAC PTB Pen-Size Cylinders
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