Airtac PTB Single Acting Pen-Type Cylinder PTB10X20R
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB10X20R is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø10mm bore and 20mm 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
- Stroke20 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 PTB10X20R
The AirTAC PTB10X20R 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 the 0.7 MPa maximum. Because the return spring constantly opposes the air stroke, these figures already reflect the usable force after spring deduction.
This configuration uses an R axial inlet for inline plumbing and features a slim SUS304 stainless body with a fixed TPU bumper at each end. If air pressure drops, the spring forces the rod into the extended position, creating a fail-safe out state for hold-down or return-to-home tasks. The integrated bumper only decelerates the last few millimeters of travel, so metering out the exhaust is advised when cycling faster with heavier tooling.
Airtac PTB Single Acting Pen-Type Cylinder PTB10X20R Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB10X20R |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 20 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 PTB10X20R
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 10 | Bore size in mm. |
| ×20 | 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 PTB10X20R Is Used
Hold-Down Clamping
Keeps a workpiece secured by default with the rod extended, using a single air line to retract and release the clamp during machining cycles.
Wire Belt Tensioner
Maintains steady pulling tension on a belt or wire assembly, automatically snapping back to the extended home position when vented.
Retract-To-Open Gate
Holds a small diverter gate closed via spring force, pulling it open only when pressurized to reroute lightweight packages.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB10X20R the Right Cylinder?
When sizing this 10 mm bore, note its 23.5 N net pull at 0.5 MPa is substantially less than the 65.0 N available from the 16 mm bore at the same pressure. Dropping down to a 6 mm bore yields just 7.1 N, making the 10 mm the middle ground for light pulling. A minimum of 0.2 MPa is required to overcome the spring before any motion occurs, and the rod safely defaults to the extended position on air loss.
For practical deployment, plan for a safe working load of roughly 14 N, which is about 60 percent of the 0.5 MPa rating, ensuring smooth travel against seal friction. Vertically, it can hold or pull approximately 1.2 kg with a sane 2:1 margin. The Ø4 mm rod is built for coaxial thrust, so if your stroke length or tooling creates off-axis loads, add an external linear bearing to prevent side-load damage. Confirm your ordering essentials: 20 mm stroke, R axial cover, and no sensor magnet.
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 PTB10X20R FAQ
It delivers a net pull of 23.5 N at 0.5 MPa and 36.7 N at the 0.7 MPa maximum. Because the internal spring sets a minimum resistance, you need at least 0.2 MPa before the rod begins to move. Without air, the spring forces the rod into the fail-safe extended position.
The powered stroke retracts the rod, while the exhaust stroke relies entirely on the spring to push it back out. A fixed TPU bumper at each end decelerates the last few millimeters of travel but is not adjustable. For higher cycle speeds with real tooling mass, meter-out the exhaust or add an external shock absorber to prevent bottoming out.
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Related AirTAC PTB Pen-Size Cylinders
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