Airtac PTB Single Acting Pen-Type Cylinder PTB10X50SR
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB10X50SR is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø10mm bore and 50mm 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
- Stroke50 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 PTB10X50SR
The AirTAC PTB10X50SR 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, with the return spring force already subtracted. Because the powered stroke acts on the rod-side area, this pull rating is lower than a matching push cylinder.
The built-in -S magnet supports reed or electronic switches for position sensing. A slim SUS304 stainless body saves space on end-of-arm tooling. For smooth operation, plan for a safe working load of about 14 N (roughly 60 percent of the 0.5 MPa rating) to account for seal friction. The fixed TPU bumper decelerates the last few millimeters of travel, but at high speeds with real tooling mass, you should meter-out the exhaust or add an external shock absorber.
Airtac PTB Single Acting Pen-Type Cylinder PTB10X50SR Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB10X50SR |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 50 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 PTB10X50SR
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 10 | Bore size in mm. |
| ×50 | 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 PTB10X50SR Is Used
Hold-Down Clamping
Uses spring pressure to keep a workpiece extended, retracting only when air is applied to release the part.
Wire Belt Tensioner
Maintains steady tension on a belt or wire by default, pulling back to relieve slack during cycling.
Retract-To-Open Gate
Holds a diverting gate closed via spring force, using a single air line to pull the gate open on demand.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB10X50SR the Right Cylinder?
This 10 mm bore, 50 mm stroke model offers 23.5 N net pull at 0.5 MPa. If you need less force, stepping down to a 6 mm bore yields 7.1 N; if your jig requires more power, moving up to a 12 mm bore provides 33.1 N. The internal spring sets a 0.2 MPa minimum pressure before motion begins and ensures the rod fails safe in the extended position if air pressure drops.
Remember the thin Ø4 mm rod is built for coaxial thrust, not side load. Over this 50 mm stroke, add an external guide or linear bearing for any off-axis loads. This configuration includes the -S magnet for sensing and the R axial inlet for inline plumbing, accepting an M8x1.0 rod-end thread.
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 PTB10X50SR FAQ
It delivers 23.5 N of net pull at 0.5 MPa and 36.7 N at 0.7 MPa (maximum pressure). The internal return spring requires a minimum of 0.2 MPa before the rod will move. If air loss occurs, the spring forces the rod to fail safe in the extended position.
The -S suffix indicates a built-in piston magnet compatible with reed or electronic switches. Cushioning is handled by a fixed TPU bumper at each end that absorbs impact in the final few millimeters. For heavier tooling mass at higher 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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