Airtac PTB Single Acting Pen-Type Cylinder PTB16X40CB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X40CB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm bore and 40mm 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.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typePull, single acting
- Rod threadM10×1.0
- 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 PTB16X40CB
The AirTAC PTB16X40CB is a JIS pen-size mini cylinder engineered for single-acting pull operation. Feeding air to the single M5x0.8 port retracts the Ø5 mm rod, while exhausting the line lets an internal spring push it back out. This provides a fail-safe extended state during air loss, making the unit inherently safe for return-to-home and tensioning tasks. You get about 65 N of net pull force at 0.5 MPa, with the return spring deduction already applied.
Built with a SUS304 stainless barrel and a slim body, this 16 mm bore, 40 mm stroke variant saves space in tight jigs. The CB double clevis back cover accommodates pivoting loads. Because pulling acts on the smaller rod-side annular area, this output is lower than a matching push-type unit. The fixed TPU bumper decelerates the stroke's final few millimeters, and the M10x1.0 rod-end thread handles secure tooling attachment.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X40CB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X40CB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 (Ø16mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 65.0 N |
| 0.7 MPa (max) | 101.2 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 PTB16X40CB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×40 | 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 PTB16X40CB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into place and pull 65 N at 0.5 MPa, securing parts while the spring safely holds the clamp open on air loss.
Wire Belt Tensioner
Maintains consistent tension on a conveyor belt, relying on the spring-extend design to keep the line taut when the pneumatic supply drops out.
Retract-To-Open Gate
Powers the retraction to open a small diverter gate, with the internal spring automatically pushing the barrier back out to block the lane during shutdown.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X40CB the Right Cylinder?
This 16 mm bore generates 65 N net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. If your pivoting fixture needs less force, the 12 mm bore provides 33.1 N at 0.5 MPa. Since 16 mm is the largest PTB option, moving up requires switching to a double-acting PB series. The internal spring demands a minimum 0.2 MPa to overcome its resistance before motion begins. Plan for a safe working load of roughly 39 N, which is about 60 percent of the 0.5 MPa rating, to account for seal friction.
Without live air, the spring holds the rod fully extended rather than mid-stroke. For vertical lifting, the cylinder holds or pulls about 3.3 kg when applying a sane 2:1 safety margin. The thin Ø5 mm rod handles coaxial thrust well, but over this 40 mm stroke you should add an external linear bearing if the load is off-axis. Confirm your ordering essentials: CB double clevis, no sensor magnet, and a 40 mm stroke within the 60 mm single-acting limit.
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 PTB16X40CB FAQ
The net pull force is 65 N at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. Because an internal spring opposes the air stroke, a minimum pressure of 0.2 MPa is required before the rod begins to move.
Air enters one M5x0.8 port to retract the rod, and exhaust pressure lets the spring extend it. A fixed TPU bumper cushions the last few millimeters of travel, but with heavy tooling mass at mid speed you should meter-out the exhaust or add an external shock absorber.
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