Airtac PTB Single Acting Pen-Type Cylinder PTB16X45CB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X45CB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm bore and 45mm 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
- Stroke45 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 PTB16X45CB
The AirTAC PTB16X45CB is a JIS pen-size single-acting pull cylinder with a 16 mm bore and 45 mm stroke. Air entering the single M5x0.8 port retracts the rod, while an internal spring pushes it back out upon exhaust release. This spring-extend configuration ensures the rod fails safe in the extended position if air pressure drops. It yields 65 N of net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum, with the return spring force already subtracted.
Equipped with a CB double clevis back cover, this unit accommodates pivoting load requirements. The SUS304 stainless barrel and slim mini body conserve space on tight jigs. A fixed TPU bumper at each end decelerates the last few millimeters of travel. Because the internal spring opposes motion, a minimum 0.2 MPa pressure is required before the rod moves.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X45CB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X45CB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 45 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 PTB16X45CB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×45 | 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 PTB16X45CB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into position, applying 65 N of net pull at 0.5 MPa to secure parts, with the spring ensuring the clamp retracts safely open on air loss.
Wire Belt Tensioner
Maintains steady tension on moving lines by pulling against the load, offering a safe vertical hold of about 3.3 kg with a 2:1 margin at 0.5 MPa.
Retract-to-Open Gate
Air pressure pulls the 45 mm rod back to unblock a pathway, while the spring-extend mechanism automatically closes the gate when the single solenoid de-energizes.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X45CB the Right Cylinder?
Selecting this 16 mm bore provides 65 N net pull at 0.5 MPa. If your application requires less force, the 12 mm bore variant offers 33.1 N at the same pressure, whereas stepping up is impossible as 16 mm is the largest available PTB size. Remember that pull acts on the smaller rod-side annular area, making these figures lower than the equivalent push forces of the PSB series.
The internal spring dictates a fail-safe extended state during air loss and sets a 0.2 MPa minimum operating threshold. For this 45 mm stroke, the slender Ø5 mm rod requires an external guide or linear bearing to prevent side-loading damage. Plan for a safe working load of roughly 39 N, representing about 60 percent of the 0.5 MPa rating to account for seal friction. Confirm your ordering essentials: CB double clevis mount, M5x0.8 port, and M10x1.0 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 PTB16X45CB 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 pushes the rod out, a minimum pressure of 0.2 MPa is required to overcome the spring and retract the rod. The rod fails safe in the extended position without air.
This 16 mm bore model uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel. It is not adjustable. At higher speeds with real tooling mass, the bumper can bottom out, so you should meter-out the exhaust or add an external shock absorber.
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Related AirTAC PTB Pen-Size Cylinders
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