Airtac PTB Single Acting Pen-Type Cylinder PTB16X20SCB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X20SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke20 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 PTB16X20SCB
The AirTAC PTB16X20SCB is a JIS pen-size single-acting pull cylinder where air entering one M5x0.8 port retracts the rod, while an internal spring pushes it back out. It delivers 65 N of net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. The built-in magnet enables position sensing with reed or electronic switches.
Equipped with a CB double clevis, this SUS304 stainless steel body is built for pivoting loads. The fixed TPU bumper decelerates the stroke at both ends. Because the return spring constantly pushes outward, the rod achieves a fail-safe extended state whenever air pressure drops.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X20SCB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X20SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 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 (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 PTB16X20SCB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | 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 PTB16X20SCB Is Used
Pivoting Hold-Down Clamp
Uses the CB double clevis to swing into place, applying 65 N of pull to secure light panels during machining.
Wire Belt Tensioner
Maintains steady tension on packaging lines, with the spring automatically extending the rod to take up slack if air fails.
Retract-to-Open Gate
Pulls a lightweight access door open upon air signal and relies on the fail-safe extended position to close it securely.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X20SCB the Right Cylinder?
This 16 mm bore provides 65 N net pull at 0.5 MPa. Stepping down to a 12 mm bore yields 33.1 N, whereas this model is chosen when you need the heaviest available pull in the pen-size format. The internal spring requires a minimum 0.2 MPa pressure before retraction motion begins.
For sizing, plan for a safe working load of about 39 N, which is roughly 60 percent of the rated 0.5 MPa force, ensuring smooth travel against seal friction. For vertical lifts, this equates to holding or pulling about 3.3 kg with a 2:1 safety margin. Confirm your setup accommodates the CB double clevis pivot and the 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 PTB16X20SCB FAQ
It provides a net pull of 65 N at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. Because the internal spring opposes the air stroke, a minimum pressure of 0.2 MPa is required before the rod retracts. Upon air loss, the spring forces the rod back out.
The fixed TPU bumper cushions the last few millimeters of travel and is not adjustable; at high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber. The S suffix denotes a built-in magnet compatible with AirTAC reed or electronic switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PTB Pen-Size Cylinders
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