Airtac PTB Single Acting Pen-Type Cylinder PTB16X45SR
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X45SR 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 PTB16X45SR
The AirTAC PTB16X45SR is a JIS pen-size single-acting pull cylinder where air entering the single M5x0.8 port retracts the rod, and an internal spring pushes it back out. Because the powered stroke pulls against the rod-side area, you get 65 N of net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. The integrated magnet allows position sensing.
Without live air, the spring holds the rod safely extended, making it ideal for return-to-home and hold-down duties. The SUS304 stainless barrel and Ø5 mm rod keep the body slim, while the fixed TPU bumper cushions the end strokes. Plan for a safe working load of about 39 N to account for friction, or roughly 3.3 kg of vertical pull with a 2:1 margin.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X45SR Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X45SR |
|---|---|
| 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 PTB16X45SR
| 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 PTB16X45SR Is Used
Hold-Down Clamping
Uses the spring-extended fail-safe state to hold a workpiece securely, retracting only when air is applied to release the part.
Belt Tensioner
Maintains constant tension on a belt or wire via the spring force, pulling back to slacken the line when pressurized.
Retract-to-Open Gate
Spring force keeps a sorting gate normally closed, using the 65 N pull to retract and divert items on a conveyor line.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X45SR the Right Cylinder?
This 16 mm bore provides the highest net pull in the PTB family at 65 N @0.5 MPa. If your task requires less force, stepping down to the 12 mm bore yields 33.1 N @0.5 MPa. The 45 mm stroke operates within the 60 mm single-acting limit. Note the internal spring sets a 0.2 MPa minimum pressure before motion begins.
The R suffix specifies an axial air inlet for inline plumbing, and the S suffix adds a piston magnet for reed or electronic switches. Confirm your tooling keeps side loads off the Ø5 mm rod by using an external guide over this 45 mm travel.
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 PTB16X45SR FAQ
It provides 65 N of net pull 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 moves. The spring ensures the rod fails safe in the extended position on air loss.
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. Since it only decelerates the last few millimeters, you should meter-out the exhaust or add an external shock absorber when cycling real tooling mass at higher speeds.
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Related AirTAC PTB Pen-Size Cylinders
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