
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X30SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm bore and 30mm 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.
The AirTAC PTB16X30SCB 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. This fail-safe extended state is ideal for holding parts securely when pneumatic pressure drops. It yields 65 N of net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum.
Built with a SUS304 stainless barrel and a slim 16 mm body, it saves space in tight jigs. The CB double clevis allows pivoting mount alignment, while the integrated magnet supports reed or electronic switches. Because pulling acts on the rod-side area, expect lower force than a matching push cylinder.
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X30SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 30 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.
| 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.
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×30 | 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).
Uses the CB double clevis to swing into position, pulling the rod back to clamp workpieces securely before machining.
Applies steady tension during operation and safely extends outward to slacken the belt completely upon air loss.
Holds a guide arm extended by default to straighten items, retracting momentarily to open a temporary gap on the line.
This 16 mm bore generates 65 N net pull at 0.5 MPa. Sizing both ways, the smaller 12 mm bore offers 33.1 N, and since 16 mm is the largest PTB option, stepping up requires a double-acting PB body. Plan for a safe working load of about 39 N, which is roughly 60 percent of the rated figure, to account for seal friction.
The internal return spring demands a minimum 0.2 MPa pressure before motion begins. The fixed TPU bumper decelerates the last few millimeters of travel, but above mid-speed with heavy tooling, meter-out the exhaust or add an external shock absorber. Confirm your ordering essentials: M10x1.0 rod-end thread, CB clevis, and the built-in magnet.
Quick checklist
It provides a net pull of 65 N at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. The internal spring requires at least 0.2 MPa to overcome its resistance and retract the rod. Without air, the spring holds the rod safely extended.
The fixed TPU bumper cushions the last few millimeters of stroke but is not adjustable, so external shock absorption may be needed at high speeds. The built-in magnet works with AirTAC reed or electronic switches for position sensing.
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