Airtac PTB Single Acting Pen-Type Cylinder PTB16X20CB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X20CB 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 PTB16X20CB
The AirTAC PTB16X20CB is a JIS pen-size single-acting pull cylinder featuring a 16 mm bore and 20 mm stroke. Air entering the single M5x0.8 port retracts the rod, while an internal spring pushes it back out upon exhaust release. This provides 65 N of net pull force at 0.5 MPa, with the return spring deduction already applied.
The CB double clevis back cover accommodates pivoting loads, and the SUS304 stainless build ensures durability in tight jigs. Because the powered stroke pulls against the rod-side area, expect lower force than a matching push cylinder. Plan for a safe working load of about 39 N, which accounts for friction and smooth travel.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X20CB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X20CB |
|---|---|
| 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 PTB16X20CB
| 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 PTB16X20CB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into position, pulling the 5 mm rod back to secure a workpiece before releasing air to let the spring safely extend the clamp open.
Wire Belt Tensioner
Maintains steady tension on a routing belt, utilizing the 65 N pull at 0.5 MPa to retract the guide pulley against the moving line.
Retract-to-Open Gate
Air pressure pulls the gate closed to divert product, and dropping the air signal allows the spring to push the barrier out, clearing the lane for straight pass-through.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X20CB the Right Cylinder?
This 16 mm bore yields 65 N net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. If your pivoting assembly requires less force, stepping down to a 12 mm bore provides 33.1 N at 0.5 MPa. Since this is the largest single-acting pen size, exceeding 101.2 N requires moving to a larger body format. The internal spring ensures the rod fails safe in the extended position on air loss, while setting a 0.2 MPa minimum pressure before motion begins. Confirm your pivot pin matches the CB clevis and that your tooling thread is M10x1.0.
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 PTB16X20CB FAQ
It provides a net pull of 65 N at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. The internal return spring requires a minimum 0.2 MPa air pressure to overcome the spring tension and initiate rod retraction.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters. The bumper is not adjustable or a locking brake, so with heavy tooling mass at mid to high speeds you should meter-out the exhaust or add an external shock absorber.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC PTB Pen-Size Cylinders
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