Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R is a single acting, pull type (spring extend) pen-size mini cylinder with direct front-cover mounting (M5×0.8 thread). A single air port drives the pull stroke on a Ø16mm bore, 80mm stroke; the return spring resets the rod when air is released.
- BoreØ16 mm
- Stroke80 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePull, single acting
- ReturnSpring
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R
The AirTAC PTBR16X80R is a single-acting pull-type pen cylinder with an 80 mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out. This provides 65 N of net pull force at 0.5 MPa, increasing to 101.2 N at the 0.7 MPa maximum. Because the spring holds the rod extended, the cylinder fails safe to the out position on air loss.
You bolt this unit straight to a fixture using the direct M5x0.8 front-cover mounting thread, keeping the assembly short. The SUS316L stainless barrel houses a fixed TPU bumper to decelerate the stroke ends. Plan for a safe working load of about 39 N, which is roughly 60 percent of the rated 0.5 MPa pull, to account for seal friction.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 80 mm |
| Acting type | Single acting, pull type (spring extend) |
| Front-mount thread | M5×0.8 |
| Port size | M5×0.8 |
|---|---|
| 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 100 mm |
The spring holds the rod extended; applying air retracts it, and removing air lets the spring push the rod back out. Front cover carries the mounting thread (M5×0.8); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Pull Force (Ø16mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 65.0 N |
| 0.7 MPa (max) | 101.2 N |
These are usable pull forces after the return spring is subtracted, 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 PTBR Single Acting Square Head Compact Cylinder PTBR16X80R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | 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: direct front-cover thread (M5×0.8). Related PBR-family variants: PBR (double acting), PSBR (single-acting push).
Where the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R Is Used
Hold-Down Clamping
Pulls a part down against a fixture with 65 N net force at 0.5 MPa, releasing the clamp automatically when air pressure drops.
Retract-to-Open Gate
Holds a guide gate open by spring pressure for safe product flow, using air to pull the gate closed and halt the conveyor line.
Web Tensioner
Maintains steady tension on a film strip by spring pressure, retracting the idler roller to slacken the web during air-exhaust cycles.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R the Right Cylinder?
This 16 mm bore provides 65 N net pull at 0.5 MPa. If your jig needs less force, stepping down to the 12 mm bore yields 33.1 N at the same pressure. Moving up is not an option here since 16 mm is the largest pen-size diameter available. The 80 mm stroke sits comfortably under the 100 mm limit for this bore.
Remember the internal spring requires a minimum 0.2 MPa operating pressure before motion begins. The direct front-cover M5x0.8 thread handles mounting, and the R axial inlet keeps plumbing in a single line. The thin 5 mm rod handles coaxial thrust well, but over this 80 mm stroke you should add an external linear bearing for any off-axis loads.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Bolt directly through the front cover (M5×0.8)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 100 mm (single-acting limit)
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 Match bolt size and engagement to the front thread.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X80R FAQ
It provides 65 N net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. Because it is single-acting pull, the internal spring requires a minimum 0.2 MPa to retract the rod, and the cylinder fails safe to the extended position on air loss.
It mounts directly via the M5x0.8 front-cover thread, eliminating extra brackets. The R back cover provides an axial air inlet for inline plumbing, and the SUS316L stainless barrel suits tight jigs. This unit has no magnet for position sensing.
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Related AirTAC PTBR Pen-Size Cylinders
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