Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR 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, 40mm stroke; the return spring resets the rod when air is released.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePull, single acting
- 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 PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR
The AirTAC PTBR16X40SR is a JIS pen-size single-acting pull cylinder with a 16 mm bore and 40 mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out, ensuring fail-safe extension on air loss. It yields 65 N of net pull at 0.5 MPa and 101.2 N at 0.7 MPa.
You bolt this actuator straight to a fixture via the direct M5x0.8 front-cover thread, keeping the assembly short. The SUS316L stainless barrel shrinks envelope size for tight jigs. A fixed TPU bumper cushions the end strokes, and the built-in magnet (-S) tracks position with reed or electronic switches.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PTBR16X40SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 16 | Bore size in mm. |
| ×40 | 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 PTBR16X40SR Is Used
Fail-Safe Hold-Down Clamp
Clamps a workpiece by pulling air to retract, with the spring maintaining downward pressure if the air supply drops.
Retract-to-Open Gate
Uses the 65 N net pull to hold a diverter gate shut during transit, springing back to the open position at rest.
Web Tensioner
Maintains steady tension on a filament or web by pulling against the spring force, mounted via the front-cover thread.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X40SR the Right Cylinder?
Dropping to a 12 mm bore drops net pull to 33.1 N at 0.5 MPa, while this 16 mm unit provides a stronger return.
Because the spring holds the rod extended, this model suits hold-down clamps where air loss keeps the tool safely engaged. The rod is only 5 mm thick, so over the 40 mm stroke or under off-axis loads, add an external linear bearing to prevent side-load damage. Confirm the R axial inlet and front-mount thread match your manifold geometry.
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 PTBR16X40SR FAQ
The net pull force is 65 N at 0.5 MPa and 101.2 N at 0.7 MPa. Because it is single-acting pull, a minimum pressure of 0.2 MPa is required to overcome the spring and retract the rod. The spring automatically extends the rod as a fail-safe on air loss.
It mounts directly via the M5x0.8 front-cover thread, eliminating extra brackets. The -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic solid-state switches. The SUS316L stainless barrel provides corrosion resistance for tight jigs.
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 PTBR Pen-Size Cylinders
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