Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R is a single acting, pull type (spring extend) pen-size mini cylinder with direct front-cover mounting (M4×0.7 thread). A single air port drives the pull stroke on a Ø8mm bore, 60mm stroke; the return spring resets the rod when air is released.
- BoreØ8 mm
- Stroke60 mm
- Port sizeM5×0.8
- Front-mount threadM4×0.7
- 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 PTBR8X60R
The AirTAC PTBR8X60R is a JIS pen-size single-acting pull cylinder with a 60 mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out. This fail-safe extended behavior keeps the rod out during air loss, making it ideal for tensioning or hold-down tasks. It provides 12.4 N of net pull at 0.5 MPa and 19.9 N at 0.7 MPa.
You mount this slim SUS316L stainless body directly via its front-cover M4x0.7 thread. A fixed TPU bumper cushions the stroke ends. Because the 4 mm rod is slender at this 60 mm length, use an external linear bearing for any off-axis loads.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø8 mm |
| Rod diameter | Ø4 mm |
| Stroke | 60 mm |
| Acting type | Single acting, pull type (spring extend) |
| Front-mount thread | M4×0.7 |
| 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 60 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 (M4×0.7); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Pull Force (Ø8mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 12.4 N |
| 0.7 MPa (max) | 19.9 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 PTBR8X60R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 8 | Bore size in mm. |
| ×60 | 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 (M4×0.7). Related PBR-family variants: PBR (double acting), PSBR (single-acting push).
Where the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R Is Used
Hold-Down Clamp
Uses spring pressure to hold a part extended, then air pulls the clamp back to release the component.
Tensioning Jig
Maintains a steady pull on a filament or wire, retracting further only when air pressure is applied.
Retract-to-Open Gate
Blocks a lane by default with the rod out, and air retracts the gate to let parts pass downstream.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR8X60R the Right Cylinder?
This 8 mm bore yields 12.4 N net pull at 0.5 MPa. If you need less force, the 6 mm bore offers 7.1 N. If your task requires more power, stepping up to the 10 mm bore provides 23.5 N. Selecting the right size ensures the spring can overcome friction to extend properly.
The direct front-cover thread simplifies fixture integration, while the R axial inlet keeps plumbing in line. Confirm your pressure stays between 0.2 and 0.7 MPa, as the spring requires a minimum of 0.2 MPa to retract the rod. This unit has no magnet.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Bolt directly through the front cover (M4×0.7)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 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 PTBR8X60R FAQ
It delivers 12.4 N net pull at 0.5 MPa and 19.9 N at 0.7 MPa. Because it is single-acting pull, it requires a minimum of 0.2 MPa to overcome the spring and retract the rod. If air is lost, the spring pushes the rod back out.
It mounts directly via the front-cover M4x0.7 thread. The air inlet uses an R axial back cover with an M5x0.8 port. The barrel is made of SUS316L stainless steel, and this specific model does not include a sensor magnet.
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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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