Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X25SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X25SR 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 Ø10mm bore, 25mm stroke; the return spring resets the rod when air is released.
- BoreØ10 mm
- Stroke25 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 PTBR10X25SR
The AirTAC PTBR10X25SR is a JIS pen-size single-acting pull cylinder with a 10mm bore and 25mm stroke. Air entering the M5x0.8 port retracts the rod, while a built-in spring pushes it back out. This provides 23.5 N of net pull at 0.5 MPa, increasing to 36.7 N at the 0.7 MPa maximum. Because the pull acts on the smaller rod-side area, this force is lower than a matching push-type unit.
It mounts directly via the front-cover M4x0.7 thread, eliminating extra brackets. The SUS316L stainless barrel and slim body fit tight jigs. A fixed TPU bumper decelerates the stroke ends, and the -S magnet supports reed or electronic switches.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X25SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X25SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 25 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 (Ø10mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 23.5 N |
| 0.7 MPa (max) | 36.7 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 PTBR10X25SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 10 | Bore size in mm. |
| ×25 | 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 PTBR10X25SR Is Used
Hold-Down Clamping
Spring pressure keeps the rod extended to secure light parts during machining. Air retracts the clamp to release the workpiece.
Retract-to-Open Gate
Direct front-mount M4x0.7 thread bolts to a conveyor diverter. Air pulls the gate closed, and spring pressure opens it on air loss.
Web Tensioner
Maintains steady tension on light materials. The fail-safe extended position prevents slack if the air supply drops.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X25SR the Right Cylinder?
For sizing, the 10mm bore yields 23.5 N net pull at 0.5 MPa. If you need less force, the 8mm bore provides 12.4 N; for more power, the 12mm bore offers 33.1 N. This PTBR10X25SR is fail-safe extended on air loss, making it ideal for hold-down or return-to-home tasks. The front M4x0.7 thread bolts straight to your fixture, and the R axial inlet keeps plumbing in line.
When ordering, confirm the 25mm stroke fits your cycle. The internal spring requires at least 0.2 MPa to move the rod. Since the rod is only 4mm thick, add an external guide for off-axis loads.
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 PTBR10X25SR FAQ
The net pull force is 23.5 N at 0.5 MPa and 36.7 N at the 0.7 MPa maximum. A minimum of 0.2 MPa is required to overcome the spring and retract the rod. It fails safe to the extended position.
It mounts directly via the front-cover M4x0.7 thread. The -S option includes a built-in magnet compatible with reed or electronic switches. The SUS316L barrel provides corrosion resistance.
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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