Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20R 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, 20mm stroke; the return spring resets the rod when air is released.
- BoreØ10 mm
- Stroke20 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 PTBR10X20R
The AirTAC PTBR10X20R is a JIS pen-size single-acting pull cylinder with a 10mm bore and 20mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out, providing fail-safe extension on air loss. It yields about 23.5N net pull at 0.5MPa. The direct M4x0.7 front-cover mounting thread bolts straight to your fixture, eliminating extra brackets.
Because pull acts on the smaller rod-side annular area, this usable force is lower than a matching push-type cylinder. The SUS316L stainless barrel and slim body fit tight spaces and light end-of-arm tooling. A fixed TPU bumper cushions the end of stroke, and the R axial inlet keeps plumbing perfectly in line.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 20 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 PTBR10X20R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 10 | 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: 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 PTBR10X20R Is Used
Fail-Safe Hold-Down Clamp
Clamps a part securely when air retracts the rod, automatically releasing the hold to extend outward if air pressure drops.
Retract-to-Open Gate
Pulls a light diverter or small gate closed during operation, using the internal spring to push the barrier open on shutdown.
Light Tensioning Jig
Maintains steady tension on a film or wire via spring extension, using air only to reset the pull stroke.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20R the Right Cylinder?
Plan for about 14N of real work (roughly 60% of the 23.5N rated at 0.5MPa) to account for seal friction and smooth travel. Vertically, this translates to holding or pulling about 1.2kg with a sensible 2:1 safety margin. If you need less force, the Ø8 bore provides 12.4N at 0.5MPa; stepping up to the Ø12 bore offers 33.1N at 0.5MPa.
The spring requires a minimum 0.2MPa to move the rod. The Ø4mm rod is built for coaxial thrust, so over this 20mm stroke or under off-axis loads, add an external guide or linear bearing to prevent side load. Confirm your M4x0.7 front-mount thread engagement and that no magnet (-S) is needed.
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 PTBR10X20R FAQ
It provides a net pull of 23.5N at 0.5MPa and 36.7N at the 0.7MPa maximum. A minimum of 0.2MPa is required to overcome the spring and retract the rod; the spring ensures fail-safe extension upon air loss.
It mounts directly via an M4x0.7 thread on the front cover, while the separate M5x0.8 air port uses an R axial back cover for in-line plumbing. The SUS316L barrel provides corrosion resistance in a compact pen-size body.
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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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