Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR 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
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR
The AirTAC PTBR10X20SR is a JIS pen-size single-acting pull cylinder. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out. This provides a fail-safe extended state on air loss, ideal for tensioning or return-to-home tasks. It delivers about 23.5 N net pull at 0.5 MPa.
The direct M4x0.7 front-cover thread bolts straight to your fixture, saving space. The SUS316L stainless barrel resists corrosion, and the built-in magnet (-S) supports reed or electronic switches. A fixed TPU bumper cushions the stroke ends. For smooth operation, plan for a safe working load of roughly 14 N (about 60% of the 0.5 MPa rating).
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR |
|---|---|
| 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 PTBR10X20SR
| 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 PTBR10X20SR Is Used
Hold-Down Clamping
Uses spring pressure to keep a workpiece extended and clamped, automatically releasing hold when air retracts the rod.
Retract-to-Open Gate
Direct front-mounting bolts the cylinder straight to a conveyor diverter, pulling the gate open on air and springing it closed safely.
Web Tensioner
Maintains steady outward tension on a filament or web, retracting instantly to slacken the line when compressed air is applied.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X20SR the Right Cylinder?
This 10mm bore provides 23.5 N net pull at 0.5 MPa and 36.7 N at 0.7 MPa. If you need less force, the 8mm bore offers 12.4 N at 0.5 MPa. If your fixture requires more pull, step up to the 12mm bore yielding 33.1 N. Remember the spring requires a minimum 0.2 MPa pressure to move.
The direct M4x0.7 front-mount thread simplifies installation, while the R axial back cover keeps plumbing in line. The Ø4mm rod is built for coaxial thrust, so add an external guide for any off-axis loads. Confirm your port size and thread engagement before ordering.
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 PTBR10X20SR FAQ
It provides a net pull of 23.5 N at 0.5 MPa and 36.7 N at 0.7 MPa (maximum pressure). Because it is single-acting pull, a minimum of 0.2 MPa is required to overcome the spring and retract the rod. If air is lost, the spring pushes the rod back out to the extended position.
It mounts directly via the M4x0.7 thread on the front cover, eliminating extra brackets. The -S suffix indicates a built-in piston magnet compatible with reed or electronic switches. The SUS316L stainless barrel provides durability in tight spaces.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC PTBR Pen-Size Cylinders
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