Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50
The AirTAC SAIJ80X300-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel by up to 50 mm. This creates a usable stroke window of 250-300 mm, letting you fine-tune the retract end position at commissioning without adding external stops. It delivers 2513N of pull force at 0.5 MPa and uses a robust 25 mm rod with an M20x1.5 thread.
This unit includes a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster acts purely as a travel stop to set deceleration and end positions; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 Is Used
Changeover Adjustment
Dial in the exact 250-300 mm retract position during product-size changeovers without machining new hard stops or removing the cylinder from the machine.
Assembly Line Positioning
Provides 2513N pull force at 0.5 MPa to push and pull subassemblies into exact end positions, with fine-tuning handled by the rear screw during commissioning.
Long-Stroke Clamping
Holds parts against a fixed stop with live air, using the 50 mm adjustment window to compensate for varying material thicknesses in clamping fixtures.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 the Right Cylinder?
Choose this 80 mm bore when an application requires more force than a 63 mm cylinder (which provides 1402N pull at 0.5 MPa) but does not need the full 3681N pull of a 100 mm unit. The 50 mm adjustment range is ideal for product-size changeovers on a line, allowing operators to dial in the exact 250-300 mm travel window on the fly instead of physically swapping cylinders.
Because this SKU has a 300 mm stroke, the extended rod is subject to higher bending moments; an external guide should be used to prevent side-load damage. The rear adjuster is a stop, not a lock, so for load-holding without live pressure, consider an AirTAC SAIL or BSAI cylinder. It is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-50 FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513N of pull force and 3518N of push force. At its maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the nominal 300 mm stroke by up to 50 mm, creating a usable travel window of 250-300 mm. The adjuster acts as a mechanical stop to set the end position; it is not a lock and will not hold the load without continuous air pressure.
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