Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50
The AirTAC SAIJ80X800-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm. This creates a usable stroke window of 750-800 mm, enabling precise end-position tuning at commissioning without swapping out the entire cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
Falling into the 2513 N thrust class at 0.5 MPa, this bore size provides substantial force for long-travel handling. The piston rod is constructed from SUS420J2 stainless steel (A option) for enhanced corrosion resistance, and the PT tapered port threads ensure a robust, leak-free pneumatic connection. The rear adjuster acts purely as a mechanical stop to set the retract end position and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80AX800-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80AX800-50 Is Used
Long-Travel Material Handling
Ideal for transferring heavy pallets over an 800 mm distance, with the 50 mm adjuster allowing you to dial in the exact retract position to match varying pallet depths on the line.
Machine Setup & Changeover
Quickly fine-tune the end-stop during product size changeovers without disassembling the actuator or bolting on external mechanical stops, minimizing machine downtime.
Large Assembly Presses
Delivers up to 4523 N of push force at 0.9 MPa for seating large components, while the SUS420J2 stainless rod withstands harsh industrial environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50 the Right Cylinder?
Choose this 80 mm bore if your application requires heavy pushing power (2513 N at 0.5 MPa, or 4523 N at 0.9 MPa) across an 800 mm travel distance. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa and a faster cycle time. The adjustable-stroke feature is highly beneficial for machine setups requiring variable end-stops or product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot provide.
Because the stroke is 800 mm, the long unsupported piston rod is susceptible to side-loading and sagging; an external guide mechanism is strongly recommended to prevent premature seal wear. When selecting your ISO 15552 replacement, match the 80 mm bore, 800 mm stroke, 50 mm adjustment range, PT port threads, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this plain SAIJ model does not hold position without live air; for fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ80AX800-50 FAQ
The rear adjuster screw lets you shorten the nominal 800 mm stroke by up to 50 mm, giving a usable travel window of 750-800 mm. It acts as a mechanical stop to fine-tune the retract position at commissioning; it is not a lock and will not hold the load without continuous air pressure.
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 513 kgf.
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