Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100
The AirTAC SAIJ80X250-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, fitting perfectly into medium-to-heavy pneumatic setups. By turning the external adjustment screw at the rear, you can shorten the effective travel by up to 100 mm, creating a usable stroke window of 150 to 250 mm without altering the barrel or mounting footprint.
This cylinder features a 25 mm carbon steel piston rod and a M20x1.5 rod thread, providing robust resistance to side loads. It uses a PT tapered G3/8 port and includes variable air cushions at both ends (36 mm cushion length) to decelerate moving loads smoothly. The extruded aluminum barrel integrates sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic sensors if a magnet is added later. The mounting set is reduced to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAIJ80X250-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SAIJ80X250-100 Is Used
Machine Changeover
Dial in the exact 150 to 250 mm end-position during product size changes on a packaging line without replacing the cylinder.
Assembly Press Tuning
Fine-tune the stroke end-point during commissioning to ensure perfect pressing depth, avoiding costly external stopper blocks.
Conveyor Diverter Setup
Adjust the retract distance on the fly to accommodate different package sizes moving through a sorting conveyor system.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100 the Right Cylinder?
Choose this 80 mm bore over the 63 mm option (which provides 1559 N push at 0.5 MPa) when your application requires significantly more thrust, or step down to the 50 mm bore (982 N push) if the load is lighter. The SAIJ80X250-100 is selected when you need precise end-position tuning at commissioning or during product changeovers, allowing you to dial in the exact travel distance without swapping the cylinder or adding external stops.
Because the nominal stroke is 250 mm, you should ensure adequate external guiding for any heavy loads to prevent rod bending. Remember that the rear adjuster is a travel stop, not a lock; it cannot hold a load without continuous air pressure. For fail-safe load holding, consider the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552, uses a PT G3/8 port, and has no magnet specified.
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 SAIJ80X250-100 FAQ
At 0.5 MPa operating pressure, the SAIJ80X250-100 cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum pressure of 1.0 MPa, it delivers a push force of 5026 N.
The rear adjuster screw acts as a mechanical stop that trims the retract travel. For this 250 mm stroke model, you can shorten the effective stroke by up to 100 mm, giving an adjustable travel window of 150 to 250 mm.
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