Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30
The AirTAC SAIJ80X240-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 240 mm stroke that can be fine-tuned down by up to 30 mm, creating a precise 210-240 mm usable travel window during commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles substantial pneumatic workloads with ease.
This extruded aluminum profile cylinder uses a PT tapered G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread, offering robust resistance to side loads. It supports adjustable air cushions at both ends to decelerate heavy masses smoothly. For position feedback, adding the -S magnet option allows integration with AirTAC CMSE reed or DMSE electronic solid-state sensors in the dual-side sensor grooves.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80X240-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80X240-30 Is Used
Product Changeovers
Dial in the 210-240 mm travel window during format changes on packaging lines, using the rear screw to set new end positions without replacing hardware.
Machine Setup
Fine-tune the final retract position during commissioning to perfectly mate tooling, preventing impact damage and reducing setup time.
Variable End Stops
Accommodate multiple part sizes on a single fixture by adjusting the stroke limit in the field, leveraging the 2513 N push force for robust actuation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X240-30 the Right Cylinder?
Select this 80 mm bore when an application requires higher thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa), but without stepping up to the larger 100 mm size. The 30 mm rear adjuster is ideal for product changeovers, letting operators dial in the exact end-of-stroke position without swapping cylinders or adding external mechanical stops. Since the 240 mm stroke is below the 300 mm side-load threshold, standard mounting is typically sufficient, though the 25 mm rod still handles offsets well.
When matching this for an ISO 15552 replacement, verify the 240 mm stroke, 30 mm adjustment range, PT G3/8 port, and your required mounting style. SAIJ supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Remember that the rear adjuster is a travel stop, not a lock; the cylinder will not hold a load without live air. For true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80X240-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster acts as an external stopper that trims the effective travel. For this SAIJ80X240-30, you can shorten the 240 mm nominal stroke by up to 30 mm, resulting in a usable travel window of 210 to 240 mm. It only sets the end position and does not lock the load without live air pressure.
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