Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40
The AirTAC SAIJ80X135-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 95-135 mm. It delivers 2513 N of push force at 0.5 MPa, making it well-suited for moderate to heavy actuation. The extruded aluminum barrel features sensor grooves on both sides for flexible positioning of CMSE reed or DMSE electronic switches.
A 40 mm adjustment range allows you to dial back the end-of-stroke position at commissioning without adding external stops. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. This model uses a standard carbon steel rod with a 25 mm diameter and M20x1.5 thread, providing robust resistance to side loads.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 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 SAIJ80X135-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×135 | 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 SAIJ80X135-40 Is Used
Machine Setup Changeover
Fine-tune the retract position within the 95-135 mm window during line changeovers without swapping cylinders or adding external mechanical stops.
Variable End-Stop Positioning
Dial in the exact end-of-stroke location for multi-product manufacturing lines, using the 40 mm adjustment range to accommodate varying part sizes.
Heavy-Duty Actuation
Leverage the 2513 N push force at 0.5 MPa for pressing or moving rigid assemblies, relying on the 25 mm carbon steel rod for structural stability.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40 the Right Cylinder?
Choose this 80 mm bore when your application requires the 2513 N push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. The 40 mm adjustable stroke is ideal for product changeovers where the exact end-stop position needs rapid fine-tuning. For load-holding without live air, consider the SAIL or BSAI series, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 135 mm nominal stroke, 40 mm adjustment, PT tapered port thread, and mounting interface. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 25 mm rod carries high side loads, ensure proper external guiding for this 135 mm travel.
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 SAIJ80X135-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 135 mm down to 95 mm. It trims the travel end for fine-tuning but does not lock or hold the load without continuous air pressure.
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