Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40S 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 SAIJ80X135-40S
The AirTAC SAIJ80X135-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel window down to 95-135 mm during commissioning. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it suitable for medium-to-heavy actuation tasks. The extruded aluminum barrel features sensor grooves on both sides, and because this SKU includes the -S magnet, it is fully ready for position detection using AirTAC CMSE reed or DMSE electronic solid-state switches.
This model uses a 25 mm carbon steel rod with an M20x1.5 thread, providing robust resistance to side loads, though any 135 mm stroke still benefits from an external guide for optimal alignment. The rear adjustment screw acts purely as a mechanical stop to set the end position; it does not lock or hold the load without continuous live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40S |
|---|---|
| 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 SAIJ80X135-40S
| 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 SAIJ80X135-40S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 95 and 135 mm during machine setup to accommodate varying material thicknesses without disassembling the actuator.
Product Changeover
Quickly reconfigure the stroke limit on packaging lines when switching to a different carton or product size, minimizing downtime between production runs.
Medium-Heavy Forming
Leverage the 2513 N push force at 0.5 MPa for pressing or clamping operations, using the rear stop to prevent over-travel and ensure consistent depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-40S the Right Cylinder?
Choose this 80 mm bore when your application requires more force than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but does not need the bulk of a 100 mm bore (3927 N push). The 40 mm adjustment range is ideal for production lines that undergo frequent product size changeovers, allowing operators to reposition the end-stop without swapping the cylinder or adding external stops. Unlike a fixed-stroke SAI cylinder, the SAIJ lets you dial in the exact 95 to 135 mm travel window on the fly.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 135 mm nominal stroke, G3/8 PT tapered ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR brackets to maintain a compact adjustment footprint.
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 SAIJ80X135-40S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 135 mm stroke by up to 40 mm, creating a usable travel window of 95 to 135 mm. It only sets the end position and does not hold the load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ80X135-40-S provides 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at 0.9 MPa.
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