Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75
The AirTAC SAIJ80X85-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract end position. With a nominal 85 mm stroke and a 75 mm adjustment range, it provides a wide usable travel window of 10 to 85 mm. This adaptability lets you dial in the exact end-stop during commissioning or product changeovers without swapping the physical cylinder or adding external stops. It delivers robust thrust, generating 2513 N of push force and 2268 N of pull force at 0.5 MPa.
This model features a SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. It is important to note that the rear adjuster functions strictly as a travel stop to set deceleration; it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80AX85-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80AX85-75 Is Used
Machine Changeover
Rapidly reconfigure the retract end-stop from 10 to 85 mm when switching a packaging line to a different carton size.
Commissioning Calibration
Fine-tune the final resting position during setup without machining new spacer blocks or disassembling the mounting.
Variable End-Stop Forming
Adjust the stroke depth on the fly for metal forming or pressing tasks that require different material reach distances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-75 the Right Cylinder?
Choose this 80 mm bore when your application requires higher force than a 63 mm cylinder (which provides 1402 N pull at 0.5 MPa) but you want to avoid the bulk of a 100 mm unit. The 75 mm adjustment range is exceptionally large, making this specific SKU ideal for prototyping cells or machinery that processes varying product sizes on the same line, replacing the need to inventory multiple fixed-stroke SAI cylinders. When matching an ISO 15552 replacement, verify the 85 mm stroke, 75 mm adjuster, G3/8 PT port, and your required mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because the adjuster only sets the travel end, load-holding without live air requires a SAIL or BSAI cylinder, or an external rod lock.
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 SAIJ80AX85-75 FAQ
The rear adjuster acts as an external stopper that limits the piston's retract travel. For this model, you can trim the 85 mm nominal stroke back by up to 75 mm, giving an effective adjustable travel window of 10 to 85 mm.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 5026 N.
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