Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S
The AirTAC SAIJ80X165-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 25 mm carbon steel rod and delivers 2513 N of push force at 0.5 MPa. Equipped with a magnet, it supports CMSE reed and DMSE electronic sensors mounted in the dual-side extruded aluminum barrel grooves.
This model features a 165 mm nominal stroke that can be dialed back by up to 40 mm, creating a precise 125-165 mm usable travel window. The rear adjuster acts purely as a mechanical stop for end-position tuning during commissioning. It does not lock or hold the load without live air pressure; for load-holding applications, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 165 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 SAIJ80X165-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×165 | 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 SAIJ80X165-40S Is Used
Machine Changeover
Dial in the exact 125-165 mm end position during product size changes without physically replacing the actuator.
Variable End Stops
Use the 40 mm rear adjustment screw to fine-tune retract distances on packaging lines where exact positioning is critical.
Assembly Calibration
Perfectly set the stroke limit during initial commissioning to prevent overtravel and ensure precise pressing forces.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40S the Right Cylinder?
Choose this 80 mm bore when you need more thrust than the 50 mm bore (which provides 982 N push at 0.5 MPa) but want to avoid the larger footprint and higher air consumption of a 100 mm bore. The 40 mm adjustment range is ideal for product changeovers, allowing you to fine-tune the end stop without swapping cylinders or adding external stops. The PT tapered port thread ensures a tight, reliable pneumatic seal.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 165 mm stroke, 40 mm adjustment, PT G3/8 port, and the -S magnet requirement. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Since this cylinder features an 80 mm bore and a 165 mm stroke, side loads are manageable, but always use an external guide for heavy lateral loads.
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 SAIJ80X165-40S FAQ
It delivers 2513 N push and 2268 N pull force at 0.5 MPa, and up to 4523 N push at 0.9 MPa. The operating speed range is 30-800 mm/s.
The rear adjuster lets you shorten the 165 mm nominal stroke by up to 40 mm, providing a usable travel window of 125-165 mm. The adjuster is a mechanical stop, not a lock, so it cannot hold the load without live air pressure.
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