Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100
The AirTAC SAIJ80X155-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a G3/8 port. By turning the rear screw, you can shorten the effective travel, creating a highly flexible 55-155mm usable stroke window. This allows precise end-position tuning during commissioning without swapping out the entire cylinder.
Unlike fixed-stroke actuators, this 80mm bore model lets you dial in the retract stop on the fly. The carbon steel rod with an M20x1.5 thread provides robust resistance to side loads, while the extruded aluminum barrel incorporates sensor grooves on both sides for flexible switch mounting. The rear adjuster acts strictly as a travel stop to set the deceleration point, not as a lock to hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80X155-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80X155-100 Is Used
Machine Changeover
Quickly adapt the retract distance from 55 to 155mm when switching a packaging line to accommodate different product dimensions.
Commissioning Calibration
Fine-tune the end-of-stroke position during initial setup to perfectly seat components without machining custom external stoppers.
Variable End Positioning
Dial in the exact clamping depth on an assembly fixture where the optimal travel varies slightly between production runs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-100 the Right Cylinder?
Selecting this adjustable model over a fixed SAI cylinder makes sense when your machine setup requires variable end-stops or frequent product-size changeovers. If your application needs less thrust, stepping down to a 63mm bore yields 1559N at 0.5 MPa; stepping up to a 100mm bore provides 3927N. Because the nominal stroke is 155mm, it falls below the 300mm threshold, so standard mounting guidance applies without needing heavy external guides.
To achieve a true ISO 15552 replacement match, verify the 80mm bore, 155mm nominal stroke, 100mm adjustment range, PT tapered port thread, and carbon steel rod material. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. If your process requires the load to be held mechanically without continuous air pressure, you must integrate an external pilot-operated check valve or switch to an AirTAC SAIL or BSAI locking 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 SAIJ80X155-100 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw lets you trim the effective stroke by up to 100mm. With the 155mm nominal stroke, this creates a usable travel window of 55-155mm, allowing you to set the exact retract position without adding external stops.
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