Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 120mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke120 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75
The AirTAC SAIJ32X120-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 120 mm travel by up to 75 mm. This creates a highly flexible 45 to 120 mm usable travel window, perfect for machines requiring rapid product-size changeovers without physical cylinder swaps. As a 32 mm bore unit, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa operating pressure.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position feedback. While the rear stopper screw fine-tunes the end position, it acts strictly as a travel stop and does not hold the load without live air pressure. For applications needing true load holding, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 Adjustable Cylinder SAIJ32 SAIJ32X120-75 Is Used
Product Changeover
Dial in the exact end-stop for varying package sizes on a packaging line, adjusting the stroke from 45 mm to 120 mm on the fly without changing the cylinder.
Machine Commissioning
Fine-tune the retract end-position during setup to perfect the timing and alignment of a pick-and-place mechanism without adding external stopper blocks.
Prototype Testing
Test multiple stroke lengths on a single fixture by adjusting the rear screw, saving the cost of stocking multiple fixed-stroke SAI cylinders during R&D.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75 the Right Cylinder?
Choose this 32 mm bore model when your application requires a compact actuator with a highly variable end-stop. The 75 mm adjustment range on a 120 mm stroke provides maximum flexibility for prototyping or short production runs. If your setup needs slightly more thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. The PT tapered port thread matches the standard 32 mm bore specification (G1/8 equivalent flow), and the carbon steel rod offers standard durability.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 120 mm nominal stroke, 75 mm adjustment requirement, PT port thread, and standard carbon steel rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR mounts. Since the total stroke is 120 mm, side-load risks are minimal, but an external guide remains recommended 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 Adjustable Cylinder SAIJ32 SAIJ32X120-75 FAQ
It features a rear adjuster screw that lets you shorten the effective stroke by up to 75 mm. This provides a usable travel window of 45 to 120 mm, allowing you to set the exact retract position without swapping the cylinder.
At 0.5 MPa operating pressure, it provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, the push force increases to 801 N.
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