Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75S 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 SAIJ32X120-75S
The AirTAC SAIJ32X120-75-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 120 mm stroke that can be mechanically dialed back by up to 75 mm, creating a wide 45-120 mm usable travel window for highly flexible end-position tuning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This variant includes a standard carbon steel rod, PT tapered port threads, and an integrated magnet (-S) for electronic position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing you to easily mount AirTAC DMSE solid-state or CMSE reed switches without extra brackets. It uses variable air cushions at both ends to manage deceleration across its 30-800 mm/s operating speed range.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75S |
|---|---|
| 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 SAIJ32X120-75S
| 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 SAIJ32X120-75S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 45 and 120 mm during machine commissioning to accommodate different material thicknesses without replacing the cylinder.
Product Size Changeovers
Rapidly adapt automated assembly lines to new product profiles by adjusting the rear stopper, achieving precise end-position control on the fly.
Sensor-Ready Positioning
Leverage the integrated magnet and dual sensor grooves to mount DMSE electronic switches exactly where needed along the shortened travel path.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-75S the Right Cylinder?
Choose this 32 mm bore model when an application requires significant on-the-fly stroke variability within a compact footprint, as the 75 mm adjustment range allows you to cut the travel down to 45 mm without swapping hardware. If your process needs higher clamping power, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. For fixed-travel setups without the need for mechanical fine-tuning, the standard AirTAC SAI series is a simpler alternative.
Because the 120 mm nominal stroke is relatively short, side-load stress on the 12 mm rod and M10x1.25 thread is minimal, though external guides remain best practice for heavy radial loads. Note that the rear adjuster acts purely as a mechanical stop to set the retract position; it does not lock or hold the load without continuous air pressure. For true fail-safe load holding, consider the AirTAC SAIL or BSAI series instead. This SAIJ model supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ32X120-75S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from its 120 mm nominal length down to a minimum of 45 mm, providing a 75 mm tuning window. It sets the travel end and relies on the air cushion for deceleration, but it does not function as a lock to hold the load without live air pressure.
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. Because it includes an integrated magnet (-S), it is fully compatible with AirTAC CMSE reed switches and DMSE solid-state electronic sensors mounted in the barrel grooves.
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