Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50
The AirTAC SAIJ32X70-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 70 mm travel back by up to 50 mm. This yields a highly flexible usable travel window of 20-70 mm, letting you dial in exact end positions during commissioning without swapping hardware. It delivers 402 N of push force at 0.5 MPa and uses a G1/8 port.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered port threads, this unit is built for varied industrial environments. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU is configured without a magnet. The rear adjuster functions strictly as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 70 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 SAIJ32AX70-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SAIJ32AX70-50 Is Used
Machine Changeovers
Quickly reconfigure the stroke from 20 to 70 mm during product size changeovers on a packaging line without changing the cylinder.
End-Stop Calibration
Fine-tune the retract end position during initial machine commissioning to achieve precise mechanical alignment.
Variable Diverter Stops
Adjust the physical stop distance on the fly to handle different package lengths moving through a conveyor system.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-50 the Right Cylinder?
Choose this 32 mm bore when you need 402 N push force at 0.5 MPa and on-the-fly end-position tuning for product size changes. If your setup requires less force, stepping down is not an option below 32 mm in this series, but stepping up to a 40 mm bore yields 628 N. The adjustable stroke is ideal for variable end stops, whereas a fixed SAI cylinder is better for rigid, unchanging stops. To replace an ISO 15552 cylinder, match the 32 mm bore, 70 mm stroke, 50 mm adjustment, PT ports, and your required mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
For any load-holding requirements without continuous live air, note that this rear adjuster and the air cushions only decelerate the stroke; they do not brake or hold the load. You must use an external rod lock, a pilot-operated check valve, or switch to an AirTAC SAIL or BSAI cylinder for secure clamping.
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 SAIJ32AX70-50 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster acts as an external stopper that lets you shorten the 70 mm nominal stroke by up to 50 mm. This creates a usable travel window of 20-70 mm, allowing you to set the exact retract position without adding external stops.
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