Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40S 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 SAIJ32BX70-40S
The AirTAC SAIJ32X70-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 70 mm stroke that can be fine-tuned down by up to 40 mm, yielding a highly versatile 30-70 mm usable travel window. Delivering 402 N of push force at 0.5 MPa, it fits compact automation setups requiring exact end-position calibration.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides, directly supporting AirTAC CMSE reed and DMSE electronic solid-state switches without extra brackets.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40S |
|---|---|
| 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 SAIJ32BX70-40S
| 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 SAIJ32BX70-40S Is Used
Product Changeovers
Dial in the 30-70 mm travel window during packaging format changes to accommodate varying container sizes without replacing hardware.
Machine Setup
Fine-tune the retract end-position at commissioning to achieve precise alignment, avoiding the need for external stopper blocks.
Lab Automation
Leverage the SUS304 stainless steel rod and adjustable stroke for sterile, compact testing fixtures requiring exact travel limits.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40S the Right Cylinder?
Choose this 32 mm bore when an application demands on-the-fly end-stop tuning without swapping cylinders, as its 40 mm adjustment screw allows rapid product changeovers. If your setup requires less force, stepping down is not an option below 32 mm in this series, but if you need more thrust, the 40 mm bore yields 628 N at 0.5 MPa. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ32X70-40-S cannot hold a load without live air pressure, so utilize a SAIL or BSAI cylinder if fail-safe load holding is required.
To match this exact ISO 15552 interchangeable replacement, specify: 32 mm bore, 70 mm nominal stroke, 40 mm adjustment range, PT tapered port threads, SUS304 (B) rod material, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
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 SAIJ32BX70-40S 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 screw allows you to shorten the effective stroke by up to 40 mm. With the 70 mm nominal stroke, this creates an adjustable travel window of 30 to 70 mm to fine-tune the retract position during setup.
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