Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-40S 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 SAIJ32BX120-40S
The AirTAC SAIJ32X120-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 402N of push force at 0.5 MPa and features a 120mm nominal stroke that can be fine-tuned down by up to 40mm, creating an 80-120mm usable travel window. This built-in adjustability allows you to dial in exact end positions during commissioning without adding external stops.
This SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It uses PT tapered ports and offers variable air cushions at both ends to manage deceleration. Note that the rear adjuster acts only as a travel stop, not a load-holding lock; maintaining position requires continuous air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-40S |
|---|---|
| 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 SAIJ32BX120-40S
| 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 SAIJ32BX120-40S Is Used
Product Changeovers
Quickly adjust the 80-120mm travel window to accommodate different product sizes on a packaging line without swapping the cylinder.
Machine Commissioning
Fine-tune the exact retract end-stop during initial setup to perfect sensor alignment and gripping positions.
Variable End Stops
Use the rear screw to set precise positioning limits for delicate assembly tasks requiring 402N of push force.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-40S the Right Cylinder?
Choose this 32mm bore when you need 402N push force at 0.5 MPa with on-the-fly end-position tuning. If your application requires less force, stepping down is not an option in this size range, but if you need substantially more thrust, the 40mm bore provides 628N. The adjustable stroke is ideal for product changeovers on a line, whereas a fixed SAI cylinder is better for dedicated single-purpose tasks. When replacing an ISO 15552 cylinder, match the 32mm bore, 120mm stroke, 40mm adjustment, PT ports, and the -S magnet.
Because the 120mm stroke is relatively short for the 32mm bore, side-load risks are minimal, but the 12mm rod and M10x1.25 thread still require external guiding if subjected to lateral forces. For load-holding without live air pressure, consider the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ32BX120-40S FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At 0.7 MPa, the push force increases to 563N.
The rear adjuster allows you to shorten the 120mm nominal stroke by up to 40mm, providing an adjustable travel window of 80-120mm. It functions as a physical stop and does not lock the load without air pressure.
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