Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40
The AirTAC SAIJ32X155-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 115 to 155 mm, allowing you to dial in the exact retract position during commissioning without adding external stops. In the 32 mm bore class, it delivers 402 N of push force at 0.5 MPa and 724 N at 0.9 MPa.
This variant is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the standard variable air cushions at both ends work alongside the rear mechanical stopper to manage end-of-stroke deceleration.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 155 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 SAIJ32BX155-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×155 | 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 SAIJ32BX155-40 Is Used
Commissioning End-Stop Tuning
Fine-tune the retract position by up to 40 mm during machine setup to hit exact datum points without machining external stop blocks.
Product Size Changeover
Quickly adapt a packaging line to different carton lengths by dialing back the stroke within the 115-155 mm window.
Light Assembly Positioning
Position small parts precisely using the 32 mm bore's 402 N push force at 0.5 MPa while benefiting from the SUS304 rod's corrosion resistance.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-40 the Right Cylinder?
Choose this 32 mm bore when your application requires up to 724 N of push force at 0.9 MPa; if you need less force, dropping to a smaller bore is advisable, while heavier loads require stepping up to the 40 mm bore which yields 628 N at 0.5 MPa. An adjustable stroke is ideal for machines that undergo frequent product changeovers, as the 40 mm trim range allows rapid reconfiguration of the end position without swapping the cylinder.
To replace this unit, match the 32 mm bore, 155 mm nominal stroke, 40 mm adjustment range, PT G1/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ32BX155-40 FAQ
A rear-mounted screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 115 to 155 mm, enabling fine-tuning of the end position at commissioning without swapping cylinders.
At 0.5 MPa, the 32 mm bore provides 402 N of push force and 345 N of pull force. At 0.9 MPa, the push force increases to 724 N.
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