Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S
The AirTAC SAIJ32X650-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 650 mm travel by up to 40 mm. This yields a usable stroke window of 610 to 650 mm, enabling precise end-position tuning at commissioning without swapping hardware. Within its 32 mm bore, it generates 402 N of push force and 345 N of pull force at 0.5 MPa. The integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the extruded aluminum barrel's dual sensor grooves.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and utilizes PT tapered port threads (G1/8). The built-in adjustable air cushions at both ends work alongside the rear stopper to decelerate the piston smoothly. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true load-holding without continuous air, consider the SAIL or BSAI series.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 650 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 SAIJ32AX650-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×650 | 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 SAIJ32AX650-40S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 610 and 650 mm during commissioning to accommodate different product sizes without changing the cylinder.
Machine Changeover
Quickly adjust the rear stopper on the SAIJ cylinder when switching a packaging line to a new format, avoiding the need to bolt on external stops.
Long-Stroke Positioning
Use the 650 mm travel to move a sub-assembly across a workstation, relying on the built-in air cushion and rear screw to fine-tune the final resting position.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-40S the Right Cylinder?
Choose this 32 mm bore model when an application requires precise variable end-stops within a 610-650 mm travel window. If your process demands greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa, whereas dropping to a smaller bore would sacrifice the necessary output. The adjustable-stroke design is selected over a fixed SAI cylinder when you need on-the-fly fine-tuning during machine setup or product changeovers rather than relying on external mechanical stops.
As a dimensionally interchangeable ISO 15552 profile cylinder, it replaces corresponding ISO cylinders using the same mounting footprint (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 650 mm stroke is relatively long for a 12 mm rod, it is highly recommended to use an external guide to prevent excessive side-loading and rod deflection. Note that this unit does not function as a lock; the adjuster only sets the travel end.
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 SAIJ32AX650-40S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 650 mm nominal length, providing an adjustable travel window of 610 to 650 mm. It acts as a mechanical stop and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ32X650-40-S generates 402 N of push force and 345 N of pull force. It can deliver up to 724 N of push force at its maximum rated pressure of 0.9 MPa.
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