Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 850mm 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
- Stroke850 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40
The AirTAC SAIJ32X850-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 810 to 850 mm. Delivering a push force of 563 N at 0.7 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads.
The integrated rear stopper screw enables precise end-position calibration at commissioning without adding external stops. It features adjustable air cushions at both ends, but note that this mechanism acts purely as a travel stop and deceleration device—it does not hold the load dynamically without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 850 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 SAIJ32AX850-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×850 | 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 SAIJ32AX850-40 Is Used
Machine Setup Calibration
Dial in the exact 810 to 850 mm end-stop during initial commissioning without physically swapping out the cylinder or adding external mechanical stops.
Product Changeover Lines
Quickly trim the stroke back by up to 40 mm to accommodate varying package sizes on a conveyor, ensuring precise positioning for each new product run.
Long-Stroke Assembly
Utilize the full 850 mm travel for extended reach operations while retaining the ability to fine-tune the retracted position for delicate component placement.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-40 the Right Cylinder?
Choose this 32 mm bore when an application requires 563 N of push force at 0.7 MPa and a variable end-stop within a long 850 mm travel window. If you need less force, dropping down to a 25 mm bore might suffice, but stepping up to a 40 mm bore provides 879 N of push force for heavier payloads. The 40 mm adjustment range is ideal for product changeovers on a line where exact end-of-stroke positioning fluctuates slightly.
Because the 850 mm stroke is quite long, the 12 mm diameter rod and M10x1.25 thread are susceptible to side-loading; an external guide rail is highly recommended to prevent binding. For true load-holding without continuous air pressure, a standard SAIJ is insufficient—consider the AirTAC SAIL or BSAI series instead. This model is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mountings.
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 SAIJ32AX850-40 FAQ
At an operating pressure of 0.7 MPa, this 32 mm bore cylinder generates a push force of 563 N and a pull force of 345 N. It can achieve a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 850 mm stroke by up to 40 mm, creating a usable travel window of 810 to 850 mm. This stopper only sets the end position and decelerates the load; it does not lock or hold the load without live air pressure.
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