Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40S 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 SAIJ32BX850-40S
The AirTAC SAIJ32X850-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 850 mm stroke with a 40 mm adjustment range, yielding an exact usable travel window of 810 to 850 mm. Operating at 0.5 MPa, it delivers 402 N of push force and 345 N of pull force, making it suited for lighter-duty positioning tasks.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and features a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides. Because the 850 mm stroke is long relative to the 32 mm bore, the 12 mm rod and M10x1.25 thread require external guiding to prevent excessive side-loading.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40S |
|---|---|
| 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 SAIJ32BX850-40S
| 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 SAIJ32BX850-40S Is Used
Machine Changeover
Dial in the exact 810 to 850 mm retract position during product size changes on a packaging line without adding external stops.
End-Position Tuning
Fine-tune the final end-stop at machine commissioning to compensate for mechanical tolerance stack-up over a long 850 mm travel.
Light-Force Positioning
Leverage the 402 N push force to move light payloads precisely, using the rear screw to dial back the stroke up to 40 mm as needed.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40S the Right Cylinder?
Choose this 32 mm bore cylinder when your application requires fine-tuning the retract end-position during commissioning without swapping out physical components. The rear adjuster acts purely as a travel stop for deceleration; it does not hold the load without live air pressure. For fail-safe load holding without continuous air, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
When replacing an ISO 15552 cylinder, verify the 850 mm stroke, 40 mm adjustment, PT tapered port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting the FB, CA, CB, and CR mounts. If your changeover requires higher force, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa.
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 SAIJ32BX850-40S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40 mm. This provides a usable travel window of 810 to 850 mm, allowing precise end-position tuning at commissioning without changing the cylinder.
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 deliver up to 724 N of push force at 0.9 MPa.
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