Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20S 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 SAIJ32BX850-20S
The AirTAC SAIJ32X850-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 830 to 850 mm. Built with a SUS304 stainless steel rod, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa, operating at speeds between 30 and 800 mm/s. The PT tapered port threads match the standard G1/8 interface for this bore size.
Because the nominal 850 mm stroke approaches the maximum standard limit of 1000 mm for this bore, the external adjusting screw allows precise end-position tuning during commissioning without adding external stops. The included magnet enables position detection with CMSE reed or DMSE electronic sensors, while the extruded aluminum barrel maintains standard ISO 15552 mounting dimensions.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20S |
|---|---|
| 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 SAIJ32BX850-20S
| 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 SAIJ32BX850-20S Is Used
Machine Setup Changeover
Dial in the exact retraction point within the 830-850 mm range during line changeovers without physically replacing the actuator.
Variable End-Stop Positioning
Fine-tune the stopping distance of pushed items on a long conveyor section by adjusting the rear screw up to 20 mm.
Sensor-Driven Sorting
Leverage the built-in magnet with DMSE electronic sensors to confirm actuation states at high cycling speeds up to 800 mm/s.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20S the Right Cylinder?
Select this 32 mm bore cylinder when an application requires fine-tuning of the retracted end position within an 830 to 850 mm window, avoiding the need to swap physical components during product changeovers. If your setup requires greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. For lower force needs, dropping down is an option, but the 32 mm bore provides a compact balance of power and speed.
As an ISO 15552 interchangeable cylinder, replacement requires matching the 32 mm bore, 850 mm stroke, 20 mm adjustment, PT G1/8 port, and -S magnet. Given the 850 mm stroke length, an external guide is strongly recommended to prevent excessive rod side-loading. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air, so a SAIL or BSAI lock cylinder is needed for position holding.
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 SAIJ32BX850-20S FAQ
The rear adjusting screw acts as an external stopper that lets you shorten the effective stroke by up to 20 mm, providing an adjustable travel window of 830 to 850 mm. It allows you to fine-tune the end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, this double-acting cylinder provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
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