Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20 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 SAIJ32BX850-20
The AirTAC SAIJ32X850-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates an 830 to 850 mm usable travel window. Delivering 402 N of push force at 0.5 MPa, it is equipped with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread.
This extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear stopper screw allows you to fine-tune the end position at commissioning without adding external stops, while the M10x1.25 rod thread handles moderate side loads effectively.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20 |
|---|---|
| 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 SAIJ32BX850-20
| 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 SAIJ32BX850-20 Is Used
Variable End-Stop Tuning
Dial in the exact retract distance within the 830-850 mm window during machine commissioning to accommodate different product lengths without swapping hardware.
Product Changeover
Quickly adjust the stroke stop on packaging lines when switching between box sizes, ensuring precise positioning without re-mounting the actuator.
Long-Travel Positioning
Utilize the 850 mm reach for extending probes or tooling across a wide workstation, relying on the fine 20 mm adjustment for final contact calibration.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-20 the Right Cylinder?
Choose this 32 mm bore when you need precise retract tuning over a long 850 mm travel, stepping up to a 40 mm bore (628 N push at 0.5 MPa) only if higher thrust is required. The adjustable stroke is ideal for product changeovers, whereas a fixed SAI cylinder suits static end-stops. To match this ISO 15552 replacement exactly, specify the 850 mm stroke, 20 mm adjustment, PT port, SUS304 rod, and no magnet.
Because the stroke is 850 mm, the unsupported piston rod is susceptible to deflection; always use an external guide to prevent binding. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air—use an external rod lock or SAIL cylinder for fail-safe load 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 SAIJ32BX850-20 FAQ
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 a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the nominal 850 mm stroke by up to 20 mm, creating an adjustable travel window between 830 and 850 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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