Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-75S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-75S 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 SAIJ32BX850-75S
The AirTAC SAIJ32X850-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 775 to 850 mm usable travel window for exact end-position tuning. It delivers 563N of push force at 0.7 MPa and includes a SUS304 stainless steel rod for corrosion resistance. Equipped with a magnet for position detection, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors.
This model uses a PT tapered G1/8 port and M10x1.25 rod thread. Because the 850 mm stroke approaches the limits for a 32 mm bore, the 12 mm rod diameter requires careful alignment to prevent excessive side loading. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster functions strictly as a travel stop, not a load-holding lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-75S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-75S |
|---|---|
| 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 SAIJ32BX850-75S
| 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 SAIJ32BX850-75S Is Used
Variable End-Stop Tuning
Dial in the exact retract position within a 775 to 850 mm window during machine commissioning without adding external stopper blocks.
Product Size Changeovers
Quickly adapt the travel distance on a packaging line when product dimensions change, using the rear adjustment screw.
Sensor-Ready Positioning
Leverage the built-in magnet to trigger CMSE or DMSE sensors along the dual barrel grooves for precise motion control.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-75S the Right Cylinder?
Selecting this adjustable-stroke model over a fixed SAI cylinder is ideal when machine setups require variable end-stops or frequent product-size changeovers without physically swapping the actuator. If your application requires less force, stepping down is not an option for this stroke length; instead, consider a 40 mm bore (628N at 0.5 MPa) if rigidity is needed. For higher force demands, a 50 mm bore provides 982N at 0.5 MPa.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 850 mm stroke, up to 75 mm adjustment, PT G1/8 port, and -S magnet. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 850 mm, an external guide is highly recommended to support the load and prevent rod binding. Note that the rear adjuster and air cushions do not hold the load without live air; for true load-holding, use an external rod lock or pilot-operated check valve.
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 SAIJ32BX850-75S FAQ
At 0.7 MPa operating pressure, this 32 mm bore cylinder provides 563N of push force and 345N of pull force at 0.5 MPa.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke by up to 75 mm, creating a 775 to 850 mm usable travel window. It does not lock the load without live air pressure.
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