Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40 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 SAIJ32BX850-40
The AirTAC SAIJ32X850-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 810 to 850 mm, allowing you to dial back the nominal 850 mm stroke by up to 40 mm during commissioning without swapping the barrel or adding external stops. In the compact 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This SKU is built with a SUS304 stainless steel rod (option B) for corrosion resistance and uses PT tapered port threads on its G1/8 supply connections. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, this cylinder requires live air to maintain its position and does not function as a load lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40 |
|---|---|
| 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 SAIJ32BX850-40
| 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 SAIJ32BX850-40 Is Used
Commissioning End-Tuning
Dial in the exact 810 to 850 mm end-position at machine setup without machining custom spacers or changing the cylinder.
Product Size Changeover
Quickly adjust the rear stopper by up to 40 mm to accommodate varying package lengths on a packaging line.
Variable End-Stop Positioning
Use the external screw stopper to set precise retract positions for multiple tooling operations on a shared fixture.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX850-40 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke model when your machine setup requires precise end-position tuning across an 810 to 850 mm travel window. If your application needs greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa, whereas dropping below 32 mm sacrifices the M10x1.25 rod threading and 27 mm cushion length. The rear screw stopper provides variable end-stop positioning for product changeovers, a distinct advantage over a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 850 mm stroke, 40 mm adjustment range, PT port threads, and your required mounting interface. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits FB, CA, CB, and CR. For load-holding without continuous air pressure, use an external rod lock or pilot-operated check valve, or select the SAIL or BSAI series instead. Since the 850 mm stroke is long relative to the 12 mm rod diameter, an external guide is strongly recommended to prevent rod deflection and excessive side loading.
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 SAIJ32BX850-40 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that trims the effective travel. For this 850 mm stroke model, you can fine-tune the usable stroke window down to 810 mm without replacing the cylinder.
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