Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50
The AirTAC SAIJ32X70-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 20 to 70 mm, allowing you to dial back the nominal 70 mm stroke by up to 50 mm during commissioning. Delivering 345 N of pull force at 0.5 MPa, it handles precise light-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides, and this configuration features a SUS304 stainless steel rod for enhanced corrosion resistance along with PT tapered port threads.
The rear adjustment screw acts purely as a mechanical stop to set the retract end-position and cannot hold a load without live air pressure. For position holding without continuous air, an external pilot-operated check valve or a SAIL locking cylinder is required. This model uses the standard SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) and operates at speeds between 30 and 800 mm/s.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 70 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 SAIJ32BX70-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SAIJ32BX70-50 Is Used
Machine Changeovers
Dial in the 20-70 mm travel window during product size transitions without swapping out the entire cylinder assembly.
End-Position Tuning
Use the rear stopper to fine-tune the retract end position precisely during initial commissioning or setup adjustments.
Light-Duty Positioning
Achieve accurate 345 N pull force movements in small-bore assembly stations where exact stroke limits are critical.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-50 the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa. If your setup needs significantly more thrust, stepping up to the 40 mm bore yields 528 N of pull force. The 50 mm adjustment range is ideal for machine changeovers where exact end-of-stroke positioning varies between product sizes, eliminating the need to physically swap cylinders or add external stops compared to a fixed SAI model. When matching ISO 15552 interchangeability, confirm the 32 mm bore, 70 mm stroke, 50 mm adjustment, PT ports, and SUS304 rod material. Given the 12 mm rod diameter and M10x1.25 thread, ensure adequate guiding for any offset loads.
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 SAIJ32BX70-50 FAQ
The nominal stroke is 70 mm, but the 50 mm rear adjuster allows you to shorten the effective travel to anywhere within a 20 to 70 mm window.
No, the rear adjuster is a travel stop, not a lock. The cylinder requires live air pressure to maintain position; for true load-holding, consider a SAIL or BSAI cylinder.
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