Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 135mm 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
- Stroke135 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50
The AirTAC SAIJ32X135-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 135 mm stroke that can be dialed back by up to 50 mm, creating an exact 85-135 mm usable travel window for precise end-position tuning at commissioning. Delivering 402 N of push force at 0.5 MPa, it fits compact automation setups requiring variable endpoints.
This variant features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to drop in CMSE reed or DMSE electronic switches if a magnet is added later. The rear stopper screw acts purely as a travel limit and does not lock the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 135 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 SAIJ32BX135-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×135 | 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 SAIJ32BX135-50 Is Used
Product Changeovers
Dial in the 85-135 mm travel window during line changeovers to accommodate different product sizes without physically replacing the actuator.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact positioning, eliminating the need for external mechanical stops.
Corrosive Environments
Leverage the SUS304 stainless steel rod for light-duty pushing tasks in environments where standard carbon steel rods might corrode.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX135-50 the Right Cylinder?
Choose this 32 mm bore when an application demands 402 N push force at 0.5 MPa but requires flexibility in the final end-stop position. If your setup needs less force, stepping down is not an option in this series, but stepping up to a 40 mm bore yields 628 N. The 50 mm adjustment range is perfect for product changeovers, letting you shift the retract distance without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a brake.
To match this exact configuration for an ISO 15552 replacement, specify a 32 mm bore, 135 mm stroke, 50 mm adjustment, PT port threads, SUS304 rod material, and no magnet. Because the stroke is under 300 mm, side-load stress is minimal, but always ensure the M10x1.25 rod thread is aligned to avoid binding. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ32BX135-50 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
The rear adjuster screw allows you to shorten the effective travel from the nominal 135 mm down to as little as 85 mm. This creates a 50 mm adjustable window for setting the exact retract end-position without changing the cylinder.
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