Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 240mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke240 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30
The AirTAC SAIJ50X240-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 982N push force at 0.5 MPa and uses a G1/4 port. The built-in rear adjusting screw allows you to shorten the effective travel, creating a precise 210-240mm usable stroke window without needing external stops.
This model features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads. It includes variable air cushions at both ends to decelerate the load smoothly. The extruded aluminum barrel offers sensor grooves on both sides, ready for CMSE reed or DMSE electronic sensors if a magnet is added later.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×240 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX240-30 Is Used
Variable End-Stop Positioning
Dial in the retract position within a 210-240mm window during commissioning to perfectly align parts without machining custom spacers.
Product Size Changeover
Quickly adapt automated lines to new product lengths by adjusting the rear stopper screw, minimizing downtime between production runs.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial machine assembly to guarantee precise mechanical alignment without replacing the cylinder.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30 the Right Cylinder?
Choose this 50mm bore when your application requires roughly 982N of push force at 0.5 MPa, stepping up from a 40mm bore (628N) for heavier handling, or down from a 63mm bore (1559N) to save space. The adjustable stroke is perfect for machine setup and product changeover, allowing you to fine-tune the retract end position on the fly rather than swapping a fixed-stroke SAI cylinder.
For drop-in interchangeability, match the 50mm bore, 240mm stroke, 30mm adjustment range, PT port threads, and standard mounting options. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR brackets. Since the stroke is 240mm, ensure proper external guiding to prevent excessive side-loading on the 16mm rod. Remember, the rear adjuster is a travel stop, not a lock; for load-holding without live air, consider the SAIL or BSAI series.
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 SAIJ50 Adjustable Cylinder SAIJ50AX240-30 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that trims the nominal 240mm stroke back by up to 30mm. This creates a usable travel window of 210 to 240mm, allowing you to set the exact retract end position during commissioning.
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