Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-75 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 SAIJ50AX240-75
The AirTAC SAIJ50X240-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 240 mm travel by up to 75 mm. This creates a usable end-position window of 165 to 240 mm, providing immense flexibility during machine commissioning or product changeovers without swapping hardware. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
Built with an SUS420J2 stainless steel rod for enhanced corrosion resistance, this unit features PT tapered port threads (G1/4) and variable air cushions at both ends. The rear adjustment screw acts purely as a travel stop to fine-tune the retract position, meaning it cannot hold a load without continuous live air pressure. For position-holding requirements, an external rod lock or the AirTAC SAIL series is required.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-75 |
|---|---|
| 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 SAIJ50AX240-75
| 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 SAIJ50AX240-75 Is Used
Product Changeover
Quickly reconfigure the retract distance from 165 to 240 mm on packaging lines handling varying container sizes without changing the cylinder.
Machine Commissioning
Fine-tune the exact end-stop position during initial setup to perfect tooling alignment, avoiding the need for external shims or stopper blocks.
Adjustable Ejection
Dial in the precise ejection stroke for machined parts of different lengths, using the 982 N push force to reliably clear the work area.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-75 the Right Cylinder?
Selecting this 50 mm bore cylinder makes sense when your application demands a wide tuning range; the 75 mm adjuster lets you accommodate multiple product sizes on a single line, avoiding the need to inventory several fixed-stroke SAI variants. If your setup requires less force, stepping down to a 40 mm bore yields 628 N push at 0.5 MPa, while moving up to a 63 mm bore provides 1559 N.
Because the 240 mm stroke exceeds the 300 mm threshold requiring external guidance, the standard 20 mm rod diameter handles moderate side loads, but an external guide rail is recommended for heavy off-center loads. To achieve a true ISO 15552 replacement match, verify the 50 mm bore, 240 mm stroke, PT port threads, and your required mounting style from the available SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or 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 SAIJ50 Adjustable Cylinder SAIJ50AX240-75 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it achieves a peak push force of 1767 N.
The rear adjuster screw allows you to shorten the effective stroke from its 240 mm nominal length by up to 75 mm. This provides a usable travel window of 165 to 240 mm, acting as a mechanical stop to set the precise retract position without altering the cylinder itself.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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