Airtac SAIJ50 Adjustable Cylinder SAIJ50X350-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50X350-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 350mm 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
- Stroke350 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 SAIJ50X350-75
The AirTAC SAIJ50X350-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 350 mm stroke that can be dialed back by up to 75 mm, yielding a highly flexible 275-350 mm usable travel window for precise end-position tuning during commissioning.
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore profile cylinder utilizes a G1/4 PT port and a 20 mm carbon steel rod. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE solid-state sensors, while adjustable air cushions at both ends manage deceleration.
Airtac SAIJ50 Adjustable Cylinder SAIJ50X350-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50X350-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 SAIJ50X350-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×350 | 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 SAIJ50X350-75 Is Used
Variable End-Stop Tuning
Dial in the exact 275-350 mm retraction point during machine commissioning to accommodate different product lengths without adding external physical stops.
Product Size Changeovers
Quickly adjust the effective stroke on packaging lines when switching between different carton sizes, ensuring precise positioning without changing the cylinder.
Setup Calibration
Fine-tune the end-of-stroke position on welding or clamping fixtures to compensate for mechanical wear or tooling variations over time.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50X350-75 the Right Cylinder?
Choose this 50 mm bore adjustable-stroke cylinder when your machine setup requires variable end stops or product-size changeovers without physically swapping out the entire actuator. If your application demands less force, stepping down to a 40 mm bore provides 628 N of push at 0.5 MPa, whereas moving up to a 63 mm bore yields 1559 N.
The rear screw acts purely as a mechanical travel stop to fine-tune the retraction point; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series. Because the 350 mm stroke is relatively long, the 20 mm rod and M16x1.5 thread will still experience leverage forces, so an external guide rail is recommended to prevent side-loading damage. This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ50X350-75 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw allows you to shorten the 350 mm nominal stroke by up to 75 mm, creating a 275-350 mm travel window. This stopper only limits the end position and does not lock the load without live air.
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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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