Airtac SAIJ50 Adjustable Cylinder SAIJ50AX350-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX350-75S 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 SAIJ50AX350-75S
The AirTAC SAIJ50X350-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 275 to 350 mm. Delivering 982 N of push force at 0.5 MPa, it features a SUS420J2 stainless steel rod for enhanced corrosion resistance and operates at speeds of 30-800 mm/s. An integrated magnet allows seamless position detection.
Because this 350 mm stroke exceeds typical compact lengths, the robust 20 mm rod diameter helps manage side loads, though an external guide remains essential for unsupported masses. The rear stopper mechanism lets you dial in the exact retract end-position during commissioning without adding external stops. This adjuster acts purely as a travel stop, not a lock, so continuous air pressure is required to hold the load.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX350-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX350-75S |
|---|---|
| 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 SAIJ50AX350-75S
| 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 SAIJ50AX350-75S Is Used
Product Changeover
Quickly fine-tune the 275-350 mm travel window during line changeovers to accommodate different carton or part sizes without swapping hardware.
Variable End Stops
Ideal for diverter gates on conveyors where the retract position must be adjusted on the fly to route varying package widths accurately.
Commissioning Calibration
Allows maintenance teams to dial in the exact retract distance during initial machine setup, preventing hard crashes and simplifying calibration.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX350-75S the Right Cylinder?
Select this 50 mm bore when an application requires precise end-position tuning on the fly, such as accommodating varying product sizes on a packaging line. If your setup needs less thrust, stepping down to a 40 mm bore yields 628 N at 0.5 MPa; if more power is necessary, a 63 mm bore provides 1559 N. For fixed-travel tasks without the need for commissioning adjustments, the standard SAI cylinder is a simpler alternative.
When matching this adjustable cylinder for an ISO 15552 replacement, verify the 50 mm bore, 350 mm nominal stroke, 75 mm adjustment range, PT tapered port threads, and the -S magnet requirement. Given the 350 mm stroke, ensure your mounting configuration—whether Basic, FA, LB, TC, FTC, TCM1, or TCM2—incorporates an external guide to prevent rod binding under heavy lateral 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 SAIJ50 Adjustable Cylinder SAIJ50AX350-75S FAQ
The rear adjuster acts as a mechanical stopper that lets you trim the effective stroke back by up to 75 mm. This creates a usable travel window of 275 to 350 mm, allowing you to fine-tune the end position at commissioning without changing the cylinder.
At 0.5 MPa, it provides 982 N of push force and 825 N of pull force. If operated at 0.7 MPa, the push force increases to 1374 N.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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