Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 450mm 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
- Stroke450 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 SAIJ50AX450-100
The AirTAC SAIJ50X450-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 982N push force at 0.5 MPa and features a PT tapered port thread alongside a SUS420J2 stainless steel rod. The built-in rear stopper allows you to trim the nominal 450mm travel back by up to 100mm, creating a highly flexible 350-450mm usable stroke window.
This adjustable design eliminates the need to swap cylinders or bolt on external stops during machine commissioning or product changeovers. It retains the standard extruded aluminum barrel with sensor grooves on both sides, but utilizes a reduced mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) omitting FB, CA, CB, and CR. Remember that the rear adjuster acts only as a travel stop and deceleration aid, not a lock; it cannot hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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 SAIJ50AX450-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×450 | 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 SAIJ50AX450-100 Is Used
Variable End-Position Tuning
Dial in the exact 350-450mm travel distance during machine commissioning to accommodate different product sizes without physically replacing the cylinder.
Machine Changeover Setup
Quickly shorten the retract stroke by up to 100mm when switching a production line to a new format, saving downtime on external mechanical stop adjustments.
Conveyor Diverter Adjustment
Fine-tune the diverter arm endpoint on packaging lines to handle varying carton widths precisely using the rear stopper screw.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-100 the Right Cylinder?
Choose this 50mm bore cylinder when your application requires a 982N push force at 0.5 MPa (or 1374N at 0.7 MPa) combined with a variable end-stop. If your process needs less force, the 40mm bore offers 628N at 0.5 MPa, whereas heavier loads might require the 63mm bore providing 1559N. The 100mm adjustment range is perfect for setups requiring frequent fine-tuning of the end position without changing hardware.
Because this 450mm stroke is relatively long, the 20mm diameter rod and M16x1.5 thread will experience greater side loads; an external guide is recommended to prevent premature wear. To replace this unit, match the 50mm bore, 450mm stroke, 100mm adjustment, PT port thread, SUS420J2 rod material, and the specified mounting style. For load-holding requirements without live pressure, consider the SAIL or BSAI series instead, as this adjuster is not a brake.
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 SAIJ50AX450-100 FAQ
At 0.5 MPa it provides a 982N push force and 825N pull force. At 0.7 MPa, the push force increases to 1374N. The operational speed range is 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its nominal 450mm down to 350mm. It sets the travel end and deceleration point but does not lock the load without live air pressure.
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