Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-75 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 SAIJ50AX450-75
The AirTAC SAIJ50X450-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a 450mm nominal stroke that can be fine-tuned down by up to 75mm, yielding a usable travel window of 375-450mm. This built-in adjustability allows you to dial in exact end positions during commissioning without swapping hardware.
This SKU is configured with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads with a G1/4 connection. The extruded aluminum barrel includes sensor grooves on both sides, though this specific unit lacks a magnet for internal switches. The rear screw acts purely as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-75 |
|---|---|
| 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 SAIJ50AX450-75
| 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 SAIJ50AX450-75 Is Used
Product Changeover
Leverage the 375-450mm travel window to rapidly adapt end-stops for varying product lengths on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the exact retract position during commissioning using the rear adjuster, eliminating the need to bolt on physical spacers.
Long-Stroke Positioning
Move loads across a 450mm span while relying on the built-in stop to set precise deceleration endpoints for varying tooling heights.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX450-75 the Right Cylinder?
Choose this 50mm bore when an application requires roughly 982N of push force at 0.5 MPa, stepping up from a 40mm bore (628N) or down from a 63mm bore (1559N). The 75mm adjustment range is ideal for product-size changeovers on a line, giving you a 375-450mm window to accommodate varying part lengths without adding external stops. For an exact fixed end-position, a standard SAI cylinder is simpler, but the SAIJ shines when minor mechanical tuning is required.
Because the stroke is 450mm, the 20mm rod diameter should not be relied upon to absorb heavy side loads; an external guide rail is recommended to prevent premature seal wear. To replace this cylinder with another ISO 15552 unit, match the 50mm bore, 450mm stroke, 75mm adjustment, PT port thread, and the SUS420J2 rod material. Note that SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR. If you need true load-holding without air pressure, look to the SAIL or BSAI series instead.
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 SAIJ50AX450-75 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 75mm. This provides a usable travel window of 375-450mm, allowing you to fine-tune the end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ50X450-75 provides 982N of push force and 825N of pull force. It can reach up to 1767N push force at 0.7 MPa.
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