Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75
The AirTAC SAIJ200X450-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust for heavy-duty automation. It yields a 15708N push force at 0.5 MPa and features a 450mm nominal stroke that can be fine-tuned down by up to 75mm, establishing a precise 375-450mm usable travel window. This built-in adjustability allows operators to dial in exact retract end positions during commissioning without adding external stops.
This heavy-capacity actuator features a robust 40mm piston rod with an M36x2 thread, engineered to withstand substantial side loads. It utilizes a SUS420J2 stainless steel rod material for enhanced durability against moisture and wear. The extruded aluminum barrel incorporates sensor grooves on both sides, and because no magnet is specified, it is configured for standard non-sensing operation.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | 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 SAIJ200 Adjustable Cylinder SAIJ200AX450-75 Is Used
Heavy Press Tuning
Dial in the exact 375-450mm end position for large metal-forming or press operations without machining new hard stops.
Product Changeover
Quickly adjust the retract distance on automated assembly lines when switching between large product variants.
Heavy Load Positioning
Move substantial payloads with up to 15708N of thrust while fine-tuning the stopping point to match fixture tolerances.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75 the Right Cylinder?
Selecting this 200mm bore actuator is ideal when an application demands extreme force—up to 15708N push at 0.5 MPa—that smaller neighbor bores cannot provide, such as a 160mm bore yielding 10053N. The adjustable 375-450mm travel window is specifically advantageous for heavy machinery requiring precise end-stop tuning during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder. To match your exact hardware, specify the PT tapered port thread, the SUS420J2 rod material, and the required mounting accessory from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
Because this model features a 450mm stroke, the extended 40mm rod will experience amplified leverage forces during operation; an external guide mechanism is strongly recommended to prevent premature seal wear. Furthermore, the rear adjuster functions purely as a travel stop and does not hold the load without live air pressure. For applications requiring true load-holding without continuous pneumatic pressure, an external pilot-operated check valve or an AirTAC BSAI clamp-lock cylinder is necessary.
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 SAIJ200 Adjustable Cylinder SAIJ200AX450-75 FAQ
At 0.5 MPa, this 200mm bore cylinder provides a push force of 15708N and a pull force of 15080N. The operational speed range for this large-bore actuator is 30-500 mm/s.
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke by up to 75mm, creating a usable travel window of 375-450mm. It only sets the end position and does not lock the load without continuous air pressure.
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