Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75S 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 SAIJ200AX450-75S
The AirTAC SAIJ200X450-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 375 to 450 mm. It delivers massive thrust, generating 28274N of push force and 21991N at 0.7 MPa, making it ideal for heavy-duty pressing. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant is equipped with a SUS420J2 stainless steel rod for superior corrosion resistance and carries the -S magnet for seamless detection via CMSE reed or DMSE electronic sensors. Fluid ports are PT tapered G3/4 threads. The rear stopper screw allows precise end-position tuning at commissioning without adding external stops, though it acts only as a travel limiter and does not hold the load without live air.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75S |
|---|---|
| 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 SAIJ200AX450-75S
| 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 SAIJ200AX450-75S Is Used
Heavy Press Tuning
Dial in the exact 375 to 450 mm end-position for heavy metal forming or stamping presses without machining custom external spacers.
Product Line Changeover
Quickly adjust the stroke by up to 75 mm during automated product size transitions on a packaging line to accommodate different pallet heights.
Industrial Positioning
Move heavy 28000N loads into exact final positions using the fine rear adjustment screw, ensuring perfect alignment before final clamping.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-75S the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme force that a 160 mm bore cannot provide, as the 160 mm bore maxes out at 18095N push at 0.9 MPa compared to the 28274N available here. The 75 mm adjustment range is highly beneficial for product changeovers, allowing operators to dial back the 450 mm nominal stroke to 375 mm on the fly without swapping the cylinder. For any stroke of 450 mm, the 40 mm rod diameter handles significant loads, but an external guide is recommended to prevent side-load damage.
Because the SAIJ rear adjuster is a stop and not a lock, this cylinder will not hold its position without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ200AX450-75S FAQ
At the maximum operating pressure of 0.9 MPa, this 200 mm bore cylinder generates 28274N of push force and 22680N of pull force. At a standard 0.5 MPa, it provides 15708N push and 15080N pull.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 450 mm nominal stroke by up to 75 mm, providing a usable travel window of 375 to 450 mm. This allows fine-tuning the end position at commissioning, but it is a travel limiter, not a lock, and cannot hold the load without live air pressure.
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