Airtac SAIJ200 Adjustable Cylinder SAIJ200X450-75S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X450-75S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 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 SAIJ200 Adjustable Cylinder SAIJ200X450-75S
The AirTAC SAIJ200X450-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. An integrated magnet allows position sensing via AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting.
This specific SKU provides a 450 mm nominal stroke that can be dialed back by up to 75 mm, creating a precise 375-450 mm usable travel window. The external rear adjusting screw lets you fine-tune the retract end position during commissioning or product changeovers without adding external stops or swapping the cylinder. The adjuster acts purely as a travel stop to set the end position, so it will not hold the load dynamically without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X450-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X450-75S |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X450-75S
| 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 SAIJ200X450-75S Is Used
Heavy Press Tonnage Setup
Dial in the exact 375-450 mm end-stop during heavy press commissioning to accommodate varying material thicknesses without replacing the massive cylinder.
Large Product Changeover
Adjust the retract position on a conveyor sorting line by up to 75 mm to handle different large pallet sizes quickly and efficiently.
Heavy Assembly Positioning
Fine-tune the stroke end on an automated assembly rig to perfectly seat large components, using the rear stopper instead of external mechanical stops.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X450-75S the Right Cylinder?
Selecting this 200 mm bore cylinder is ideal when your application requires extreme force alongside variable end-stop positioning. Because the 450 mm stroke is substantial and the piston rod is 40 mm in diameter, you must account for side loads; long unsupported strokes require an external guide to prevent rod bending and premature seal wear. For load-holding without continuous air pressure, a plain SAIJ is insufficient—consider the SAIL air-released lock, BSAI clamp-lock, or an external rod lock.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 450 mm stroke, and 75 mm adjustment range. This unit uses PT tapered ports, a 40 mm carbon steel rod with an M36x2 thread, and includes a magnet (-S). It supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR mounts.
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 SAIJ200X450-75S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm from the 450 mm nominal length, providing a usable travel window of 375-450 mm. It functions as a mechanical stop to set the end position and does not lock or hold the load without live air pressure.
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