Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75
The AirTAC SAIJ200X300-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 300 mm travel by up to 75 mm, creating a precise 225-300 mm usable window. Built with a SUS420J2 stainless steel rod, it handles massive loads, delivering 28274 N of push force at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position detection.
This 200 mm bore unit uses a G3/4 PT tapered port and relies on 50 mm air cushions at both ends to decelerate heavy moving masses. The rear adjuster acts purely as a travel stop for commissioning and product changeovers, meaning it does not hold the load without live air pressure. For load-holding requirements, an external rod lock or the AirTAC SAIL/BSAI series is required.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAIJ200AX300-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SAIJ200AX300-75 Is Used
Heavy Press Tonnage
Delivers up to 28274 N of push force at 0.9 MPa for high-tonnage stamping, forming, and heavy industrial press operations.
Product Size Changeover
Dial in the exact 225 to 300 mm end-position during line changeovers without physically swapping the cylinder or adding external stopper blocks.
Large Assembly Platforms
Ideal for heavy-duty automated assembly lines where the 50 mm air cushions safely decelerate massive payloads at the travel ends.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-75 the Right Cylinder?
Choose this 200 mm bore when your application requires extreme thrust, such as 21991 N at 0.7 MPa, and you need the flexibility to tune the end position without swapping cylinders or adding external stops. If you need less force, stepping down to a 160 mm bore yields 14074 N at 0.7 MPa, while keeping the same 30-500 mm/s speed range. The SAIJ is selected over a fixed-stroke SAI when a machine handles multiple product sizes and requires variable end-stops during changeover.
This cylinder is dimensionally interchangeable per ISO 15552 mounting interfaces. Configuration details include a 300 mm stroke, 75 mm adjustment range, PT G3/4 port, and mounting options limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 300 mm stroke is substantial and the 40 mm rod is heavy, always use an external guide to prevent excessive side-loading on the rod and bearing.
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 SAIJ200AX300-75 FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides 21991 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw lets you shorten the 300 mm nominal stroke by up to 75 mm, providing a usable travel window of 225 to 300 mm. This stopper only sets the end position; it does not lock or hold the load without continuous air pressure.
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