Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40
The AirTAC SAIJ200X45-40 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, delivering 15708N of push force at 0.5 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and a robust 40mm rod. This model uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance, alongside PT tapered port threads.
Equipped with a rear stroke adjuster, this unit allows you to fine-tune the end position without swapping components. The 45mm nominal stroke combined with the 40mm adjustment code creates a highly versatile 5-45mm usable travel window. The rear screw acts purely as a travel stop for commissioning precision, not as a lock, meaning live air is required to maintain the load position.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 45 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 SAIJ200AX45-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×45 | 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 SAIJ200AX45-40 Is Used
Heavy Press Tuning
Dial in the exact 5-45mm clamping depth on heavy presses during product changeovers without external stopper hardware.
Variable End Stops
Adjust the retract position on the fly for automated lines handling varying material thicknesses or sizes.
Commissioning Precision
Fine-tune the end-of-stroke position during initial machine setup to perfect timing and prevent mechanical crashes.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX45-40 the Right Cylinder?
Selecting this 200mm bore cylinder is appropriate when your application demands substantial thrust, such as 15708N push or 15080N pull at 0.5 MPa. If your force requirements are lower, stepping down to a 160mm bore yields 10053N of push force, making the SAIJ160 variant more efficient. The adjustable 5-45mm travel window is chosen over a fixed-stroke SAI cylinder when a machine setup requires variable end-stops to accommodate product changeovers.
For an exact ISO 15552 replacement, match the 200mm bore, 45mm stroke, 40mm adjustment, PT port threads, and the SUS420J2 rod material. Since the stroke is under 300mm, external side-load guides are less critical than on longer strokes, but the heavy 40mm rod still handles significant lateral stress. Note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For load-holding without live air pressure, consider 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 SAIJ200 Adjustable Cylinder SAIJ200AX45-40 FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it achieves a top push force of 3204 kgf.
The rear adjuster screw lets you trim the effective travel back by up to 40mm from the 45mm nominal stroke, creating a 5-45mm usable travel window. The adjuster functions as a mechanical stop for position tuning and does not lock the load without live air.
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