Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40
The AirTAC SAIJ200X250-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 210-250 mm usable travel window. It delivers 15708 N of push force at 0.5 MPa and 21991 N at 0.7 MPa, utilizing a robust 40 mm diameter piston rod with an M36x2 thread. The barrel is extruded aluminum with sensor grooves on both sides.
This unit uses a SUS420J2 stainless steel rod material for enhanced durability against environmental exposure. The rear adjustment screw functions strictly as a mechanical stop to trim the stroke during commissioning; it does not lock the load without live air pressure. The pneumatic cushioning at both ends decelerates the mass, but an external rod lock is required for true load-holding.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAIJ200AX250-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SAIJ200AX250-40 Is Used
Variable End-Stop Forming
Dial in the 210-250 mm travel window during press setup to accommodate different material thicknesses without swapping out the entire cylinder.
Heavy Product Changeover
Quickly adjust the retract end-position on a 15708 N thrust assembly line when switching between different large-scale product dimensions.
Precision Alignment Jigs
Leverage the M36x2 threaded 40 mm rod and fine-tune the stroke end-limit to perfectly seat heavy structural components during machining.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40 the Right Cylinder?
Select this 200 mm bore cylinder when an application requires massive thrust up to 3204 kgf at 1.0 MPa combined with exact end-position tuning without external stop blocks. If your force requirements are lower, stepping down to a 160 mm bore provides 10053 N at 0.5 MPa. The PT tapered G3/4 port handles high airflow to maintain speeds within the 30-500 mm/s range.
The 40 mm adjustment range allows precise variable end-stops for product changeovers. Because this is a 250 mm stroke, the 40 mm rod diameter carries significant side-load resistance, though an external guide is still recommended for heavy loads. This SAIJ model uses the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting set, omitting FB, CA, CB, and CR. It is dimensionally interchangeable per ISO 15552 without claiming direct brand equivalence.
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 SAIJ200AX250-40 FAQ
At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N. The operating speed range for this 200 mm bore is 30-500 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the 250 mm nominal stroke by up to 40 mm, creating a 210-250 mm usable travel window. It is a travel stop for fine-tuning, not a lock, and it cannot hold the load without live air pressure.
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