Airtac SAIJ200 Adjustable Cylinder SAIJ200BX250-75
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX250-75 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
- 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 SAIJ200BX250-75
The AirTAC SAIJ200X250-75 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty applications. It features a rear-mounted adjusting screw that allows you to fine-tune the effective stroke, providing a usable travel window of 175-250 mm without swapping hardware. Equipped with a robust 40 mm SUS304 stainless steel rod and a PT G3/4 port, it generates 15708 N of push force at 0.5 MPa.
This adjustable-stroke design is ideal for product-size changeovers on a line, letting you dial in the exact retract end-position at commissioning. The extruded aluminum barrel includes sensor grooves on both sides, though this non-magnet variant requires adding a magnet (-S) to utilize CMSE or DMSE switches. The rear stopper and variable air cushions manage deceleration, but neither will hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200BX250-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX250-75 |
|---|---|
| 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 SAIJ200BX250-75
| 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 SAIJ200BX250-75 Is Used
Heavy Press Tuning
Dial in the exact 175-250 mm retract position during heavy press commissioning to accommodate different material thicknesses without adding external stops.
Product Size Changeover
Rapidly adjust the stroke window on a packaging conveyor line when switching between large product dimensions, ensuring precise end-of-stroke positioning.
Assembly Station Setup
Fine-tune the end stop on heavy assembly fixtures to achieve perfect alignment, leveraging the 15708 N push force for demanding industrial tasks.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200BX250-75 the Right Cylinder?
Selecting this 200 mm bore cylinder makes sense when your application requires massive thrust, delivering 15708 N push and 15080 N pull at 0.5 MPa. If your force requirements are lower, stepping down to a 160 mm bore yields 10053 N of push force, saving space and air consumption. Choose the SAIJ adjustable version over a fixed SAI when you need on-the-fly end-position tuning for varying product sizes. For load-holding without continuous air pressure, this cylinder is insufficient; consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 250 mm stroke, 75 mm adjustment range, PT G3/4 port, and your required mounting style. SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Although the 250 mm stroke is under the 300 mm side-load threshold, the heavy 40 mm rod thread handles substantial lateral stress; for longer unsupported strokes, always use an external guide.
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 SAIJ200BX250-75 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it delivers a maximum push force of 3204 kgf.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 250 mm nominal stroke by up to 75 mm. This creates a usable travel window of 175-250 mm, enabling fine end-position tuning at commissioning without replacing the cylinder.
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