Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-20S 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 SAIJ200AX250-20S
The AirTAC SAIJ200X250-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It delivers a robust 15708N push force at 0.5 MPa and features a 230-250mm usable travel window. This makes it ideal for heavy-duty applications requiring precise end-stop calibration without external hardware.
This model features a SUS420J2 stainless steel rod for enhanced durability against lateral stress and a PT tapered port thread for a tight, reliable pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for versatile position feedback.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-20S |
|---|---|
| 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 SAIJ200AX250-20S
| 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 SAIJ200AX250-20S Is Used
Heavy Press Tuning
Dial in the exact 230-250mm travel window on heavy stamping or pressing lines to accommodate material thickness variations without swapping out the cylinder.
Product Changeover Stops
Adjust the retract end-position on the fly during packaging line format changes, allowing quick adaptation to different package sizes.
Heavy Load Positioning
Move substantial 3204kgf payloads at 1.0 MPa while using the rear screw to precisely set the machine's home position during initial setup.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-20S the Right Cylinder?
Choose this 200mm bore cylinder when your application demands high thrust, such as 15708N push force at 0.5 MPa, combined with a 230-250mm adjustable travel window. If your setup requires less force, stepping down to a 160mm bore yields 10053N of push force, while keeping the same ISO 15552 mounting interface. The rear adjuster acts solely as a mechanical stop to trim the stroke; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
When replacing an ISO 15552 cylinder, match the 200mm bore, 250mm nominal stroke, 20mm adjustment range, G3/4 port, and the -S magnet requirement. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Although 250mm is below the 1500mm maximum standard stroke for this bore, the substantial 40mm rod diameter and M36x2 thread handle high side loads, yet external guiding remains recommended for heavy payloads.
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 SAIJ200AX250-20S FAQ
At a 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 3204kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 250mm nominal stroke by up to 20mm, creating a 230-250mm usable travel window. It only sets the end position and deceleration; it does not lock or hold the load without continuous air pressure.
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