Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30
The AirTAC SAIJ200X125-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position during commissioning. With a nominal 125 mm stroke and a 30 mm adjustment screw, this unit provides a usable travel window of 95-125 mm, letting you dial in the exact retract distance without adding external stops. It delivers a robust 15080 N pull force at 0.5 MPa, making it suited for heavy-duty positioning.
This model features a SUS420J2 stainless steel rod for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches if needed. The rear adjuster acts purely as a travel stop to set deceleration, meaning it will not hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 125 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 SAIJ200AX125-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×125 | 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 SAIJ200AX125-30 Is Used
Heavy Press Positioning
Dial in the exact 95-125 mm retract distance during machine setup to accommodate varying material thicknesses without swapping out cylinders.
Product Line Changeover
Quickly adjust the end-stop for new product sizes on a conveyor line, using the rear screw to fine-tune the travel window on the fly.
High-Force End Tuning
Leverage the 15080 N pull force for heavy assembly operations while precisely setting the deceleration point at the end of travel.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-30 the Right Cylinder?
Choose this 200 mm bore cylinder when an application requires massive force—up to 15708 N push at 0.5 MPa—and precise variable end-stops. If you need slightly less force, stepping down to a 160 mm bore yields 9425 N pull at 0.5 MPa. The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, providing a fixed SAI alternative with built-in flexibility.
Because the stroke is 125 mm, no external side-load guide is strictly required, though the 40 mm rod and M36x2 thread handle substantial loads. If your process demands true load-holding without continuous air pressure, this cylinder will not suffice; consider an AirTAC SAIL pneumatic lock, BSAI clamp-lock, or an external rod lock. For ISO 15552 replacement matching, specify: 200 mm bore, 125 mm stroke, 30 mm adjustment, PT ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet.
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 SAIJ200AX125-30 FAQ
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. It can reach a maximum push force of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm from the nominal 125 mm, creating a usable travel window of 95-125 mm. It functions as a mechanical stop to fine-tune the end position and does not lock the load without live air pressure.
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