Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-20S 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
- 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 SAIJ200AX125-20S
The AirTAC SAIJ200X125-20-S is a double-acting ISO 15552 profile cylinder with a 200 mm bore and a rear stroke adjuster. It delivers 15708 N of push force at 0.5 MPa and features a 105-125 mm usable travel window, allowing you to dial back the nominal 125 mm stroke by up to 20 mm during commissioning without swapping the unit.
Equipped with a SUS420J2 stainless steel rod and a PT tapered port thread, this SKU includes a magnet for CMSE and DMSE sensors. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position; it is not a lock and will not hold the load without live air. For position holding without pressure, consider the SAIL or BSAI series.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-20S |
|---|---|
| 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 SAIJ200AX125-20S
| 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 SAIJ200AX125-20S Is Used
Heavy Press Fine-Tuning
Dial in the exact 105-125 mm travel window during machine commissioning to set precise pressing depths without changing the cylinder.
Product Changeover
Quickly adjust the retract end-stop on the fly when switching between product sizes on the line, saving setup time.
Variable End-Stop Automation
Use the rear mechanical stopper to set deceleration points for heavy 15708 N push operations without adding external hardware.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-20S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires precise variable end-stops or frequent product-size changeovers, avoiding the need to bolt on external stops or buy a fixed-stroke SAI cylinder. If you need less force, stepping down to a 160 mm bore yields 10053 N at 0.5 MPa, while the 200 mm bore here provides maximum thrust.
To match this ISO 15552 footprint, specify a 200 mm bore, 125 mm stroke, 20 mm adjustment, PT G3/4 ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the stroke is 125 mm, no external side-load guide is strictly required, though the robust 40 mm rod handles standard loads well.
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 SAIJ200AX125-20S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. The maximum thrust at 1.0 MPa is 3204 kgf.
The rear adjuster screw lets you mechanically shorten the 125 mm nominal stroke by up to 20 mm, creating a 105-125 mm usable travel window. This allows fine-tuning of the end position at commissioning, but the adjuster acts only as a stop and does not lock the load without live air.
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