Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-100
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-100 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 SAIJ200AX125-100
The AirTAC SAIJ200X125-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 125 mm travel back by up to 100 mm, yielding a usable window of 25-125 mm for exact positioning. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, peaking at 3204 kgf at 1.0 MPa. The extruded aluminum barrel integrates dual sensor grooves, and the piston rod utilizes SUS420J2 stainless steel for high corrosion resistance.
Equipped with PT tapered ports sized at G3/4 and variable air cushions at both ends, this heavy-duty actuator operates at 30-500 mm/s. The rear stopper mechanism allows fine end-position tuning during commissioning without adding external stops, but it acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-100 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-100 |
|---|---|
| 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 SAIJ200AX125-100
| 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 SAIJ200AX125-100 Is Used
Heavy Press Tuning
Dial in the exact 25-125 mm travel window during heavy press commissioning to accommodate material thickness variations without swapping actuators.
Product Changeover
Rapidly adjust the end-stop position on automated assembly lines when switching between different product sizes or stacking heights.
Clamping Force Setup
Fine-tune the retraction end-position to optimize clamping force and cycle timing on large manufacturing fixtures.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-100 the Right Cylinder?
Choose this 200 mm bore when an application requires over 15000 N of force at 0.5 MPa, as stepping down to a 160 mm bore drops the push force to 10053 N. An adjustable stroke is selected over a fixed SAI cylinder when machine setups demand variable end-stops or product-size changeovers require on-the-fly travel trimming. To match this ISO 15552 footprint, specify a 200 mm bore, 125 mm stroke, 100 mm adjustment, PT G3/4 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts.
Because the 125 mm stroke is below the 300 mm threshold, external side-load guides are less critical than on longer strokes, though the robust 40 mm rod and M36x2 thread handle substantial loads. For applications needing true load-holding without live air, consider an AirTAC SAIL or BSAI locking cylinder instead of relying on the rear adjuster.
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 SAIJ200AX125-100 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 up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that can shorten the 125 mm nominal stroke by up to 100 mm, providing a usable travel window of 25 to 125 mm. It requires live air to function and is not a locking brake.
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