Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S
The AirTAC SAIJ200X140-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a robust 15708N thrust at 0.5 MPa and uses a SUS420J2 stainless steel rod. The built-in -40 mm adjustment mechanism allows you to fine-tune the effective travel down from the 140 mm nominal stroke, yielding a usable window of 100-140 mm. This eliminates the need to swap the cylinder or add external stops during machine commissioning.
It features a PT tapered port and is equipped with a magnet (-S) for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts purely as a travel stop and works with the variable air cushion to decelerate the load. It does not hold the load without live air; for true load-holding without pressure, use a SAIL or BSAI cylinder.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 140 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 SAIJ200AX140-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×140 | 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 SAIJ200AX140-40S Is Used
Heavy Press Tuning
Dial in the exact 100-140 mm travel window during setup to accommodate varying material thicknesses without changing cylinders.
Product Changeover
Quickly adjust the rear stopper to modify end positions when switching the production line to a new product size.
Large Assembly Stops
Leverage the 15708N thrust to move heavy assemblies while using the rear screw to fine-tune the final resting position.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX140-40S the Right Cylinder?
Select this 200 mm bore cylinder when your application requires massive thrust (15708N push at 0.5 MPa) but demands variable end-position tuning between 100 and 140 mm. If you need less force, stepping down to a 160 mm bore yields 10053N at 0.5 MPa. Choose the adjustable SAIJ over a fixed-stroke SAI when you need on-the-fly end-stop changes for product size variations. For replacement, match the 200x140 stroke, 40 mm adjust, PT ports, SUS420J2 (A) rod, and -S magnet.
Because the stroke is 140 mm, side-load risks are moderate, but the heavy 40 mm rod and M36x2 thread handle high axial loads. For long unsupported strokes over 300 mm, an external guide is mandatory. Note the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ200AX140-40S FAQ
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder generates a push force of 15708N and a pull force of 15080N. At 0.9 MPa, the push force increases to 28274N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 140 mm nominal stroke by up to 40 mm. This creates a usable travel window of 100-140 mm, enabling fine-tuning at commissioning without external stops.
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