Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S
The AirTAC SAIJ200X135-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel to a precise 115-135 mm window during commissioning. As the largest standard bore in the SAIJ series, it generates a substantial 15708 N of push force and 15080 N of pull force at 0.5 MPa, making it ideal for heavy-duty positioning tasks. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for use with AirTAC CMSE reed and DMSE solid-state switches.
This specific configuration features a SUS420J2 stainless steel rod (code A) for enhanced resistance to moisture and corrosion compared to standard carbon steel. The rear adjustment screw acts purely as a mechanical stop to set the retract end-position and relies on the integrated air cushions for end-of-stroke deceleration; it does not lock or hold the load without continuous live air pressure. For applications requiring true fail-safe load holding, the SAIL or BSAI series would be required.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 135 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 SAIJ200AX135-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×135 | 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 SAIJ200AX135-20S Is Used
Heavy-Duty Press Tuning
Allows operators to fine-tune the 115-135 mm travel window on a large forming press, ensuring precise bottom-dead-center positioning without mechanical modifications.
Automated Assembly Changeover
Facilitates rapid product size changeovers on heavy assembly lines by simply rotating the rear adjuster screw to shift the end-stop position as needed.
Variable Stroke Ejection
Provides adjustable ejection length for large molded or stamped parts, allowing the 200 mm bore to deliver 15708 N of force across a customizable travel distance.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX135-20S the Right Cylinder?
Selecting the SAIJ200X135-20-S is optimal when your machinery requires massive thrust—such as heavy press or lift operations—combined with the flexibility to dial in the exact end-stop without swapping physical cylinders or adding external stopper blocks. If 15708 N of push force at 0.5 MPa is excessive for your application, stepping down to a 160 mm bore yields 10053 N, whereas this 200 mm bore is necessary for the most demanding high-force clamping or lifting cycles. The PT tapered porting ensures a tight, reliable pneumatic seal in high-vibration environments.
When integrating this cylinder, note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options available on some other series. Because this is a 135 mm stroke configuration, the 40 mm rod diameter and M36x2 thread provide excellent rigidity, but any application approaching the 1500 mm maximum standard stroke for this bore would necessitate an external guide to prevent excessive side-loading on the rod seals.
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 SAIJ200AX135-20S FAQ
The -20 adjustment code means the nominal 135 mm stroke can be mechanically shortened by up to 20 mm via a rear stopper screw, creating a usable travel window of 115 to 135 mm. This allows for precise end-position tuning at commissioning without replacing the cylinder.
At a standard operating pressure of 0.5 MPa, this 200 mm bore double-acting cylinder provides 15708 N of push force and 15080 N of pull force. It can deliver up to 3204 kgf at its maximum rated pressure of 1.0 MPa.
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