Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S
The AirTAC SAIJ200X70-40-S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. Equipped with a rear adjusting screw, it allows you to dial back the 70 mm nominal stroke by up to 40 mm, creating a highly versatile 30-70 mm usable travel window for precise machine setup. It delivers massive thrust, pushing with 15708 N and pulling with 15080 N at 0.5 MPa, while operating at a controlled 30-500 mm/s speed range.
This specific SKU is configured with an SUS420J2 stainless steel rod (code A) for enhanced durability against lateral stress, and includes a magnetic piston (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state sensors. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting, and the PT tapered port threads ensure a robust, leak-free pneumatic connection.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAIJ200AX70-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SAIJ200AX70-40S Is Used
Heavy Press Tuning
Dial in the exact 30-70 mm travel window during heavy press commissioning to accommodate varying material thicknesses without external stopper blocks.
Product Changeover
Rapidly adjust the retract end-position on automated assembly lines when switching between different product sizes, saving setup time.
High-Force Positioning
Leverage the 15708 N push force at 0.5 MPa to move heavy pallets or tooling bases into a precise end-stop location.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-40S the Right Cylinder?
Select this 200 mm bore cylinder when your application demands extreme force—stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N, whereas this model provides a maximum of 15708 N. The adjustable stroke is ideal for product changeovers on the line, letting you fine-tune the end stop without swapping hardware or adding external stops. Keep in mind the rear adjuster acts solely as a travel stop to set deceleration; it does not hold the load without live air. For secure load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
When replacing an ISO 15552 cylinder, match these exact parameters: 200 mm bore, 70 mm stroke, 40 mm adjustment range, PT port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR brackets found on other variants. Because the stroke is under 300 mm, side-load risks are minimized, but the substantial 40 mm rod and M36x2 thread still provide excellent rigidity for heavy loads.
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 SAIJ200AX70-40S FAQ
The rear adjuster screw allows you to shorten the 70 mm nominal stroke by up to 40 mm. This provides a usable travel window of 30-70 mm, which can be fine-tuned during commissioning or product changeovers without replacing the cylinder.
At 0.5 MPa operating pressure, it generates a push force of 15708 N and a pull force of 15080 N. At its maximum 1.0 MPa operating pressure, it can deliver up to 3204 kgf of push force.
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