Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-40S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X70-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke70 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 SAIJ200X70-40S
The AirTAC SAIJ200X70-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5 MPa. The integrated -40 adjuster screw allows you to trim the nominal 70mm stroke back by up to 40mm, creating a highly specific 30-70mm usable travel window. This eliminates the need to swap cylinders when fine-tuning end positions during machine commissioning.
This bore 200 unit features a robust 40mm carbon steel rod and a G3/4 PT tapered port to handle high airflow demands. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes the -S magnet, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-40S |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-40S
| 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 SAIJ200X70-40S Is Used
Heavy Press Tuning
Dial in the exact 30-70mm travel window during press setup to accommodate different material thicknesses without changing the actuator.
Position Calibration
Fine-tune the end-of-stroke position at commissioning using the rear screw, relying on CMSE/DMSE sensors to confirm the adjusted stopping point.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-40S the Right Cylinder?
Select this 200mm bore actuator when an application requires extreme push force, stepping up significantly from a 160mm bore that yields 10053N at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when a setup demands variable end-stops or frequent product-size changeovers, allowing operators to dial in the 30-70mm travel window without adding external mechanical stops. For an exact ISO 15552 replacement match, verify the 70mm stroke, 40mm adjustment, G3/4 PT port, and the required mounting style from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 70mm stroke is relatively short for this large bore, side-load stress is naturally minimized, though the heavy 40mm rod still provides excellent rigidity. Remember that the rear adjuster functions strictly as a travel stop, not a lock; if the machine requires load-holding without live air pressure, you must integrate an external rod lock or pilot-operated check valve, or switch to an AirTAC SAIL or BSAI cylinder.
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 SAIJ200X70-40S FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjuster screw allows you to shorten the nominal 70mm stroke by up to 40mm, creating a usable travel window of 30-70mm. This stopper only sets the end position and does not lock the load.
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