Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X70-20S 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 SAIJ200X70-20S
The AirTAC SAIJ200X70-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 50 to 70 mm, allowing you to dial back the 70 mm nominal stroke by up to 20 mm during commissioning without adding external stops.
This unit includes a -S magnet for position sensing with CMSE reed and DMSE solid-state switches, which seat neatly into the sensor grooves on both sides of the extruded aluminum barrel. The carbon steel piston rod features an M36x2 thread, and the rear adjuster functions strictly as a travel stop to set end-position deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20S |
|---|---|
| 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 SAIJ200X70-20S
| 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 SAIJ200X70-20S Is Used
Heavy Press Fine-Tuning
Dial in the exact 50-70 mm pressing distance on heavy assembly lines during product changeovers without changing the cylinder.
Adjustable End Stops
Set precise end-position deceleration for massive 15708 N loads, tweaking the rear stopper to perfect the machine cycle.
Machine Setup Validation
Use the 20 mm adjustment range to safely validate tooling clearance and clamp positions before locking down the final travel.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20S the Right Cylinder?
The adjustable 20 mm window is highly beneficial for product changeovers on heavy machinery, letting operators fine-tune the end stop on the fly instead of physically swapping a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, this cylinder is insufficient; you would need an external rod lock or a SAIL pneumatic lock variant.
When configuring an ISO 15552 replacement, match the 200 mm bore, 70 mm stroke, 20 mm adjustment, PT tapered port threads, and the -S magnet option. Because the 70 mm stroke is relatively short for this massive bore, side-loading is less of a concern than with longer strokes, but the 40 mm rod diameter still handles high bending moments well. Mounting options are limited to 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 SAIJ200X70-20S FAQ
At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 70 mm nominal stroke by up to 20 mm, creating a usable travel window of 50 to 70 mm. It sets the end position but does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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