Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-20S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X400-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 400mm 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
- Stroke400 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 SAIJ200X400-20S
The AirTAC SAIJ200X400-20-S is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stopper that allows you to fine-tune the end position. With a 400mm nominal stroke and a 20mm adjustment range, it provides a usable travel window of 380-400mm.
It features a robust 40mm carbon steel rod and a PT tapered G3/4 port for high flow. The extruded aluminum barrel includes sensor grooves on both sides, and because this is an -S variant, it carries a magnet ready for AirTAC CMSE reed and DMSE solid-state switches. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, so live air pressure is required to hold the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAIJ200X400-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SAIJ200X400-20S Is Used
Heavy Press Tuning
Fine-tune the 380-400mm travel window during commissioning to set precise pressing forces without machining external stoppers.
Product Changeover
Quickly adjust the end-stop position on automated lines when switching product sizes, saving downtime on the factory floor.
Large Assembly Jigs
Dial in the exact retraction point on heavy assembly jigs where a 20mm variance determines proper component alignment.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-20S the Right Cylinder?
The 20mm adjustable stroke is ideal for dialing in exact end positions during machine setup or product changeover without swapping the cylinder or adding external stops. For a fixed travel without this commissioning flexibility, the standard SAI cylinder is the alternative.
When replacing an ISO 15552 cylinder, match the 200mm bore, 400mm stroke, 20mm adjustment, PT G3/4 port, and -S magnet. The supported mounting set is Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the stroke is 400mm, the long unsupported travel requires an external guide to prevent excessive side-load wear on the 40mm rod. If you need true load-holding without live air, use an external rod lock or explore the SAIL or BSAI series.
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 SAIJ200X400-20S FAQ
The rear adjuster acts as an external stopper that lets you shorten the 400mm nominal stroke by up to 20mm, giving a usable travel window of 380-400mm. It sets the end position but does not lock the load without live air pressure.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC SAI Cylinders
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