Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X425-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 425mm 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
- Stroke425 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 SAIJ200X425-50S
The AirTAC SAIJ200X425-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering robust performance for heavy-duty applications. It features a carbon steel piston rod and a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state sensors. By utilizing the 50mm adjustment mechanism, operators can dial in the effective travel to anywhere within a 375 to 425mm window, providing exact end-position tuning without adding external stops.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It is important to note that the rear adjuster acts strictly as a travel stop to set deceleration, not as a lock; it will not hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 425 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 SAIJ200X425-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×425 | 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 SAIJ200X425-50S Is Used
Heavy Press Tuning
Dial in the exact 375-425mm travel window during heavy press commissioning to accommodate varying material thicknesses without swapping cylinders.
Variable End-Stop Setup
Use the rear stopper to fine-tune the retraction end position on large packaging equipment, allowing rapid product size changeovers on the line.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50S the Right Cylinder?
When sizing this actuator, stepping down to a 160mm bore yields a 9425N pull force at 0.5 MPa, which may suffice for lighter loads, while the 200mm bore provides a maximum 3204 kgf at 1.0 MPa for demanding machinery. The adjustable stroke is chosen over a fixed-stroke SAI model when a process requires variable end-stops or fine-tuning during machine commissioning and product changeover. Because the 425mm stroke is relatively long, the 40mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston. For true load-holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the adjuster. To replace an ISO 15552 cylinder, match the 200mm bore, 425mm stroke, 50mm adjustment, PT tapered port, and Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting set.
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 SAIJ200X425-50S FAQ
It can reach a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective travel by up to 50mm, creating a usable stroke window of 375 to 425mm. This stopper only sets the travel end and does not lock or hold 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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