Airtac SAIJ200 Adjustable Cylinder SAIJ200BX425-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX425-50 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- 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 SAIJ200BX425-50
The AirTAC SAIJ200X425-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5MPa. It features a durable SUS304 stainless steel piston rod and a PT tapered port. Because this 425mm stroke unit carries a 50mm adjustment code, operators can dial the effective travel back to anywhere within a 375-425mm window. This built-in mechanical stopper allows precise end-position tuning during commissioning without adding external stops.
The adjuster acts purely as a travel stop, meaning it cannot hold the load without live air pressure. For load-holding requirements, consider the related SAIL or BSAI series. This 200mm bore model runs at a slower 30-500mm/s speed range and uses a robust M36x2 rod thread. It also retains standard sensor grooves on both sides of the extruded aluminum barrel, compatible with CMSE and DMSE switches if a magnet is added later.
Airtac SAIJ200 Adjustable Cylinder SAIJ200BX425-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX425-50 |
|---|---|
| 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 | 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 SAIJ200BX425-50
| 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 SAIJ200BX425-50 Is Used
Heavy Machinery Changeover
Dial in the 375-425mm travel window during heavy equipment product line changeovers to set new retract positions without swapping cylinders.
Press End-Stop Tuning
Use the rear adjuster to fine-tune the final end-position on large pressing tasks, guaranteeing precise contact without adding bulky external mechanical stops.
Long-Stroke Positioning
Leverage the 425mm stroke for long-travel automation, adjusting the stopper to synchronize multi-stage movements across large-scale assembly lines.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200BX425-50 the Right Cylinder?
Select this 200mm bore cylinder when an application demands extreme force, offering 15708N push and 15080N pull at 0.5MPa. If a smaller footprint is acceptable, stepping down to a 160mm bore provides 10053N push force. Choose this SAIJ adjustable-stroke variant over a fixed SAI model when a machine handles product-size changeovers, allowing the retract end-position to be fine-tuned by up to 50mm on the fly.
Because this unit features a 425mm stroke, the long unsupported piston rod requires an external guide to prevent excessive side-loading and premature wear. Ensure your ISO 15552 replacement matches the 200mm bore, 425mm stroke, 50mm adjustment, PT port, SUS304 rod, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ200BX425-50 FAQ
At 0.5MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At its maximum 1.0MPa pressure, it can deliver up to 3204kgf.
The rear adjuster screw allows you to shorten the effective travel from the 425mm nominal stroke down to a minimum of 375mm. This creates a 50mm adjustable window for fine-tuning the end position at commissioning, but it functions only as a stop and does not lock the load without continuous air pressure.
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