This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ200X225-50S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S
The AirTAC SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ200X225-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAIJ200X225-50S
- 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 SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S
The AirTAC SIJ200X225-50S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 200 mm bore and 225 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable extend range of 175-225 mm; the stop sets the end position but is not a load lock. The direct replacement is the SAIJ200X225-50S, retaining the same G3/4 port, M36x2 rod thread, 50 mm adjustable cushions, and 3204 kgf max force. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Operating speed is 30-500 mm/s. Note that a plain cylinder drifts on air loss; for load holding use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variants.
Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S Technical Specifications
| Model | Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ200X225-50S |
| Bore size | Ø200 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ200X225-50S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAIJ200X225-50S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S Is Used
Heavy Press Tonnage Adjustment
Trimming the extend stroke by up to 50 mm on-site allows operators to fine-tune heavy press end positions without machining spacers, accommodating material thickness variations.
Pallet Positioning Stops
Adjustable end positions enable precise control of large pallet placement in conveyor systems, allowing 175-225 mm extend ranges to be dialed in during commissioning.
Replacing the Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S with the SAIJ200X225-50S
To replace the discontinued SIJ200X225-50S, order the direct replacement SAIJ200X225-50S, which preserves the ISO 15552 mounting interface, 225 mm stroke, 50 mm adjust window, and G3/4 port. Choose the 50 mm adjust window if your application requires field tuning the extend stroke down to 175 mm; remember the stop screw sets end position and does not lock the load. Mounting options include Basic, FA, LB, and TC. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. For strokes of 300 mm or longer, verify side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ200X225-50S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ200 Double Rod Adjustable Cylinder SIJ200X225-50S FAQ
Yes, the AirTAC SIJ200X225-50S is discontinued. The direct replacement is the SAIJ200X225-50S. It shares the same ISO 15552 interface, 200 mm bore, 225 mm stroke, 50 mm adjust window, G3/4 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 50 mm adjust window, allowing the extend stroke to be shortened from 225 mm down to 175 mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ200X225-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ200X225-50S replacement — usually within 7-8 hours.