This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X200-30, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X200-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X200-30
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30
The AirTAC SIJ50X200-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 50 mm bore and 200 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 170-200 mm extension. This SKU has no -S magnet and cannot carry a reed switch.
As SIJ is end-of-life, the direct replacement is the SAIJ50X200-30, preserving the ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X200-30 |
| Bore size | Ø50 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ50X200-30 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAIJ50X200-30 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 30 mm on-site allows precise alignment of diverter gates without machining custom spacers.
Variable Depth Carton Sealing
Adjust the 200 mm extend endpoint down to 170 mm to accommodate fluctuating carton heights on a packaging line.
Transfer Pusher Tuning
Field-tune the pusher end position to sync with a moving conveyor bed, ensuring product handoff without repositioning the cylinder mount.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 with the SAIJ50X200-30
To replace the discontinued SIJ50X200-30, order the direct replacement SAIJ50X200-30, which matches the 50 mm bore, 200 mm stroke, 30 mm adjust window, and G1/4 port. Choose the 30 mm adjust window if your extend stroke needs on-site tuning between 170 and 200 mm. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B or DS1-B sensors; add external sensing if required. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X200-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X200-30 FAQ
Yes, the SIJ50X200-30 is discontinued. The direct replacement is the SAIJ50X200-30. It shares the same ISO 15552 interface, 50 mm bore, 200 mm stroke, 30 mm adjust window, and G1/4 port, but features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw offers a 30 mm adjust window, shortening the extend stroke from the 200 mm maximum down to 170 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X200-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X200-30 replacement — usually within 7-8 hours.