This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X250-40, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X250-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X250-40
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40
The AirTAC SIJ100X250-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 210-250 mm range (250 mm is the maximum). The direct replacement is the SAIJ100X250-40, matching the G1/2 port, 25 mm rod, and ISO 15552 mounting interface. The SAIJ successor also uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
This SKU has no -S magnet and cannot accept a reed switch. The stop screw sets the end position but is not a lock; use an external rod lock or SAIL/BSAI variant to hold loads on air loss.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X250-40 |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X250-40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X250-40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 Is Used
Press Fit Tuning
Allows operators to dial in the exact 210-250 mm extend position on-site for pressing bearings without machining hard stops.
Variable Length Diverter
Adjusts the extend stroke on a sorting lane to accommodate different package lengths on the fly.
Carton Sealing Stroke
Trims the extend end-position to match varying flap heights, ensuring consistent sealing pressure.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 with the SAIJ100X250-40
To replace the discontinued SIJ100X250-40, order the direct replacement SAIJ100X250-40, which preserves the 40 mm adjust window, 250 mm max stroke, and G1/2 port. Choose the 40 mm adjust window if your end-position needs field tuning between 210 and 250 mm. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S magnet, it cannot support position sensing. For strokes of 300 mm or longer, verify your side-load limits to prevent guide wear. The adjustable stop sets end position only; it does not lock the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X250-40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X250-40 FAQ
Yes, the SIJ100X250-40 is discontinued. The direct replacement is the SAIJ100X250-40, which matches the ISO 15552 interface, 100 mm bore, 250 mm stroke, 40 mm adjust window, and G1/2 port.
The external stop screw provides a 40 mm adjust window, allowing the extend stroke to be shortened from the 250 mm maximum down to 210 mm.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X250-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X250-40 replacement — usually within 7-8 hours.