This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X400-30, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X400-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X400-30
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30
The AirTAC SIJ100X400-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and 400 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 370-400 mm extension. The direct replacement is the SAIJ100X400-30, retaining the same interface, force, and adjustability.
The SAIJ successor introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a magnet (-S) and cannot accept a sensor. The stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X400-30 |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-30 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 SAIJ100X400-30 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 SIJ100X400-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SIJ100X400-30 Is Used
Press Fit Tuning
Final insertion depth varies by material tolerance; trim the 400 mm extend stroke by up to 30 mm on-site to set precise press fit bottoming without remounting.
Variable Length Diverter
Adjust the extend stop between 370 mm and 400 mm to deflect differing package widths on a conveyor line, ensuring accurate routing.
Adjustable End Stop
Set a repeatable 370-400 mm hard stop for pallet positioning, tuning the exact contact point in the field to match varying pallet dimensions.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30 with the SAIJ100X400-30
To replace the discontinued SIJ100X400-30, specify the direct replacement SAIJ100X400-30, which matches the 100 mm bore, 400 mm stroke, 30 mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 30 mm adjust window if your end-position tuning falls within 370-400 mm. Mounting attachments (FA, LB, TC) reuse directly. Because this is a non-magnetized SKU, it cannot accept legacy CS1-B/DS1-B sensors. For the 400 mm stroke, support side loads with external guides to prevent rod bending. The stop screw only sets end position; it does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X400-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30 FAQ
Yes, the SIJ100X400-30 is discontinued. The direct replacement is the SAIJ100X400-30. It shares the identical ISO 15552 interface, 100 mm bore, 400 mm stroke, 30 mm adjust window, G1/2 port, and mounting, while adding an upgraded piston seal.
The external stop screw provides a 30 mm adjust window, allowing you to trim the 400 mm extend stroke down to 370 mm. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X400-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X400-30 replacement — usually within 7-8 hours.