This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X100-30FA, 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.

The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X100-30FA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X100-30FA, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X100-30FA is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and a 100 mm nominal stroke. An external stop screw allows you to trim the extend stroke by up to 30 mm on-site, yielding a usable extend range of 70-100 mm. The stop sets the end position but is not a load lock; a plain cylinder drifts on air loss. This SKU has no -S magnet and cannot take a switch. It features a Ø25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G1/2 port, and 30-800 mm/s speed.
The direct replacement is the SAIJ100X100-30FA, matching the ISO 15552 interface, force, and FA mount. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. SAIJ beats a fixed SAI plus external stop by cleanly integrating the adjust screw.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-30FA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X100-30FA |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAIJ100X100-30FA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X100-30FA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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).
Needs field stroke tuning to dial in the exact 70-100 mm extend position for pressing bearings without changing hard stops.
Requires trimming the extend stroke by up to 30 mm on-site to accommodate different package sizes on the fly.
Needs adjustable end-position to fine-tune the folding stroke for various corrugated board formats.
To replace the discontinued SIJ100X100-30FA, order the exact direct replacement SAIJ100X100-30FA (same G1/2 port, 100 mm stroke, 30 mm adjust window, FA mount). Choose the 30 mm adjust window if you need to trim the extend stroke by up to 30 mm on-site; the nominal 100 mm stroke remains the maximum. Reuse your ISO 15552 FA foot mounting interface. Because this SKU lacks the -S magnet, it cannot accept a sensor; for position feedback you must select an SAIJ-S model. For strokes >=300 mm, verify side-load tolerance to prevent rod binding. The external stop sets end position only; for load holding on air loss, use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SIJ100X100-30FA is discontinued. The direct replacement is the SAIJ100X100-30FA. It matches the ISO 15552 interface, 100 mm bore, 100 mm stroke, 30 mm adjust window, G1/2 port, and FA mounting. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life and lower start-up pressure.
The external stop screw window is 30 mm, allowing you to shorten the extend stroke from the 100 mm maximum down to 70 mm. The stop sets end position only; it is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X100-30FA replacement — usually within 7-8 hours.