This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X500-30, 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.

The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X500-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X500-30, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X500-30 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 30 mm on-site, yielding a usable 470-500 mm window from the 500 mm nominal maximum. The direct replacement is the SAIJ100X500-30, matching the G1/2 port, M20x1.5 rod thread, and 36 mm cushions.
The SAIJ successor retains the ISO 15552 mounting interface so existing brackets reuse perfectly, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position only—it is not a load lock.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X500-30 |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-30 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 SAIJ100X500-30 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. |
| ×500 | 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).
Dialing in the exact extend end position for a press fit operation where a 30 mm on-site trim window prevents costly hard-stops and machining errors.
Adjusting a diverter arm on a packaging line to accommodate varying product lengths without swapping the entire cylinder body.
Fine-tuning a pallet stop location on a heavy-duty conveyor, using the 470-500 mm usable stroke to handle slight pallet size variations.
To replace the discontinued SIJ100X500-30, order the direct replacement SAIJ100X500-30; it preserves the 500 mm stroke, 30 mm adjust window, and ISO 15552 dimensions. The 30 mm adjust window is ideal for fine-tuning the extend end position without machining. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S suffix, it has no magnet and cannot accept legacy CS1-B/DS1-B sensors. Finally, at 500 mm stroke, mind side-load and rod-bending forces—use external guides to prevent premature wear.
Replacement checklist
Yes, the SIJ100X500-30 is discontinued. The direct replacement is the SAIJ100X500-30. It shares the identical ISO 15552 interface, 100 mm bore, 500 mm stroke, 30 mm adjust window, G1/2 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal.
This 100 mm bore cylinder features a 30 mm adjust window (usable extend stroke 470-500 mm). The external stop screw sets the end position but is not a load lock; for held loads use an external rod lock or SAIL/BSAI variant.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X500-30 replacement — usually within 7-8 hours.