This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X100-20S, 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X100-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 100mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X100-20S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X100-20S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. A 100mm nominal extend can be trimmed by up to 20mm on-site via an external stop screw, yielding an 80-100mm usable window. This SIJ model is discontinued; the direct replacement is the SAIJ32X100-20S, matching the bore, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The stop screw sets end position but is not a lock; loads drift on air loss. For held loads, use an external rod lock or the SAIL/BSAI variants.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X100-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X100-20S |
| Bore size | Ø32 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ32X100-20S 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAIJ32X100-20S 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). |
|---|---|
| 32 | 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).
Trimming the extend stroke by up to 20mm on-site allows precise calibration of diverter gates without machining custom spacers.
Adjustable end-position stops accommodate varying package heights on a packaging line, setting the exact 80-100mm jaw closure.
To replace the discontinued SIJ32X100-20S, order SAIJ32X100-20S for an exact ISO 15552 direct fit. Choose the 20mm adjust window if your extend stroke needs on-site tuning between 80-100mm; for fixed 100mm travel, a standard SAI cylinder suffices. Mounting options include FA, LB, and TC brackets. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches (SAIJ uses current switches). For strokes of 300mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SIJ32X100-20S is discontinued. The direct replacement is the SAIJ32X100-20S. It matches the 32mm bore, 100mm stroke, 20mm adjust window, G1/8 port, and ISO 15552 mounting interface.
The external stop screw shortens the extend stroke by up to 20mm, giving an 80-100mm usable window. The stop sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X100-20S replacement — usually within 7-8 hours.