This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X25-30S, 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 SIJ32X25-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 25mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X25-30S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ32X25-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder featuring a 32mm bore, 25mm nominal stroke, and a built-in piston magnet (-S) for legacy CS1-B/DS1-B switches. An external stop screw lets you trim the extend stroke by up to 30mm on-site, setting the precise end position independently of the internal 27mm adjustable air cushion. This model is DISCONTINUED; the direct replacement is the SAIJ32X25-30S, retaining the same interface, G1/8 port, and M10x1.25 rod thread.
The SAIJ family introduces an upgraded piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life, alongside SAIL and BSAI lock variants absent in the legacy SI line. The stop screw defines end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock for held loads.
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X25-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X25-30S |
| Bore size | Ø32 mm |
| Stroke | 25 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 SAIJ32X25-30S 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 SAIJ32X25-30S 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. |
| ×25 | 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).
Provides field-tunable clamping depth on machined parts, allowing operators to dial in the exact 0-25mm extend position without re-engineering the fixture.
Adjusts the extend stroke on-site to accommodate varying package sizes on a conveyor line, ensuring the diverter gate meets exact product dimensions.
To replace the discontinued SIJ32X25-30S, order the direct replacement SAIJ32X25-30S, which preserves the 32mm bore, 25mm nominal stroke, 30mm adjust window, G1/8 port, and ISO 15552 mounting dimensions. The 30mm adjust window allows you to tune the usable extend stroke down to zero on-site, which is often preferable to mounting a fixed SAI cylinder with an external mechanical stop. Standard FA, LB, and TC mountings reuse existing ISO 15552 interface holes. The -S suffix ensures a piston magnet is present for switch sensing. For any stroke over 300mm, carefully manage side loading to prevent premature seal wear.
Replacement checklist
Yes, the SIJ32X25-30S is discontinued. The direct replacement is the SAIJ32X25-30S. It shares the same ISO 15552 interface, 32mm bore, 25mm nominal stroke, 30mm adjust window, G1/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw allows you to trim the extend stroke by up to 30mm on-site, shortening the 25mm nominal stroke as needed. Note that this 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 SAIJ32X25-30S replacement — usually within 7-8 hours.