This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X150-20S, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X150-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X150-20S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X150-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 130-150 mm range from the 150 mm nominal maximum. The stop sets the end position but is not a load lock; loads drift on air loss.
The direct replacement is the SAIJ100X150-20S, retaining the same interface, force, and mounting. The SAIJ family introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X150-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X150-20S |
| Bore size | Ø100 mm |
| Stroke | 150 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 SAIJ100X150-20S 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X150-20S 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). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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).
Allows operators to dial in the exact 130-150 mm extend position for pressing bearings without re-engineering fixed stops.
Fine-tunes the extend stroke on-site to accommodate varying package sizes on a sorting line.
Provides adjustable end-position clamping for different carton depths, ensuring precise sealing pressure.
To replace the discontinued SIJ100X150-20S, order the direct replacement SAIJ100X150-20S, ensuring you select current AirTAC switches to pair with the built-in magnet. The 20 mm adjust window is ideal for fine-tuning the extend endpoint without machining. Mounting options include Basic, FA, LB, and TC brackets. Because the nominal stroke is 150 mm, side-load alignment is manageable, but for strokes >=300 mm ensure proper guide rail support to prevent rod binding.
Replacement checklist
Yes, the SIJ100X150-20S is discontinued. The direct replacement is the SAIJ100X150-20S, which shares the same ISO 15552 interface, 100 mm bore, 150 mm stroke, 20 mm adjust window, G1/2 port, and mounting options. The SAIJ upgrade also features an improved two Y-shaped one-way piston seal for longer life.
The external stop screw offers a 20 mm adjustment window, allowing the extend stroke to be shortened from the 150 mm maximum down to 130 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 SAIJ100X150-20S replacement — usually within 7-8 hours.