This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X175-100, 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 SIJ100X175-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X175-100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X175-100 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable 75-175 mm window from the 175 mm nominal maximum. The direct replacement is the SAIJ100X175-100, matching the G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushions.
The SAIJ successor retains the ISO 15552 mounting interface so existing FA, LB, and TC brackets reuse perfectly, and upgrades to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This SKU lacks a -S magnet and cannot take a switch. The stop screw sets end position only; it is not a load lock, so use an external rod lock or check valve for held loads.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X175-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X175-100 |
| Bore size | Ø100 mm |
| Stroke | 175 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 SAIJ100X175-100 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 SAIJ100X175-100 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. |
| ×175 | 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 75-175 mm extend position for pressing bearings without changing hard stops.
Requires on-site extend trimming up to 100 mm to reposition a diverting gate as package sizes change on the line.
Uses the external stop screw to set precise end positions for different pallet formats without swapping the cylinder.
To replace the discontinued SIJ100X175-100, specify SAIJ100X175-100 for an direct. Choose the 100 mm adjust window when you need maximum on-site extend trimming from 175 mm down to 75 mm. Select FA, LB, or TC mountings per ISO 15552 interchange. As this SKU has no -S magnet, it cannot accept a sensor; add -S for legacy CS1-B/DS1-B switch compatibility. For strokes of 300 mm or longer, verify side-load guidance to prevent rod bending.
Replacement checklist
Yes, the SIJ100X175-100 is discontinued. The direct replacement is the SAIJ100X175-100. It shares the same ISO 15552 interface, 100 mm bore, 175 mm stroke, 100 mm adjust window, G1/2 port, and mounting, but uses an upgraded two Y-shaped one-way piston seal.
The external stop screw allows trimming the extend stroke by up to 100 mm on-site, yielding a usable 75-175 mm 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 SAIJ100X175-100 replacement — usually within 7-8 hours.