This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X400-75S, 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.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X400-75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X400-75S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S
The AirTAC SIJ100X400-75S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore and 400mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 325-400mm window. The direct replacement is the SAIJ100X400-75S, matching the interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X400-75S |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-75S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X400-75S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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).
Where the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S Is Used
Variable Pitch Push Stations
Allows on-site extend stroke trimming from 400mm down to 325mm to accommodate different product lengths without swapping the entire cylinder.
Adjustable Diverters
Tunes the extend stop position precisely to the divert lane distance, ensuring accurate routing without needing mechanical spacers.
Format Change Forming Presses
Provides a 75mm adjustment window for packaging presses that need rapid depth changes for varying container sizes during production runs.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S with the SAIJ100X400-75S
To replace the discontinued SIJ100X400-75S, order the exact direct replacement SAIJ100X400-75S, keeping the 400mm nominal stroke, 75mm adjust window, and -S magnet. Choose the 75mm adjust window if your extend stroke needs field tuning between 325-400mm. Mounting reuses ISO 15552 Basic, FA, LB, or TC interfaces. Because the 400mm stroke exceeds 300mm, incorporate external guides to mitigate rod bending and side-load stress. The stop screw sets end position but does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X400-75S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-75S FAQ
Yes, the SIJ100X400-75S is discontinued. The direct replacement is the SAIJ100X400-75S, which matches the 100mm bore, 400mm stroke, 75mm adjust window, G1/2 port, and ISO 15552 mounting interface. The SAIJ features an upgraded piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 75mm on-site, giving a usable stroke range of 325-400mm. The stop sets position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X400-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X400-75S replacement — usually within 7-8 hours.