This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X400-100S, 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 SIJ100X400-100S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100S 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 SAIJ100X400-100S, 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 → SAIJ100X400-100S
- 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 SIJ100X400-100S
The AirTAC SIJ100X400-100S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and a 400 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 300-400 mm extension. The stop sets the end position; it is not a load lock. This SIJ model is discontinued; the direct replacement is the SAIJ100X400-100S.
The SAIJ successor retains the ISO 15552 mounting interface, bore, and force, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. A plain cylinder drifts on air loss; for held loads use an external rod lock or the SAIL/BSAI variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X400-100S |
| 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 SAIJ100X400-100S 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 SAIJ100X400-100S 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 SIJ100X400-100S
| 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 SIJ100X400-100S Is Used
Variable Press Stroke
Assembly presses needing field stroke tuning to accommodate varying part heights without swapping cylinders, using the 100 mm adjust window to set the exact extend endpoint.
Adjustable Diverter Arm
Package sorting lines where the diverter arm extension requires on-site calibration to handle different box widths, safely stopping the 400 mm stroke short when needed.
Calibrated Shelf Pusher
Automated storage systems pushing totes onto shelves at varying depths, utilizing the adjustable stop to limit the extend stroke precisely between 300 and 400 mm.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100S with the SAIJ100X400-100S
To replace the discontinued SIJ100X400-100S, order the direct replacement SAIJ100X400-100S, keeping the identical ISO 15552 interface, G1/2 port, and 400 mm stroke. Choose the 100 mm adjust window if you need to trim the extend stroke by up to 100 mm on-site; the stop screw sets end position but is not a lock. Mounting options include FA, LB, and TC brackets. The -S suffix ensures a piston magnet for position sensing. Because the 400 mm stroke is long, account for side-load and rod-bending forces by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X400-100S
- ✓ 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 SIJ100X400-100S FAQ
Yes, the SIJ100X400-100S is discontinued. The direct replacement is the SAIJ100X400-100S. It shares the same ISO 15552 interface, 100 mm bore, 400 mm stroke, 100 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The theoretical max is 801 kgf at 1.0 MPa. The external stop screw allows you to trim the extend stroke by up to 100 mm on-site, giving a usable 300-400 mm extension. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X400-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X400-100S replacement — usually within 7-8 hours.