This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X400-30S, 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.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30S 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 SAIJ100X400-30S, 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 → SAIJ100X400-30S
- 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 SIJ100X400-30S
The AirTAC SIJ100X400-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. The direct replacement is the SAIJ100X400-30S, matching the 100mm bore, 400mm nominal stroke, G1/2 port, and mounting interface. An external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable extend range of 370-400mm. This stop purely sets the end position; it is not a load lock.
The SAIJ successor features an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. For load holding on air loss, note this cylinder drifts; use an external rod lock or the SAIL/BSAI variants.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X400-30S |
| 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 SAIJ100X400-30S 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 SAIJ100X400-30S 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 SIJ100X400-30S
| 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 SIJ100X400-30S Is Used
Press Fit Tuning
Final insertion depth of bearings requires field stroke tuning; the 30mm stop screw adjusts the extend end position without re-mounting the cylinder.
Variable Length Diverter
A diverting gate handling mixed package sizes uses the adjustable stop to alter the extend stroke on-site for optimal routing distances.
Adjustable End Stop Pusher
Accumulating loads of varying widths benefits from trimming the extend stroke by up to 30mm, setting a precise mechanical push-off limit.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-30S with the SAIJ100X400-30S
To replace the discontinued SIJ100X400-30S, order the direct replacement SAIJ100X400-30S, retaining the existing ISO 15552 mounting (Basic, FA, LB, TC). The 30mm adjust window is ideal if your extend stroke needs final on-site tuning between 370-400mm; if you need more trim, consider a larger window if available. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). Because the stroke is 400mm, ensure external guides support side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X400-30S
- ✓ 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 SIJ100X400-30S FAQ
Yes, the SIJ100X400-30S is discontinued. The direct replacement is the SAIJ100X400-30S, sharing the same ISO 15552 interface, 100mm bore, 400mm stroke, 30mm adjust window, and G1/2 port. The SAIJ also adds an upgraded piston seal.
The external stop screw provides a 30mm trim window, making the usable extend stroke 370-400mm. The stop sets position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X400-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X400-30S replacement — usually within 7-8 hours.