This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X450-40S, 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 SIJ100X450-40S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X450-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X450-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X450-40S
- 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 SIJ100X450-40S
The AirTAC SIJ100X450-40S 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 40 mm on-site, yielding a usable 410-450 mm stroke from the 450 mm nominal maximum. This stop sets the end position but is not a load lock.
The direct replacement is the SAIJ100X450-40S, sharing the same interface, force, and mounting. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-40S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X450-40S |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAIJ100X450-40S 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 SAIJ100X450-40S 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 SIJ100X450-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SIJ100X450-40S Is Used
Press Fit Tuning
Allows precise on-site adjustment of the extend stroke during press-fit operations, accommodating material thickness variations without changing the cylinder.
Variable Length Diverter
Provides adjustable reach for a diverter arm on a conveyor, trimming the extend stroke by up to 40 mm to handle different package sizes accurately.
Adjustable End Stop
Sets a precise mechanical end position for pallet positioning, where the external stop screw dials in the exact 410-450 mm extend distance required.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X450-40S with the SAIJ100X450-40S
To replace the discontinued SIJ100X450-40S, order the direct replacement SAIJ100X450-40S, retaining the identical ISO 15552 mounting interface and G1/2 port. Choose the 40 mm adjust window if your extend stroke needs on-site tuning between 410-450 mm. Reuse FA, LB, or TC mounts. The -S magnet enables position sensing; the SAIJ uses current AirTAC switches over legacy CS1-B/DS1-B. For the 450 mm stroke, use external guides to prevent rod bending and side-load damage. Remember the stop screw is not a lock; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X450-40S
- ✓ 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 SIJ100X450-40S FAQ
Yes, the AirTAC SIJ100X450-40S is discontinued. The direct replacement is the SAIJ100X450-40S. It shares the same ISO 15552 interface, 100 mm bore, 450 mm stroke, 40 mm adjust window, G1/2 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 40 mm, allowing you to trim the extend stroke on-site from the 450 mm maximum down to 410 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X450-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X450-40S replacement — usually within 7-8 hours.