This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X100-50S, 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 SIJ100X100-50S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X100-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X100-50S
- 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 SIJ100X100-50S
The AirTAC SIJ100X100-50S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm nominal stroke and a built-in piston magnet. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable extend range of 50-100 mm. The direct replacement is the SAIJ100X100-50S, retaining the same interface, force, and adjust window.
The stop screw sets the end position but is not a load lock; the cylinder will drift on air loss. For load holding, use an external rod lock or the SAIL/BSAI variants. The SAIJ replacement adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X100-50S |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAIJ100X100-50S 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 SAIJ100X100-50S 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 SIJ100X100-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SIJ100X100-50S Is Used
Variable Stroke Pressing
Allows operators to fine-tune the extend stroke by up to 50 mm on-site to accommodate material thickness variations without re-mounting the actuator.
Adjustable Transfer Stops
Enables field adjustment of the stop position for different package sizes on a packaging line, utilizing the 50-100 mm usable extend range.
Custom Ejector Pins
Provides a tunable ejection distance for varying product depths, setting the precise end position via the external stop screw.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50S with the SAIJ100X100-50S
To replace the discontinued SIJ100X100-50S, order the direct replacement SAIJ100X100-50S, keeping the same 100 mm bore, 100 mm max stroke, 50 mm adjust window, G1/2 port, and -S magnet. Select the 50 mm adjust window if your process requires field tuning the extend stroke between 50 and 100 mm; this beats a fixed SAI with an external stop by integrating the buffer into the ISO 15552 footprint. Reuse FA, LB, or TC mounts directly. The -S suffix ensures a piston magnet for legacy CS1-B/DS1-B switches (current AirTAC switches are used on SAIJ). For stroke lengths >=300 mm, verify side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X100-50S
- ✓ 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 SIJ100X100-50S FAQ
Yes, the SIJ100X100-50S is discontinued. The direct replacement is the SAIJ100X100-50S. It shares the identical ISO 15552 mounting interface, 100 mm bore, 100 mm max stroke, 50 mm adjust window, G1/2 port, and force ratings, while adding an upgraded piston seal.
The external stop screw provides a 50 mm adjust window, allowing the extend stroke to be shortened from the 100 mm nominal maximum down to 50 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X100-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X100-50S replacement — usually within 7-8 hours.