This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X50-30S, 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 SIJ100X50-30S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X50-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X50-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X50-30S
- 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 SIJ100X50-30S
The AirTAC SIJ100X50-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore, G1/2 port, and a 50mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable 20-50mm window. This SIJ model is discontinued; the direct replacement is the SAIJ100X50-30S, matching the interface, bore, force, and mounting.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; for held loads use SAIL or BSAI.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-30S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X50-30S |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAIJ100X50-30S 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 SAIJ100X50-30S 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 SIJ100X50-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SIJ100X50-30S Is Used
Press Fit Tuning
Allows operators to dial in the exact 20-50mm extend position for seating bearings without swapping physical spacers.
Variable Depth Sealing
Adjusts the extend end-point on-site to accommodate different carton heights or seal depths during format changes.
End-Of-Line Testing
Sets precise travel limits for 200kg vertical lift test rigs where the exact contact point varies by product.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-30S with the SAIJ100X50-30S
To replace the discontinued SIJ100X50-30S, order the direct replacement SAIJ100X50-30S, keeping the 50mm nominal stroke and 30mm adjust window. Reuse FA, LB, or TC ISO 15552 mounts. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). For strokes >=300mm, verify side-load guidance. The stop screw sets end position only; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X50-30S
- ✓ 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 SIJ100X50-30S FAQ
Yes, the SIJ100X50-30S is discontinued. The direct replacement is the SAIJ100X50-30S, which shares the same ISO 15552 interface, 100mm bore, 50mm stroke, 30mm adjust window, G1/2 port, and mounting options. The SAIJ adds an upgraded two Y-shaped one-way piston seal.
The external stop screw allows you to trim the extend stroke by up to 30mm on-site, yielding a 20-50mm usable window. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X50-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X50-30S replacement — usually within 7-8 hours.