This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-50S, 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 SIJ100X75-50S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X75-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X75-50S
- 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 SIJ100X75-50S
The AirTAC SIJ100X75-50S is a discontinued double-acting double-rod adjustable-stroke ISO 15552 cylinder with a 100mm bore and G1/2 port. An external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 25-75mm extension out of the 75mm nominal maximum. The direct replacement is the SAIJ100X75-50S, retaining the exact mounting interface, force, and adjust window.
The SAIJ successor upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-50S |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-50S 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 SAIJ100X75-50S 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 SIJ100X75-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SIJ100X75-50S Is Used
Variable Press Stroke
Allows operators to dial in exact 25-75mm extend positions on-site for pressing components without machining custom spacers.
Adjustable Diverter
Tunes the extend stroke by up to 50mm to accommodate varying package widths on a G1/2 port-powered sorting line.
Dynamic End Stop
Sets precise mechanical end positions for pallets where the nominal 75mm stroke needs frequent shortening during format changes.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50S with the SAIJ100X75-50S
To replace the discontinued SIJ100X75-50S, order the SAIJ100X75-50S direct, which preserves the G1/2 port, M20x1.5 rod thread, 36mm cushions, and FA/LB/TC mountings. Choose the 50mm adjust window when you need on-site tuning flexibility between 25mm and 75mm. The -S magnet supports legacy CS1-B/DS1-B sensors. Because the 75mm stroke is under 300mm, side-load rod deflection is minimal. Note that speeds of 30-800mm/s apply to this 100mm bore.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-50S
- ✓ 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 SIJ100X75-50S FAQ
Yes, the SIJ100X75-50S is discontinued. The direct replacement is the SAIJ100X75-50S, offering the same ISO 15552 interface, 100mm bore, 75mm stroke, 50mm adjust window, and G1/2 port.
The external stop screw provides a 50mm adjust window, shortening the 75mm nominal extend stroke down to 25mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-50S replacement — usually within 7-8 hours.