This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-20S, 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 SIJ100X75-20S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-20S 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 SAIJ100X75-20S, 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 → SAIJ100X75-20S
- 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 SIJ100X75-20S
The AirTAC SIJ100X75-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder featuring a built-in piston magnet. It uses an external stop screw to trim the extend stroke by up to 20 mm on-site, yielding a usable 55-75 mm stroke from the 75 mm nominal maximum. The direct replacement is the SAIJ100X75-20S, matching the G1/2 port, M20x1.5 rod thread, 36 mm cushions, and 30-800 mm/s speed.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-20S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-20S |
| 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 SAIJ100X75-20S 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 SAIJ100X75-20S 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 SIJ100X75-20S
| 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 SIJ100X75-20S Is Used
Press Fit Tuning
Adjusts the 55-75 mm extend on-site to set precise bearing press depth without machining custom spacers.
Carton Flap Folding
Trims the extend stroke by up to 20 mm to accommodate varying package heights on a packaging line.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-20S with the SAIJ100X75-20S
To replace the discontinued SIJ100X75-20S, order the direct replacement SAIJ100X75-20S, retaining the ISO 15552 mounting interface and -S magnet for CS1-B/DS1-B switches. Choose the 20 mm adjust window when you need precise 55-75 mm extend tuning. Reuse FA, LB, or TC mounts. For strokes over 300 mm, verify side-load limits. The stop screw sets end position but does not hold loads on air loss; for load holding select the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-20S
- ✓ 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 SIJ100X75-20S FAQ
Yes, the SIJ100X75-20S is discontinued. The direct replacement is the SAIJ100X75-20S, offering the same ISO 15552 interface, 100 mm bore, 75 mm stroke, 20 mm adjust window, G1/2 port, and mounting. The SAIJ adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 20 mm adjust window, shortening the 75 mm nominal extend stroke down to 55 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-20S replacement — usually within 7-8 hours.