This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X300-75, 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 SIJ100X300-75
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X300-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X300-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X300-75
- 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 SIJ100X300-75
The AirTAC SIJ100X300-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore, 300mm nominal stroke, and a G1/2 port. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 225-300mm extension window. The direct replacement is the SAIJ100X300-75, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting dimensions for direct reuse of FA, LB, and TC brackets, and upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU lacks a -S magnet and cannot take a sensor; the stop screw sets end position but is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X300-75 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X300-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X300-75 |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100X300-75 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 SAIJ100X300-75 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 SIJ100X300-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SIJ100X300-75 Is Used
Press Fit Tuning
Pin insertion rigs needing field stroke tuning to dial in exact 225-300mm extend endpoints without re machining hard stops.
Variable Length Diverter
Package sorting lines where the 75mm on-site adjust window accommodates varying box sizes on a 300mm extend stroke.
Adjustable Height Lift
Material handling lifts requiring precise end-position trimming, using external guides to manage side-load on the 300mm stroke.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X300-75 with the SAIJ100X300-75
To replace the discontinued SIJ100X300-75, order the direct replacement SAIJ100X300-75, keeping the 75mm adjust window (usable extend 225-300mm) and G1/2 port. Choose FA, LB, or TC mounting per your ISO 15552 interface. Because this SKU has no -S suffix, it cannot accept a magnetic switch; add external sensing if needed. For the 300mm stroke, support the rod against side-load bending and use external guides. The stop screw sets end position only; for load-holding on air loss, use an external rod lock or pilot-operated check valve, or specify the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X300-75
- ✓ 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 SIJ100X300-75 FAQ
Yes, the SIJ100X300-75 is discontinued. The direct replacement is the SAIJ100X300-75, offering the same ISO 15552 interface, 100mm bore, 300mm nominal stroke, 75mm adjust window, and G1/2 port. The SAIJ family features an upgraded piston seal and adds lock variants like SAIL and BSAI.
The external stop screw provides a 75mm adjust window, shortening the extend stroke from the 300mm maximum down to 225mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X300-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X300-75 replacement — usually within 7-8 hours.