This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X350-75, 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 SIJ100X350-75
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X350-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 350mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X350-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X350-75
- 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 SIJ100X350-75
The AirTAC SIJ100X350-75 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and 350 mm maximum stroke. An external stop screw allows you to trim the extend stroke by up to 75 mm on-site, yielding a usable forward travel of 275-350 mm. It features a 25 mm rod, M20x1.5 rod thread, G1/2 port, and 36 mm adjustable air cushions at each end. This SIJ model is discontinued; the direct replacement is the SAIJ100X350-75, matching the interface, force, and porting.
The SAIJ successor retains the ISO 15552 mounting dimensions but incorporates an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and longer life. Note this SKU has no -S magnet and cannot accept a sensor. The stop screw sets the end position but is not a load lock; on air loss the piston drifts, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X350-75 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X350-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X350-75 |
| Bore size | Ø100 mm |
| Stroke | 350 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 SAIJ100X350-75 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 SAIJ100X350-75 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 SIJ100X350-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SIJ100X350-75 Is Used
Variable Press Stroke
Trimming the extend stroke by up to 75 mm on-site allows a press to accommodate varying material thicknesses without re-mounting the cylinder.
Adjustable Diverter Arm
A 350 mm diverter can be fine-tuned down to 275 mm to redirect different package sizes on a conveyor line precisely at the extended stop point.
Variable Depth Stops
Positioning stops in a warehouse handling system can be dialed in by up to 75 mm to adapt to varying pallet depths without changing the actuator.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X350-75 with the SAIJ100X350-75
To replace the discontinued SIJ100X350-75, order the SAIJ100X350-75 direct, keeping the 350 mm nominal stroke and 75 mm adjust window. Mounting interchange is maintained via FA, LB, or TC brackets on the ISO 15552 interface. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch. For the 350 mm stroke, verify side-load limits and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X350-75
- ✓ 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 SIJ100X350-75 FAQ
Yes, the SIJ100X350-75 is discontinued. The direct replacement is the SAIJ100X350-75, which shares the same ISO 15552 interface, 100 mm bore, 350 mm stroke, 75 mm adjust window, G1/2 port, and mounting options, but adds an upgraded piston seal.
Speed is 30-800 mm/s. The external stop screw shortens the extend stroke by up to 75 mm, giving a usable range of 275-350 mm. It uses a G1/2 port and 36 mm cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X350-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X350-75 replacement — usually within 7-8 hours.