This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-40, 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 SIJ100X75-40
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40 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 SAIJ100X75-40, 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 → SAIJ100X75-40
- 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 SIJ100X75-40
The AirTAC SIJ100X75-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 35-75 mm stroke out of the 75 mm nominal maximum.
The direct replacement is the SAIJ100X75-40, matching the interface, force, and mounting. The SAIJ family uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note: this SKU lacks a -S magnet and cannot accept a sensor.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-40 |
| 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 SAIJ100X75-40 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 SAIJ100X75-40 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 SIJ100X75-40
| 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 SIJ100X75-40 Is Used
Press Fit Tuning
Allows operators to dial in the exact 35-75 mm extend position on-site for pressing bearings without machining hard stops.
Variable Diverter Gate
Adjusts the extend stroke dynamically to route different package sizes on a line, trimming up to 40 mm as needed.
Adjustable End Stop
Sets a precise physical end position for pallets, where the external screw provides a firm mechanical stop rather than relying solely on air.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40 with the SAIJ100X75-40
To replace the discontinued SIJ100X75-40, order the direct replacement SAIJ100X75-40, reusing your existing FA, LB, or TC ISO 15552 mounts. The 40 mm adjust window is ideal if your end-position needs field tuning between 35 and 75 mm. Because this SKU has no -S magnet, it cannot take a sensor; if detection is needed, select a -S SAIJ model. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-40
- ✓ 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 SIJ100X75-40 FAQ
Yes, the SIJ100X75-40 is discontinued. The direct replacement is the SAIJ100X75-40, which shares the identical ISO 15552 interface, 75 mm stroke, 40 mm adjust window, G1/2 port, and mounting options. The SAIJ upgrade also features a two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 40 mm adjust window, allowing you to shorten the extend stroke from the 75 mm maximum down to 35 mm. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-40 replacement — usually within 7-8 hours.