This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-40S, 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 SIJ100X75-40S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40S 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 SAIJ100X75-40S, 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 → SAIJ100X75-40S
- 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 SIJ100X75-40S
The AirTAC SIJ100X75-40S 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 window from the 75 mm nominal maximum.
The direct replacement is the SAIJ100X75-40S, reusing your ISO 15552 mounting without changes. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note the stop sets end position only; it is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-40S |
| 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 SAIJ100X75-40S 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 SAIJ100X75-40S 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 SIJ100X75-40S
| 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 SIJ100X75-40S Is Used
Press Fit Tuning
Dialing in exact insertion depth on a 100 mm bore press, using the 40 mm stop screw to trim the 75 mm extend stroke on-site for varying bearing lengths.
Variable Length Diverter
Adjusting a diverting flap's reach on a conveyor line, shortening the extend stroke up to 40 mm to accommodate different package widths without changing cylinders.
Adjustable End Stop
Setting precise mechanical end positions for a pallet stopper, tweaking the 75 mm extend window by up to 40 mm to handle mixed pallet sizes.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-40S with the SAIJ100X75-40S
To replace the discontinued SIJ100X75-40S, order the direct replacement SAIJ100X75-40S, keeping the identical 100 mm bore, 75 mm stroke, 40 mm adjust window, G1/2 port, and M20x1.5 rod thread. Choose the 40 mm adjust window if your final extend position needs on-site tuning between 35 and 75 mm. Mounting hardware (FA, LB, TC) carries over via the ISO 15552 interface. The -S suffix means a piston magnet is present for legacy CS1-B/DS1-B switches. Because the 75 mm stroke is under 300 mm, side-load rod deflection is minimal. For load holding on air loss, use an external rod lock or SAIL/BSAI variant, as the stop screw is not a brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-40S
- ✓ 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 SIJ100X75-40S FAQ
Yes, the SIJ100X75-40S is discontinued. The direct replacement is the SAIJ100X75-40S. It shares the identical ISO 15552 interface, 100 mm bore, 75 mm stroke, 40 mm adjust window, and G1/2 port, but adds an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 40 mm, allowing you to trim the 75 mm nominal extend stroke down to a 35 mm minimum on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-40S replacement — usually within 7-8 hours.