This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X500-75S, 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 SIJ100X500-75S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X500-75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X500-75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X500-75S
- 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 SIJ100X500-75S
The AirTAC SIJ100X500-75S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 425-500 mm stroke. The nominal 500 mm is the maximum. The direct replacement is the SAIJ100X500-75S, sharing the same interface, force, and mounting.
The stop screw sets the end position but is not a load lock; the cylinder drifts on air loss. The SAIJ upgrade retains these ratings but uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-75S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X500-75S |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-75S 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 SAIJ100X500-75S 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 SIJ100X500-75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SIJ100X500-75S Is Used
Press Fit Tuning
Allows operators to dial in the exact 425-500 mm extend position on-site for pressing bearings without machining custom spacers.
Variable Length Diverter
Adjusts the extend stop to deflect different package sizes on a flow line, trimming up to 75 mm to match product profiles.
Adjustable Height Pallet Stop
Sets precise mechanical end positions for pallets of varying heights, relying on the external screw to set the final 425-500 mm stroke.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-75S with the SAIJ100X500-75S
To replace the discontinued SIJ100X500-75S, order the exact direct replacement SAIJ100X500-75S, keeping the 75 mm adjust window (425-500 mm usable extend). Mounting interfaces (Basic, FA, LB, TC) reuse directly under ISO 15552. Because the 500 mm stroke exceeds 300 mm, support the rod against side-load bending and use external guides. The -S magnet enables position sensing; for load-holding without live air, use an external rod lock or the SAIL/BSAI variants, as the stop screw is not a brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X500-75S
- ✓ 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 SIJ100X500-75S FAQ
Yes, the SIJ100X500-75S is discontinued. The direct replacement is the SAIJ100X500-75S. It shares the same ISO 15552 interface, 100 mm bore, 500 mm max stroke, 75 mm adjust window, G1/2 port, and mounting, but features an upgraded piston seal for longer life.
The external stop screw provides a 75 mm adjust window, shortening the extend stroke from the 500 mm maximum down to 425 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X500-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X500-75S replacement — usually within 7-8 hours.