This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X40-30S, 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 SIJ100X40-30S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X40-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 40mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X40-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X40-30S
- 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 SIJ100X40-30S
The AirTAC SIJ100X40-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. An external stop screw lets you trim the extend stroke by up to 30mm on-site, yielding a usable 10-40mm extend window. The stop sets the end position but is not a load lock; use SAIL or an external rod lock for held loads.
The SAIJ successor features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. It also adds SAIF and BSAI variants the SI line lacked. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X40-30S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X40-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X40-30S |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAIJ100X40-30S 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 SAIJ100X40-30S 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 SIJ100X40-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SIJ100X40-30S Is Used
Short-Stroke Clamping
Adjustable end-position clamping of castings on a machining line, allowing operators to dial in the exact 10-40mm travel for varying part tolerances.
Variable Depth Sealing
Pinpoint sealing or filling heads on packaging equipment where the extend stroke must be tuned precisely on-site to prevent product crushing.
Transfer Stopper Blocks
Acting as a height-specific stop block on a conveyor, where the 30mm trim window accommodates different package profiles without swapping cylinders.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X40-30S with the SAIJ100X40-30S
To replace the discontinued SIJ100X40-30S, order the SAIJ100X40-30S direct; the ISO 15552 mounting interface dimensions allow reusing existing FA, LB, or TC brackets without machining. The 30mm adjust window is ideal for fine-tuning the 10-40mm extend stroke on-site. The -S suffix ensures a piston magnet is present for legacy CS1-B/DS1-B sensors. Because the 40mm stroke is under 300mm, side-load rod deflection is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X40-30S
- ✓ 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 SIJ100X40-30S FAQ
Yes, the SIJ100X40-30S is discontinued. The direct replacement is the SAIJ100X40-30S, which shares the identical ISO 15552 interface, 100mm bore, 40mm stroke, 30mm adjust window, G1/2 port, and mounting options.
The theoretical max is 801kgf at 1.0MPa. The external stop screw provides a 30mm adjust window, allowing you to shorten the 40mm nominal extend stroke down to 10mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X40-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X40-30S replacement — usually within 7-8 hours.