This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X1000-40S, 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.

The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X1000-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1000mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X1000-40S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X1000-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 1000 mm nominal stroke and a built-in piston magnet (-S). An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable extend range of 960-1000 mm. The stop sets the end position; it is not a load lock.
Because the SIJ is end-of-life, the direct replacement is the SAIJ100X1000-40S, which retains the same ISO 15552 mounting interface, bore, stroke, force, and porting. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that a plain cylinder drifts on air loss; for held loads use an external rod lock or the SAIL/BSAI lock variants.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X1000-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X1000-40S |
| Bore size | Ø100 mm |
| Stroke | 1000 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 SAIJ100X1000-40S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X1000-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1000 | 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).
Needs field stroke tuning to set the exact 980 mm ejection reach into a deep press bed, using the stop screw to dial in the final position without re-mounting the cylinder.
Requires adjusting the extend stroke on-site between 960 and 1000 mm to accommodate different pallet lengths on a transfer line prior to final locking.
Demands precise end-position tuning for a 1000 mm pusher arm deploying cartons into storage racks, trimming the stroke by up to 40 mm to clear varying lane widths.
To replace the discontinued SIJ100X1000-40S, order the direct replacement SAIJ100X1000-40S, which preserves the 100 mm bore, 1000 mm stroke, 40 mm adjust window, G1/2 port, and -S magnet. Choose the 40 mm adjust window if your extend stroke needs on-site tuning between 960 and 1000 mm. Mounting reuses ISO 15552 interface dimensions (Basic, FA, LB, TC). Because the stroke is 1000 mm, support the load with external guides to prevent rod bending and excessive side-load. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches.
Replacement checklist
Yes, the AirTAC SIJ100X1000-40S is discontinued. The direct replacement is the SAIJ100X1000-40S. It shares the same ISO 15552 interface, 100 mm bore, 1000 mm stroke, 40 mm adjust window, G1/2 port, and mounting, but adds an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 40 mm adjust window, allowing you to trim the extend stroke from the 1000 mm maximum down to 960 mm on-site. The stop sets end position only; it is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X1000-40S replacement — usually within 7-8 hours.