This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X275-10S, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X275-10S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ80X275-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 275 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 265-275 mm window. This end-of-life model is replaced by the SAIJ80X275-10S.
The SAIJ direct maintains the exact ISO 15552 interface, force, and porting, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The stop screw sets end position but is not a lock; for load holding use SAIL/BSAI or an external rod lock. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-10S |
| Bore size | Ø80 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 SAIJ80X275-10S 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X275-10S 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). |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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).
Trimming the extend stroke by up to 10 mm on-site allows precise press-fit depth adjustment without changing the 275 mm cylinder body.
Field-tuning the extend end position to 265 mm accommodates varying package sizes on a divertor without mechanical spacers.
The external stop screw sets the exact pallet stop location, providing a 10 mm window to calibrate end positions for mixed pallet types.
To replace the discontinued SIJ80X275-10S, order the direct replacement SAIJ80X275-10S, which retains the G3/8 port, M20x1.5 rod, and 36 mm cushions. Choose the 10 mm adjust window if your extend stroke needs precise 265-275 mm field tuning. Mounting options include Basic, FA, LB, and TC. The -S suffix includes a piston magnet for legacy CS1-B/DS1-B switches. For stroke lengths >=300 mm, verify the side-load capacity to prevent rod deflection.
Replacement checklist
Yes, the SIJ80X275-10S is discontinued. The direct replacement is the SAIJ80X275-10S, offering the same ISO 15552 interface, 275 mm stroke, 10 mm adjust window, and G3/8 port.
The external stop screw offers a 10 mm adjust window, making the usable extend stroke 265-275 mm.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X275-10S replacement — usually within 7-8 hours.