This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X275-40, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 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 SAIJ80X275-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X275-40
- 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40
The AirTAC SIJ80X275-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the direct replacement SAIJ80X275-40. It features an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 235-275 mm window from the 275 mm maximum. The SAIJ successor retains the exact interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Remember the stop screw sets the end position; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads. This non-magnetic SKU cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-40 |
| 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 SAIJ80X275-40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X275-40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40
| 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).
Where the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 Is Used
Variable Press Stroke
Trimming the extend stroke by up to 40 mm on-site allows precise positioning for pressing assemblies without machining a custom cylinder.
Adjustable Diverter Arm
Fine-tuning the 275 mm extend length lets operators alter the divert point on a conveyor line to accommodate changing package widths.
Custom End-Stop Positioning
Setting a specific 235 mm end position provides a dedicated physical stop for pallets or workpieces, adjustable as layout needs evolve.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 with the SAIJ80X275-40
To replace this discontinued model, order the direct replacement SAIJ80X275-40, keeping the same ISO 15552 mounting footprint and G3/8 port. Select the 40 mm adjust window if you need to trim the extend stroke on-site from 275 mm down to 235 mm. Mounting options include FA, LB, and TC brackets. This SKU lacks the -S magnet, so it cannot accept a sensor. For strokes at or above 300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X275-40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40 FAQ
Yes, the SIJ80X275-40 is discontinued. The direct replacement is the SAIJ80X275-40, which shares the same ISO 15552 interface, 80 mm bore, 275 mm stroke, 40 mm adjust window, G3/8 port, and mounting options.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, giving a usable 235-275 mm window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X275-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X275-40 replacement — usually within 7-8 hours.