This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X275-75, 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 SIJ80X275-75
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-75 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 SAIJ80X275-75, 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 → SAIJ80X275-75
- 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 SIJ80X275-75
The AirTAC SIJ80X275-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw shortens the extend stroke on-site by up to 75 mm, yielding a usable 200-275 mm stroke window from the 275 mm nominal maximum. The 80 mm bore features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G3/8 port, and 30-800 mm/s speed. Because this SKU lacks a -S suffix, it cannot accept a magnetic switch.
The direct replacement is the SAIJ80X275-75, matching the ISO 15552 mounting interface, force, and adjust window. The SAIJ family utilizes an upgraded two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; for held loads use an external rod lock or SAIL/BSAI variant.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-75 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-75 |
| 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 SAIJ80X275-75 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 SAIJ80X275-75 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 SIJ80X275-75
| 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 SIJ80X275-75 Is Used
Variable Depth Forming Press
Tune the 75 mm extend window on-site to alter material bend depth without swapping tooling.
Adjustable Transfer Diverter
Field-trim the extend stroke from 275 mm down to 200 mm to accommodate changing package sizes.
Tiered Pallet Positioning
Set the external stop screw to hit varied pallet heights precisely while using the full retraction.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-75 with the SAIJ80X275-75
To replace the SIJ80X275-75, order the direct replacement SAIJ80X275-75, retaining your FA, LB, or TC mounts. The 75 mm adjust window lets you tune the extend stroke down to 200 mm without machining. For stroke lengths at or above 300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X275-75
- ✓ 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 SIJ80X275-75 FAQ
Yes, the SIJ80X275-75 is discontinued. The direct replacement is the SAIJ80X275-75, offering the same ISO 15552 interface, 80 mm bore, 275 mm stroke, 75 mm adjust window, and G3/8 port. The SAIJ uses an upgraded piston seal and is a direct bolt-in upgrade.
The external stop screw provides a 75 mm adjust window, allowing the extend stroke to be shortened from the 275 mm nominal maximum down to 200 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X275-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X275-75 replacement — usually within 7-8 hours.