This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X75-50S, 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 SIJ80X75-50S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X75-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X75-50S
- 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 SIJ80X75-50S
The AirTAC SIJ80X75-50S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 75 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 25-75 mm window. The stop sets the end position and is not a load lock.
As SIJ is end-of-life, the direct replacement is the SAIJ80X75-50S, retaining the interface, force, and adjust window. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure. For load holding without live air, use SAIL or BSAI variants.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X75-50S |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80X75-50S 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 SAIJ80X75-50S 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 SIJ80X75-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SIJ80X75-50S Is Used
Variable Stroke Clamping
Ideal for clamping stations where material thickness varies, allowing operators to trim the extend stroke by up to 50 mm on-site without changing cylinders.
Adjustable Transfer Stops
Used in conveyor diverters to set precise package stopping points in the 25-75 mm window, accommodating different product sizes on the fly.
Tunable Pressing Operations
Provides adjustable end-position pressing force in light assembly tasks, letting technicians dial in the exact extend stop distance required.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-50S with the SAIJ80X75-50S
To replace the discontinued SIJ80X75-50S, order the exact direct replacement SAIJ80X75-50S to reuse your ISO 15552 mounts (Basic, FA, LB, TC). The 50 mm adjust window is ideal if your end position needs field tuning. The -S suffix means a piston magnet is present for legacy CS1-B/DS1-B switches. For stroke lengths >=300 mm, verify side-load guidance to prevent rod binding. The external stop sets position but does not lock; for held loads use an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X75-50S
- ✓ 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 SIJ80X75-50S FAQ
Yes, the SIJ80X75-50S is discontinued. The direct replacement is the SAIJ80X75-50S, offering the same ISO 15552 interface, 80 mm bore, 75 mm stroke, 50 mm adjust window, and G3/8 port. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 50 mm adjust window, allowing the extend stroke to be shortened from 75 mm down to 25 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X75-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X75-50S replacement — usually within 7-8 hours.