This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X80-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X80-50 in place of this model. 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 SIJ80X80-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X80-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X80-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50
The AirTAC SIJ80X80-50 is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, officially discontinued and replaced by the SAIJ80X80-50. It uses an external stop screw to trim the extend stroke by up to 50 mm on-site, yielding a usable 30 to 80 mm extend out of the 80 mm nominal maximum. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, rising to 3518 N at 0.7 MPa, with a G3/8 port and 36 mm adjustable cushions.
The SAIJ drop-in retains the exact interface, force, and M20x1.5 rod thread, but upgrades to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Computed buyer insight: safe working load is roughly 1508 N (60% of the 0.5 MPa push), giving a 128 kg vertical lift at a 2:1 margin. Note this SKU lacks a magnet for switches, and the stop screw sets end position only—it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X80-50 |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80X80-50 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 SAIJ80X80-50 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SIJ80X80-50 Is Used
Variable-depth pressing
Dialing in the exact extend stop on-site allows precise material pressing without machining custom fixed stops.
Adjustable diverters
Field-tuning the extend stroke lets a diverter accommodate changing package widths on the line.
Flexible stops
Adjusting the end position on the fly adapts a pallet stop to varying load lengths without swapping cylinders.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-50 with the SAIJ80X80-50
To replace the discontinued SIJ80X80-50, order the drop-in SAIJ80X80-50, reusing your FA, LB, or TC ISO 15552 mounts. Size both ways: the 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. Choose the 50 mm adjust window if you need to trim the extend stroke on-site from 80 mm down to 30 mm. This non-magnetic SKU cannot take a sensor; for stroke >=300 mm, confirm guide tolerance to avoid side-load wear. The stop screw sets end position but does not hold load on air loss—use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X80-50
- ✓ 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 SIJ80X80-50 FAQ
Yes, the SIJ80X80-50 is discontinued. The exact drop-in replacement is the SAIJ80X80-50, which matches the ISO 15552 interface, 80 mm bore, 50 mm adjust window, G3/8 port, and mounting. The SAIJ upgrades the piston seal to two Y-shaped one-way elements for longer life.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N at 0.9 MPa (max 513 kgf at 1.0 MPa). The external stop screw provides a 50 mm adjust window, shortening the 80 mm nominal extend stroke down to 30 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X80-50
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