This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X120-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X120-50 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 SIJ80X120-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X120-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 120mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X120-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X120-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X120-50
The AirTAC SIJ80X120-50 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 70-120 mm extend out of the 120 mm nominal maximum. The 80 mm bore uses a G3/8 port, a Ø25 mm rod with an M20x1.5 thread, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa.
The direct drop-in replacement is the SAIJ80X120-50, retaining the exact interface, force, and adjust window. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), yielding a 128 kg vertical lift with a 2:1 margin. Note this SKU lacks a -S magnet and cannot take a switch; the stop sets end position but is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X120-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X120-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X120-50 |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80X120-50 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 SAIJ80X120-50 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 SIJ80X120-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SIJ80X120-50 Is Used
Variable Pitch Forming
A metalforming line uses the 50 mm adjust window to tune the extend stroke on-site for different material thicknesses without swapping the entire actuator.
Adjustable Carton Sealing
Packaging machinery requires precise end-position tuning for varying box heights; the stop screw provides a 70-120 mm usable extend to dial in the contact force.
Variable Length Diverter
A conveyor diverter needs field stroke tuning to route different parcel sizes accurately, using the external stop to shorten the extend movement as needed.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X120-50 with the SAIJ80X120-50
To replace the discontinued SIJ80X120-50, order the drop-in SAIJ80X120-50, which preserves the 50 mm adjust window, 120 mm max stroke, and G3/8 port. When sizing both ways, the 63 mm neighbour yields 1559 N push at 0.5 MPa, while the 100 mm bore offers 3927 N push at 0.5 MPa. Reuse existing FA, LB, or TC ISO 15552 mounts. Because this SKU has no -S suffix, it cannot accept a magnetic switch; add an external sensor if detection is needed. For strokes at or above 300 mm, verify side-load limits to prevent guide wear. Remember the external stop screw sets the end position but does not lock the load; for held loads use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X120-50
- ✓ 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 SIJ80X120-50 FAQ
Yes, the SIJ80X120-50 is discontinued. The exact drop-in replacement is the SAIJ80X120-50. It shares the same ISO 15552 interface, 80 mm bore, 120 mm stroke, 50 mm adjust window, G3/8 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa, with a theoretical max of 513 kgf at 1.0 MPa. The external stop screw allows you to trim the extend stroke by up to 50 mm on-site, yielding a usable 70-120 mm extend. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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