This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-50 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 SIJ80X450-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X450-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X450-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-50
The AirTAC SIJ80X450-50 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, yielding a usable 400-450 mm extension out of the 450 mm nominal maximum. This 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa (4523 N push at 0.9 MPa), features a 25 mm rod, M20x1.5 thread, and a G3/8 port. The exact drop-in replacement is the SAIJ80X450-50, matching the interface, force, and mounting.
The SAIJ successor incorporates an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (60% of the 2513 N @0.5 MPa figure), equating to a 128 kg vertical lift with a 2:1 margin. Note this non-magnetic SKU cannot take a switch. The stop screw sets end position but is not a lock; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-50 |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80X450-50 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 SAIJ80X450-50 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 SIJ80X450-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SIJ80X450-50 Is Used
Press Fit Tuning
Allows operators to dial in the exact 400-450 mm extend position for pressing bearings without machining hard stops.
Variable Length Diverter
Adjusts the extend stroke on-site to deflect varying package sizes on a sorting line by up to 50 mm.
Adjustable End Stop
Sets a precise mechanical end position for pallet positioning that can be tweaked as pallet dimensions change.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-50 with the SAIJ80X450-50
To replace the discontinued SIJ80X450-50, order the drop-in SAIJ80X450-50, which preserves the 450 mm stroke, 50 mm adjust window, and G3/8 port. When sizing both ways, the neighbouring 63 mm bore yields 2182 N push @0.7 MPa, while the 100 mm bore yields 5497 N push @0.7 MPa. Select the 50 mm adjust window if your end-position tuning falls within 400-450 mm. Mounting options include Basic, FA, LB, and TC. Because this unit lacks the -S suffix, it cannot accept a magnetic switch. Finally, at 450 mm stroke, mind the side-load and rod-bending limits, ensuring external guides support the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-50
- ✓ 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 SIJ80X450-50 FAQ
Yes, the SIJ80X450-50 is discontinued. The exact drop-in replacement is the SAIJ80X450-50. It shares the identical ISO 15552 interface, 80 mm bore, 450 mm stroke, 50 mm adjust window, and G3/8 port, but adds an upgraded piston seal.
The 80 mm bore delivers 2513 N push and 2268 N pull @0.5 MPa, 3518 N @0.7 MPa, and 4523 N @0.9 MPa (max 513 kgf). The external stop screw provides a 50 mm adjust window, shortening the extend stroke from 450 mm down to 400 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X450-50
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