This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X80-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X80-20S 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 SIJ80X80-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-20S 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 SAIJ80X80-20S, 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 → SAIJ80X80-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-20S
The AirTAC SIJ80X80-20S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 60-80 mm window from the 80 mm nominal maximum. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port, with an M20x1.5 rod thread and 36 mm adjustable cushions. As an SIJ model it is end-of-life; the exact drop-in replacement is the SAIJ80X80-20S, retaining the same ISO 15552 mounting interface, force, and adjust window.
The SAIJ upgrade features an improved 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 0.5 MPa push), equating to a 128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a load lock. For held loads without live air, use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variants.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X80-20S |
| 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 SAIJ80X80-20S 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 SAIJ80X80-20S 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 SIJ80X80-20S
| 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 SIJ80X80-20S Is Used
Press Fit Tuning
Allows operators to dial in the exact 60-80 mm extend position for inserting bearings without machining hard stops.
Variable Diverter Gate
Adjusts the extend stroke on-site to route different package sizes on a line by tweaking the stop screw.
Adjustable End Stop
Provides a field-tunable end position for pallet stops, letting mechanics shorten the extend by up to 20 mm.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-20S with the SAIJ80X80-20S
To replace the discontinued SIJ80X80-20S, order the drop-in SAIJ80X80-20S, which matches the ISO 15552 dimensions, G3/8 port, and 20 mm adjust window. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N push. Choose the 20 mm adjust window if your extend stroke needs on-site tuning between 60 and 80 mm. Mounting options include FA, LB, and TC brackets. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X80-20S
- ✓ 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 SIJ80X80-20S FAQ
Yes, the SIJ80X80-20S is discontinued. The exact drop-in replacement is the SAIJ80X80-20S, offering the same ISO 15552 interface, 80 mm bore, 80 mm stroke, 20 mm adjust window, and G3/8 port.
It delivers 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 513 kgf max at 1.0 MPa. The external stop screw provides a 20 mm adjust window, allowing the extend stroke to be trimmed from 80 mm down to 60 mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X80-20S
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