This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X225-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X225-50S 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 SIJ80X225-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X225-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 225mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X225-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X225-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X225-50S
The AirTAC SIJ80X225-50S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 225 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 175-225 mm window. The 80 mm bore features a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa.
The exact drop-in replacement is the SAIJ80X225-50S, reusing your ISO 15552 mounting hardware without interface changes. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For sizing, the 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. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL variant for holding.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X225-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X225-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X225-50S |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAIJ80X225-50S 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 SAIJ80X225-50S 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 SIJ80X225-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SIJ80X225-50S Is Used
Press Fit Tuning
Allows operators to dial in the exact 175-225 mm extend position on-site for pressing bearings without machining custom spacers.
Variable Length Diverter
Adjusts the extend stroke by up to 50 mm to deflect varying package sizes on a packaging line without swapping cylinders.
Adjustable Height Stop
Sets precise mechanical end-stops for pallet positioning, trimming the extend stroke on-site as pallet heights change.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X225-50S with the SAIJ80X225-50S
To replace the discontinued SIJ80X225-50S, order the drop-in SAIJ80X225-50S, ensuring the -S suffix is kept to retain the piston magnet for position sensing. When sizing both ways, the neighbouring 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N push at 0.7 MPa; this 80 mm cylinder provides 3518 N push at 0.7 MPa. Choose the 50 mm adjust window if your end-position needs field tuning across a 175-225 mm range. Existing FA, LB, or TC ISO 15552 mounts transfer directly. For strokes of 300 mm or longer, carefully verify side-load guidance to prevent rod bearing wear. The external stop screw merely sets the end position and will not hold a load on air loss—specify an external rod lock or pilot-operated check valve if load holding is required.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X225-50S
- ✓ 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 SIJ80X225-50S FAQ
Yes, the SIJ80X225-50S is discontinued. The exact drop-in replacement is the SAIJ80X225-50S. It shares the identical ISO 15552 interface, 80 mm bore, 225 mm stroke, 50 mm adjust window, G3/8 port, and mounting options. The SAIJ upgrade features a two Y-shaped one-way piston seal for longer life and lower start-up pressure.
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. The external stop screw has a 50 mm window, shortening the nominal 225 mm extend stroke down to 175 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
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