This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X125-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X125-50S 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 SIJ80X125-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X125-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X125-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50S
The AirTAC SIJ80X125-50S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 125 mm nominal stroke and a 50 mm external stop screw window. This lets you trim the extend stroke on-site down to 75 mm without mechanical changes. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port. As an end-of-life product, the exact drop-in replacement is the SAIJ80X125-50S, retaining the same interface, force, and mounting.
The SAIJ successor uses 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 0.5 MPa push), yielding a 128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-50S |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-50S 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 SAIJ80X125-50S 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 SIJ80X125-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SIJ80X125-50S Is Used
Press Fit Tuning
Adjusting the extend stroke on-site by up to 50 mm allows precise press-fit depth without machining new spacers.
Variable Transfer Stops
Trimming the 125 mm stroke down to 75 mm adapts a divert stop to different package sizes on the fly.
Pallet Positioning
Field-tuning the extend end position accommodates varying pallet widths while using standard ISO 15552 mounts.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50S with the SAIJ80X125-50S
To replace the discontinued SIJ80X125-50S, order the drop-in SAIJ80X125-50S, which preserves the ISO 15552 mounting dimensions, 125 mm stroke, 50 mm adjust window, and G3/8 port. When sizing both ways, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N; choose the 80 mm bore if your required 3518 N push at 0.7 MPa sits comfortably between them. The 50 mm adjust window is ideal if your extend stroke needs field tuning between 75 and 125 mm. Mounting options include FA, LB, and TC brackets. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For stroke lengths of 300 mm or more, verify your side-load limits to prevent excessive rod wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-50S
- ✓ 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 SIJ80X125-50S FAQ
Yes, the SIJ80X125-50S is discontinued. The exact drop-in replacement is the SAIJ80X125-50S. It shares the same ISO 15552 interface, 80 mm bore, 125 mm stroke, 50 mm adjust window, and G3/8 port.
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 provides a 50 mm adjust window, allowing the 125 mm extend stroke to be shortened to 75 mm on-site.
Related AirTAC SAI Cylinders
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