This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X25-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X25-20S 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 SIJ80X25-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X25-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X25-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20S
The AirTAC SIJ80X25-20S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 25 mm nominal stroke and a built-in magnetic piston (-S). An external stop screw allows you to trim the extend stroke by up to 20 mm on-site, yielding a usable 5-25 mm stroke window. The stop screw strictly sets the end position; it is not a load lock. At 0.5 MPa this 80 mm bore generates 2513 N push and 2268 N pull force via its G3/8 port. The exact drop-in replacement is the SAIJ80X25-20S, sharing the same interface, force, and mounting.
The SAIJ successor retains the upgraded SAI piston seal (two Y-shaped one-way elements for low start-up pressure and long life) and adds family variants like the SAIL air-released lock and BSAI clamp-lock that the legacy SI line lacked. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), translating to a 128 kg vertical lift with a 2:1 margin. Note that a plain cylinder drifts on air loss; for held loads use an external rod lock or pilot-operated check valve.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X25-20S |
| Bore size | Ø80 mm |
| Stroke | 25 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 SAIJ80X25-20S 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 SAIJ80X25-20S 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 SIJ80X25-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SIJ80X25-20S Is Used
Short-Stroke Clamping
Ideal for clamping stations needing exact 5-25 mm extend positions trimmed on-site to compensate for material thickness variations.
Diverting Gate Stops
Provides adjustable physical stops on conveying lines where the extend endpoint must be tuned precisely during machine commissioning.
Light Pressing Tasks
Used for pressing subcomponents into housings, utilizing the 2513 N push force at 0.5 MPa with a tuned final stroke.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20S with the SAIJ80X25-20S
To replace the discontinued SIJ80X25-20S, order the drop-in SAIJ80X25-20S, which preserves the 80 mm bore, 25 mm max stroke, 20 mm adjust window, G3/8 port, and M20x1.5 rod thread. 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 20 mm adjust window if your assembly requires field tuning of the extend end-position within a 5-25 mm range; the stop screw sets position but does not lock the load. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). Because the stroke is 25 mm (under 300), side-load rod deflection is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X25-20S
- ✓ 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 SIJ80X25-20S FAQ
Yes, the SIJ80X25-20S is discontinued. The exact drop-in replacement is the SAIJ80X25-20S, which matches the 80 mm bore, 25 mm max stroke, 20 mm adjust window, G3/8 port, and ISO 15552 mounting interface.
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 513 kgf max at 1.0 MPa. The external stop screw allows trimming the extend stroke by up to 20 mm on-site, giving a usable 5-25 mm window. The stop sets position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X25-20S
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