This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X250-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X250-40S 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 SIJ80X250-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X250-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X250-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-40S
The AirTAC SIJ80X250-40S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 250 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 210-250 mm window. This 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable cushions, delivering 2513 N push and 2268 N pull at 0.5 MPa. The exact drop-in replacement is the SAIJ80X250-40S, sharing the same interface, force, and mounting.
The SAIJ successor retains the specifications but introduces an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. A computed buyer insight from the 0.5 MPa data suggests a safe working load around 1508 N (60% of push) or a 128 kg vertical lift with a 2:1 margin. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember, the external stop sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X250-40S |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAIJ80X250-40S 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 SAIJ80X250-40S 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 SIJ80X250-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SIJ80X250-40S Is Used
Variable Depth Machining Stops
Adjusts the extend stroke on-site by up to 40 mm to accommodate multiple part depths on a single fixture without retooling the entire actuator assembly.
Variable Height Carton Sealing
Provides field stroke tuning for packaging lines running mixed box heights, allowing operators to dial in the 210-250 mm extend window precisely.
Adjustable Diverting Arms
Sets precise reach distances in conveyor sortation systems where product widths vary, using the external stop to set the exact end position.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-40S with the SAIJ80X250-40S
To replace the discontinued SIJ80X250-40S, order the drop-in SAIJ80X250-40S, ensuring the -S magnet is specified for sensor tracking. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore provides 3927 N push. This 80 mm model gives 2513 N push at 0.5 MPa. The 40 mm adjust window is ideal if your end-position target varies within a 210-250 mm extend range. Mounting options include FA, LB, and TC brackets. For strokes of 300 mm or longer, verify side-load constraints to prevent rod binding. The stop screw defines end position only; it does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X250-40S
- ✓ 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 SIJ80X250-40S FAQ
Yes, the SIJ80X250-40S is discontinued. The exact drop-in replacement is the SAIJ80X250-40S. It shares the same ISO 15552 interface, 80 mm bore, 250 mm stroke, 40 mm adjust window, G3/8 port, and mounting options, while adding an upgraded piston seal.
The 80 mm bore 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 theoretical max of 513 kgf. The external stop screw provides a 40 mm adjust window, allowing the extend stroke to be trimmed from the 250 mm maximum down to 210 mm on-site.
Related AirTAC SAI Cylinders
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