This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X250-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X250-30S 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 SIJ80X250-30S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-30S 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 SAIJ80X250-30S, 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 → SAIJ80X250-30S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-30S
The AirTAC SIJ80X250-30S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 220-250 mm extension out of the 250 mm nominal maximum. This 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, and a G3/8 port.
As this SIJ series is end-of-life, the exact drop-in replacement is the SAIJ80X250-30S, retaining the same interface, force, and adjustability. The SAIJ upgrade introduces a 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), translating to a 128 kg vertical lift with a 2:1 margin. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors. Note 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 SIJ80X250-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X250-30S |
| 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 SAIJ80X250-30S 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 SAIJ80X250-30S 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 SIJ80X250-30S
| 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 SIJ80X250-30S Is Used
Press Fit Tuning
Allows operators to fine-tune the extend stroke by up to 30 mm on-site to set precise pressing depths for bearing insertion without changing the cylinder body.
Variable Length Diverter
Adjusts the extend stop position dynamically to accommodate different package sizes on a sorting line, ensuring accurate physical diversion.
Adjustable Sealing Jaw
Trims the extend stroke to regulate the gap and crushing force on carton sealing jaws, preventing damage to varying product heights.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-30S with the SAIJ80X250-30S
To replace the discontinued SIJ80X250-30S, order the drop-in SAIJ80X250-30S, which preserves the 80 mm bore, 250 mm stroke, 30 mm adjust window, G3/8 port, and ISO 15552 mounting dimensions. 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. Choose the 30 mm adjust window if your extend stroke needs on-site tuning between 220 and 250 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix ensures a piston magnet for switch sensing. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding. The stop screw sets the end position but does not hold loads on air loss; for load holding, select an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X250-30S
- ✓ 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 SIJ80X250-30S FAQ
Yes, the SIJ80X250-30S is discontinued. The exact drop-in replacement is the SAIJ80X250-30S. It shares the same ISO 15552 interface, 80 mm bore, 250 mm nominal stroke, 30 mm adjust window, G3/8 port, and mounting options, while upgrading the piston seal to a two Y-shaped one-way element for longer life.
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 30 mm adjust window, allowing the extend stroke to be shortened from the 250 mm maximum down to 220 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
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