This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X30-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X30-20S 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 SIJ80X30-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X30-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X30-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X30-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X30-20S
The AirTAC SIJ80X30-20S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 30 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a 10-30 mm usable window. The 80 mm bore uses a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable 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 SAIJ80X30-20S, sharing the same interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long 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 stop screw sets the end position but is not a lock; loads drift on air loss. For held loads, use an external rod lock or the SAIL/BSAI variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X30-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X30-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X30-20S |
| Bore size | Ø80 mm |
| Stroke | 30 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 SAIJ80X30-20S 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 SAIJ80X30-20S 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 SIJ80X30-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×30 | 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 SIJ80X30-20S Is Used
Short-Stroke Clamping
Ideal for clamping parts where the exact 10-30 mm extend position must be dialed in on-site to compensate for material thickness variations.
Sensor Positioning
Useful for pushing a part into a test fixture, allowing the 30 mm extend stroke to be fine-tuned by up to 20 mm to hit the exact sensor trigger point.
Diverting Gate Stop
Deployed as an adjustable stop gate on a conveyor, where trimming the extend stroke by up to 20 mm sets the precise product halt location.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X30-20S with the SAIJ80X30-20S
To replace the discontinued SIJ80X30-20S, order the exact drop-in SAIJ80X30-20S, which preserves the 30 mm nominal stroke, 20 mm adjust window, G3/8 port, and 4523 N peak push force. If resizing, the adjacent 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 20 mm adjust window when your extend stroke needs 10-30 mm of on-site tuning. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix confirms a built-in magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). As a 30 mm stroke is well under 300 mm, side-load rod deflection is negligible. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X30-20S
- ✓ 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 SIJ80X30-20S FAQ
Yes, the SIJ80X30-20S is discontinued. The exact drop-in replacement is the SAIJ80X30-20S. It shares the same ISO 15552 interface, 80 mm bore, 30 mm nominal stroke, 20 mm adjust window, G3/8 port, and 4523 N push force at 0.9 MPa.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa. The external stop screw provides a 20 mm adjust window, allowing you to trim the 30 mm nominal extend stroke down to 10 mm on-site.
Related AirTAC SAI Cylinders
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