This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X370-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X370-20S 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 SIJ80X370-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X370-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 370mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X370-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke370 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X370-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X370-20S
The AirTAC SIJ80X370-20S is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, now discontinued and superseded by the drop-in SAIJ80X370-20S. It features an 80 mm bore, a 25 mm piston rod, and a G3/8 port. The external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable extend range of 350-370 mm. The nominal 370 mm stroke is the maximum. Force output matches the standard single-rod SAI figures: 2513 N push and 2268 N pull at 0.5 MPa, reaching 4523 N push at 0.9 MPa. The SAIJ replacement reuses the exact ISO 15552 mounting interface, port, and adjust window.
Upgrading to the SAIJ family brings an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For sizing, the 2513 N push at 0.5 MPa yields a safe working load of roughly 1508 N, or a vertical lift capacity of about 128 kg with a 2:1 margin. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X370-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X370-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X370-20S |
| Bore size | Ø80 mm |
| Stroke | 370 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 SAIJ80X370-20S 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 SAIJ80X370-20S 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 SIJ80X370-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×370 | 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 SIJ80X370-20S Is Used
Press Fit Tuning
Allows precise 350-370 mm extend adjustment for pressing bearings, ensuring exact insertion depth without re-engineering the entire fixture.
Divertor Positioning
Dial in the exact extend stop on-site to align a diverting gate perfectly with varying product widths on the line.
Carton Forming Stops
Adjust the extend end-position by up to 20 mm to accommodate different carton depths while maintaining consistent forming pressure.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X370-20S with the SAIJ80X370-20S
To replace the discontinued SIJ80X370-20S, order the drop-in SAIJ80X370-20S, which preserves the 80 mm bore, 370 mm stroke, 20 mm adjust window, G3/8 port, and ISO 15552 mounting. Size both ways by checking neighbouring bores: the 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 end-position tuning falls within a 350-370 mm extend range. Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches. Because the 370 mm stroke exceeds 300 mm, account for side-load and rod-bending forces by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X370-20S
- ✓ 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 SIJ80X370-20S FAQ
Yes, the SIJ80X370-20S is discontinued. The exact drop-in replacement is the SAIJ80X370-20S. It shares the same ISO 15552 interface, 80 mm bore, 370 mm stroke, 20 mm adjust window, G3/8 port, and mounting options, but features an upgraded piston seal.
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 window is 20 mm, allowing you to trim the extend stroke from the 370 mm maximum down to 350 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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