This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X350-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X350-20 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 SIJ80X350-20
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X350-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X350-20
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20
The AirTAC SIJ80X350-20 is a double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 350 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 330-350 mm window. The 80 mm bore features a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable air cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, and 3518 N push at 0.7 MPa.
This SIJ model is discontinued; the exact drop-in replacement is the SAIJ80X350-20, sharing the same ISO 15552 interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Computed buyer insight: safe working load is ~1508 N (60% of the 0.5 MPa push), allowing a ~128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-20 |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80X350-20 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 SAIJ80X350-20 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 SIJ80X350-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SIJ80X350-20 Is Used
Press Fit Tuning
Needs field stroke tuning to dial in a 330-350 mm press fit without swapping cylinders, using the external stop to set exact end position.
Variable Length Diverter
Requires adjusting the extend stroke on-site by up to 20 mm to accommodate changing package sizes on a 80 mm bore diverter arm.
Pallet Stop Calibration
Demands precise extend end-position tuning to act as a physical stop for pallets, trimming the 350 mm stroke to match fixture variations.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20 with the SAIJ80X350-20
To replace the discontinued SIJ80X350-20, order the drop-in SAIJ80X350-20, reusing your FA, LB, or TC mounts. To size both ways: the 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N. Choose the 20 mm adjust window if you need 330-350 mm end-position tuning. This SKU lacks the -S magnet and cannot take a magnetic switch. For the 350 mm stroke, use external guides to prevent rod bending and side-load wear. The stop screw is not a lock; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-20
- ✓ 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 SIJ80X350-20 FAQ
Yes, the SIJ80X350-20 is discontinued. The exact drop-in replacement is the SAIJ80X350-20, which shares the same ISO 15552 interface, 80 mm bore, 350 mm stroke, 20 mm adjust window, G3/8 port, and mounting options.
The 80 mm bore provides 2513 N push / 2268 N pull @0.5 MPa, 3518 N push @0.7 MPa, and 4523 N push @0.9 MPa (max 513 kgf @1.0 MPa). The external stop screw window is 20 mm, allowing the 350 mm extend stroke to be shortened to 330 mm on-site. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X350-20
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