This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X50-30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X50-30 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 SIJ80X50-30
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X50-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X50-30
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-30
The AirTAC SIJ80X50-30 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable 20-50mm window from the 50mm nominal maximum. The 80mm bore uses a G3/8 port and delivers 2513N push / 2268N pull force at 0.5MPa, rising to 4523N push at 0.9MPa.
The exact drop-in replacement is the SAIJ80X50-30, 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, the safe working load is roughly 1508N (60% of the 0.5MPa push figure), equating to a 128kg vertical lift with a 2:1 margin. Note: this non-magnetic SKU cannot take a switch, and the stop screw sets position only—it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-30 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X50-30 |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80X50-30 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 SAIJ80X50-30 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 SIJ80X50-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SIJ80X50-30 Is Used
Variable Position Clamping
Ideal for clamping stations where the material thickness varies, letting operators trim the 50mm extend stroke by up to 30mm on-site to seat parts perfectly without re-plumbing.
Adjustable Transfer Stops
Deployed as a conveyor divert stop where product sizes change frequently; the external screw provides a rigid end position for 20-50mm actuation without needing a separate shock absorber.
Tiered Package Sorting
Useful in packing lines needing field stroke tuning to push varying box profiles onto outbound lanes, setting a precise 30mm retraction from full extension to avoid crushing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-30 with the SAIJ80X50-30
To replace the discontinued SIJ80X50-30, order the SAIJ80X50-30; it maps directly with the same 50mm nominal stroke, 30mm adjust window, and G3/8 port. When sizing both ways, the adjacent 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N push at 0.5MPa. Choose the 30mm adjust window if your field tuning requires trimming the extend stroke by up to 30mm on-site. Mounting reuse is fully supported via FA, LB, or TC ISO 15552 interfaces. This SKU lacks the -S magnet and cannot accept a sensor. For stroke lengths >=300mm, verify side-load limits to prevent rod binding. The external stop sets end position but is not a lock; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X50-30
- ✓ 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 SIJ80X50-30 FAQ
Yes, the SIJ80X50-30 is discontinued. The exact drop-in replacement is the SAIJ80X50-30, which shares the identical ISO 15552 interface, 80mm bore, 50mm stroke, 30mm adjust window, and G3/8 port. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa. The external stop screw window is 30mm, allowing you to trim the nominal 50mm extend stroke down to 20mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X50-30
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