This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X50-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X50-50 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 SIJ80X50-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50 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 SAIJ80X50-50, 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 → SAIJ80X50-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50
The AirTAC SIJ80X50-50 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 50 mm on-site, setting the end position precisely within the 0-50 mm window. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, a G3/8 port, and speeds of 30-800 mm/s. The exact drop-in replacement is the SAIJ80X50-50, matching the bore, force, adjust window, and mounting.
This 80 mm bore generates 2513 N push and 2268 N pull at 0.5 MPa, reaching 4523 N at 0.9 MPa. A computed buyer insight: safe working load is ~1508 N (60% of the 0.5 MPa push), yielding a 128 kg vertical lift with a 2:1 margin. The SAIJ upgrade uses two Y-shaped one-way piston seals for low start-up pressure. The stop screw sets position but is not a load lock; use SAIL or BSAI for held loads. This non-magnetic SKU cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X50-50 |
| 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 SAIJ80X50-50 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 SAIJ80X50-50 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 SIJ80X50-50
| 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 SIJ80X50-50 Is Used
Variable Position Clamping
Trimming the extend stroke by up to 50 mm on-site allows precise clamping of varying part thicknesses without repositioning the entire fixture.
Adjustable Transfer Stop
An external stop screw sets the exact pusher end position for different package sizes on a line, providing field flexibility for changing product dimensions.
Tunable Ejector Stroke
Dialing in the extend stroke prevents over-travel when ejecting delicate components from a machined nest, accommodating multiple part families on one station.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50 with the SAIJ80X50-50
To replace the discontinued SIJ80X50-50, order the drop-in SAIJ80X50-50, reusing your ISO 15552 FA, LB, or TC mounts and G3/8 port. The 50 mm adjust window lets you tune the extend end-position on-site; if you need less variability, a fixed SAI is simpler. Sizing both ways: the 63 mm bore gives 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. This non-magnetic SKU lacks a -S sensor groove, so it cannot accept legacy CS1-B/DS1-B switches. For strokes >=300 mm, verify side-load guidance to prevent rod binding. Remember, the external stop sets the end position but does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X50-50
- ✓ 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 SIJ80X50-50 FAQ
Yes, the SIJ80X50-50 is discontinued. The exact drop-in replacement is the SAIJ80X50-50. It shares the identical ISO 15552 interface, 80 mm bore, 50 mm adjust window, 25 mm rod, G3/8 port, and mounting options, ensuring a seamless swap.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N at 0.7 MPa, and 4523 N at 0.9 MPa. The external stop screw provides a 0-50 mm adjustable extend window. Note that the stop sets end position but does not lock the load.
Related AirTAC SAI Cylinders
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