This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X50-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X50-40 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 SIJ80X50-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-40 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 SAIJ80X50-40, 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 → SAIJ80X50-40
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-40
The AirTAC SIJ80X50-40 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 50 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a 10-50 mm usable window. The G3/8 port and 25 mm rod deliver 2513 N push and 2268 N pull at 0.5 MPa. The exact drop-in replacement is the SAIJ80X50-40, matching the bore, force, adjust window, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Computed buyer insight: safe working load is about 1508 N (60% of the 2513 N push), allowing a 128 kg vertical lift with a 2:1 margin. The stop sets end position but is not a load lock; use an external rod lock or SAIL variant for held loads. This SKU lacks a magnet and cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X50-40 |
| 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 SAIJ80X50-40 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 SAIJ80X50-40 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 SIJ80X50-40
| 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 SIJ80X50-40 Is Used
Variable Position Clamping
Trimming the extend stroke by up to 40 mm on-site allows a clamping head to adapt to varying raw material thicknesses without repositioning the entire fixture.
Adjustable Transfer Pusher
A 10-50 mm usable extend window lets operators fine-tune the pusher end point at the machine side to align different product sizes on a moving belt.
Tunable Sorting Diverter
Field-tuning the stroke end position enables a diverter gate to accommodate varying package widths on the fly without swapping the cylinder.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-40 with the SAIJ80X50-40
To replace the discontinued SIJ80X50-40, order the drop-in SAIJ80X50-40, reusing your existing FA, LB, or TC ISO 15552 mounts. The 40 mm adjust window is ideal if your end position needs field tuning between 10 and 50 mm. If sizing both ways, the 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. This non-magnetic SKU cannot support sensors; if you need position detection, select a -S model. For this 50 mm stroke, side-load is minimal, but for any stroke >=300 mm, guide the load to prevent rod binding. The stop screw sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X50-40
- ✓ 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 SIJ80X50-40 FAQ
Yes, the SIJ80X50-40 is discontinued. The exact drop-in replacement is the SAIJ80X50-40. It shares the identical ISO 15552 interface, 80 mm bore, 50 mm nominal stroke, 40 mm adjust window, G3/8 port, and mounting dimensions, but adds an upgraded two Y-shaped one-way piston seal for longer life.
The double-acting single-rod 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 allows you to trim the extend stroke by up to 40 mm on-site, giving a usable extend window of 10-50 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
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