This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X50-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X50-50S 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 SIJ80X50-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50S 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 SAIJ80X50-50S, 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 → SAIJ80X50-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50S
The AirTAC SIJ80X50-50S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 50 mm nominal extend stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, setting the exact end position without custom machining. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, operating at 30-800 mm/s through a G3/8 port. This stop sets end position but is NOT a load lock; use an external rod lock for held loads.
The exact drop-in replacement is the SAIJ80X50-50S, reusing your ISO 15552 mounting interface and M20x1.5 rod thread. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Based on the 0.5 MPa push force, the safe working load is roughly 1508 N (60% of 2513 N), translating to a vertical lift capacity of about 128 kg with a 2:1 margin. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X50-50S |
| 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 SAIJ80X50-50S 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 SAIJ80X50-50S 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 SIJ80X50-50S
| 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 SIJ80X50-50S Is Used
Variable Stroke Clamping
Adjustable end-position clamping of varying thickness parts, trimming the extend stroke by up to 50 mm on-site to accommodate different material stacks without repositioning the cylinder.
Variable Length Diverter
On-site stroke tuning for conveyor diverters handling mixed package sizes, allowing the 50 mm extend stroke to be dialed in precisely to avoid crushing cartons.
Adjustable Depth Pusher
Pushing products into test fixtures or containers where the required insertion depth varies, using the external stop screw to set the exact 0-50 mm extend endpoint.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50S with the SAIJ80X50-50S
To replace the discontinued SIJ80X50-50S, order the drop-in SAIJ80X50-50S, matching the 80 mm bore, 50 mm stroke, 50 mm adjust window, G3/8 port, and -S magnet. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. Select the 50 mm adjust window when you need to trim the extend stroke on-site by up to 50 mm; the nominal 50 mm stroke remains the maximum. Reuse FA, LB, or TC mounts via the ISO 15552 interface. The -S suffix ensures piston magnet fitment for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). Because the 50 mm stroke is under 300 mm, standard side-load rules are relaxed, but note the stop screw sets end position and does not lock; for load holding on air loss, specify an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X50-50S
- ✓ 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 SIJ80X50-50S FAQ
Yes, the SIJ80X50-50S is discontinued. The exact drop-in replacement is the SAIJ80X50-50S. It shares the same ISO 15552 interface, 80 mm bore, 50 mm stroke, 50 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
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 50 mm, allowing you to trim the extend stroke by up to 50 mm on-site (usable extend stroke 0-50 mm). The stop sets end position and is NOT a load lock; the cylinder does not hold loads on air loss.
Related AirTAC SAI Cylinders
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