This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X70-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X70-50S 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 SIJ80X70-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 70mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X70-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X70-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-50S
The AirTAC SIJ80X70-50S 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, giving a usable 20-70 mm window from the 70 mm nominal maximum. This 80 mm bore features a Ø25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, a G3/8 port, and speeds of 30-800 mm/s. The stop sets the end position; it is not a load lock.
The exact drop-in replacement is the SAIJ80X70-50S, retaining the ISO 15552 mounting interface, force, and adjust window. Force is 2513 N push / 2268 N pull @0.5 MPa, and 4523 N push @0.9 MPa. The SAIJ upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. For sizing, the safe working load is roughly 1508 N (60% of the 0.5 MPa push), yielding a 128 kg vertical lift with a 2:1 margin.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X70-50S |
| Bore size | Ø80 mm |
| Stroke | 70 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 SAIJ80X70-50S 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 SAIJ80X70-50S 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 SIJ80X70-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 SIJ80X70-50S Is Used
Variable Pitch Forming
A metalforming line uses the 50 mm on-site adjust to fine-tune the 70 mm extend stroke for different material thicknesses without swapping the cylinder.
Adjustable Transfer Diverter
A packaging transfer diverter relies on the 20-70 mm usable stroke window to alter the push distance for varying box widths on the fly.
Tunable Sorting Gate
A logistics sorting gate uses the external stop screw to precisely set the extend end position, accommodating different product profiles accurately.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-50S with the SAIJ80X70-50S
To replace the discontinued SIJ80X70-50S, order the drop-in SAIJ80X70-50S, which keeps the G3/8 port and ISO 15552 interface. When sizing both ways, the 63 mm neighbor yields 1559 N push @0.5 MPa, while the 100 mm bore yields 3927 N push @0.5 MPa. Select the -50 mm adjust window if your field tuning requires trimming the 70 mm extend stroke down to 20 mm. Mounting options include FA, LB, and TC brackets. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Because this is a single-rod double-acting cylinder, it requires live air; the stop screw is not a lock. For held loads, use an external rod lock or the SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X70-50S
- ✓ 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 SIJ80X70-50S FAQ
Yes, the SIJ80X70-50S is discontinued. The exact drop-in replacement is the SAIJ80X70-50S. It shares the same ISO 15552 interface, 80 mm bore, 70 mm stroke, 50 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded piston seal for longer life.
The double-acting single-rod force is 2513 N push and 2268 N pull @0.5 MPa, 3518 N push @0.7 MPa, and 4523 N push @0.9 MPa, with a theoretical max of 513 kgf @1.0 MPa. The external stop screw provides a 50 mm adjust window, allowing you to trim the 70 mm nominal extend stroke down to 20 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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