This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X500-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X500-50S 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 SIJ80X500-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X500-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X500-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50S
The AirTAC SIJ80X500-50S 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 450-500 mm window from the 500 mm nominal maximum. The 80 mm bore features a 25 mm carbon piston rod, M20x1.5 rod thread, G3/8 port, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa. The exact drop-in replacement is the SAIJ80X500-50S, sharing the same interface, force, and mounting.
For sizing, a 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. The stop screw sets end position but is not a load lock; use an external rod lock for held loads. The SAIJ upgrade adds a two-piece Y-shaped piston seal for lower start-up pressure. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X500-50S |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80X500-50S 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 SAIJ80X500-50S 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 SIJ80X500-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SIJ80X500-50S Is Used
Press Fit Tuning
Dialing in exact insertion depths on an assembly line where 450-500 mm of extend travel must be trimmed on-site to avoid over-travel.
Variable Length Diverter
Actuating a routing gate where the end position requires a 50 mm field adjustment to accommodate changing package dimensions.
Adjustable End Stop
Positioning pallets on a 500 mm stroke conveyor where the physical stop needs precise 450-500 mm tuning without re-plumbing the pneumatics.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-50S with the SAIJ80X500-50S
To replace the discontinued SIJ80X500-50S, order the drop-in SAIJ80X500-50S, keeping the 80 mm bore, 500 mm max 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 push at 0.5 MPa. Select the 50 mm adjust window if your process needs field tuning between 450 and 500 mm; otherwise, a fixed-stroke SAI is simpler. Mounting interfaces include Basic, FA, LB, and TC. Because the 500 mm stroke is long, ensure external guides to prevent rod bending and side loads. The -S magnet enables legacy CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X500-50S
- ✓ 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 SIJ80X500-50S FAQ
Yes, the SIJ80X500-50S is discontinued. The exact drop-in replacement is the SAIJ80X500-50S. It shares the same ISO 15552 interface, 80 mm bore, 500 mm max stroke, 50 mm adjust window, G3/8 port, and -S magnet. The SAIJ family uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and 513 kgf max at 1.0 MPa. The external stop screw trims the extend stroke by up to 50 mm on-site, yielding a 450-500 mm usable window. The stop sets end position but is not a load lock; use an external rod lock for held loads.
Related AirTAC SAI Cylinders
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