This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X275-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X275-20S 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 SIJ80X275-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X275-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X275-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-20S
The AirTAC SIJ80X275-20S 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 20 mm on-site, giving a usable 255-275 mm range (275 mm is the maximum). The 80 mm bore features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G3/8 port, and 30-800 mm/s speed. It delivers 2513 N push / 2268 N pull @0.5 MPa, and 4523 N push @0.9 MPa.
The exact drop-in replacement is the SAIJ80X275-20S, reusing your ISO 15552 mounting and porting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. 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. Note the stop sets end position but is not a load lock; use SAIL/BSAI or an external rod lock to hold loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-20S |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAIJ80X275-20S 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 SAIJ80X275-20S 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 SIJ80X275-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SIJ80X275-20S Is Used
Press Fit Tuning
Adjusting the extend stroke on-site by up to 20 mm allows operators to dial in the exact pressing depth for bearings without changing the cylinder.
Variable Length Diverter
Trimming the 275 mm stroke down to 255 mm accommodates changing package sizes on a sorting line, ensuring the diverter meets the new flap position.
Pallet Stop Positioning
Fine-tuning the end position by 20 mm adapts the stopper to varying pallet overhangs without needing to remount the ISO 15552 cylinder.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-20S with the SAIJ80X275-20S
To replace the discontinued SIJ80X275-20S, order the drop-in SAIJ80X275-20S, which matches the 80 mm bore, 275 mm max stroke, 20 mm adjust window, G3/8 port, and FA/LB/TC mountings. For sizing both ways: the neighbouring 63 mm bore yields 1559 N push @0.5 MPa, while the 100 mm bore yields 3927 N push @0.5 MPa. Choose the 20 mm adjust window if you need precise 255-275 mm extend tuning without external stops. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. For strokes >=300 mm, verify side-load limits to prevent rod binding. Remember, the stop screw sets end position but does not lock the load on air loss; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X275-20S
- ✓ 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 SIJ80X275-20S FAQ
Yes, the SIJ80X275-20S is discontinued. The exact drop-in replacement is the SAIJ80X275-20S. It shares the same ISO 15552 interface, 80 mm bore, 275 mm stroke, 20 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 / 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 allows you to trim the extend stroke by up to 20 mm on-site, yielding a usable 255-275 mm stroke. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
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