This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X275-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X275-40S 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 SIJ80X275-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40S 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 SAIJ80X275-40S, 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 → SAIJ80X275-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40S
The AirTAC SIJ80X275-40S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 275 mm nominal stroke and a built-in piston magnet. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable forward range of 235 to 275 mm. The Ø80 mm bore features a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable air cushions at each end. The stop screw sets the end position; it is not a load lock, so use an external rod lock or pilot-operated check valve for held loads.
The exact drop-in replacement is the SAIJ80X275-40S, matching the ISO 15552 interface, bore, force, port, and mounting. At 0.5 MPa it delivers 2513 N push and 2268 N pull force, peaking at 4523 N push at 0.9 MPa. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. For sizing, the 0.5 MPa safe working load is roughly 1508 N (60% of push), yielding a 128 kg vertical lift with a 2:1 margin.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-40S |
| 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 SAIJ80X275-40S 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 SAIJ80X275-40S 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 SIJ80X275-40S
| 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 SIJ80X275-40S Is Used
Variable Press Stroke
Dialing in the exact contact distance on a pneumatic press where material thickness varies, using the 40 mm trim to prevent over-travel without swapping cylinders.
Adjustable Diverter Arm
Tuning a sorting diverter arm on a conveyor line to accommodate different package sizes by fine-tuning the extend endpoint on-site.
Custom Crate Positioning
Setting precise push-off distances for varying pallet depths in a packaging cell, adjusting the stroke endpoint to match crate dimensions.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-40S with the SAIJ80X275-40S
To replace the discontinued SIJ80X275-40S, order the drop-in SAIJ80X275-40S, which retains the exact ISO 15552 mounting dimensions, G3/8 port, and 40 mm adjust window. When sizing both ways, the neighboring Ø63 bore provides 2182 N push at 0.7 MPa, while the Ø100 bore yields 5497 N push at 0.7 MPa. Choose the 40 mm adjust window if your extend stroke needs on-site tuning between 235 and 275 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches. For strokes of 275 mm or longer, verify side-load guidance to prevent rod bearing wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X275-40S
- ✓ 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 SIJ80X275-40S FAQ
Yes, the SIJ80X275-40S is discontinued. The exact drop-in replacement is the SAIJ80X275-40S. It shares the same ISO 15552 interface, Ø80 bore, 275 mm stroke, 40 mm adjust window, G3/8 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal for longer life.
The double-acting single-rod SIJ80X275-40S delivers 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 provides a 40 mm trim window, allowing the extend stroke to be shortened from the 275 mm maximum down to 235 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X275-40S
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