This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X125-50H — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X125-50H 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 SIJ80X125-50H
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X125-50H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X125-50H
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50H
The AirTAC SIJ80X125-50H is a double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 125 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 75-125 mm window. This 80 mm bore uses a G3/8 port, M20x1.5 rod thread, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, rising to 3518 N at 0.7 MPa. The -H designation specifies Viton/FKM seals for 0-150 C high-temperature environments. This SIJ model is discontinued; the exact drop-in replacement is the SAIJ80X125-50H.
The SAIJ successor retains the ISO 15552 mounting interface, bore, stroke, and force, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Since this SKU lacks the -S suffix, it has no magnet and cannot accept a magnetic switch. Based on the 0.5 MPa push force, the computed safe working load is roughly 1508 N (60% of 2513 N), translating to a 128 kg vertical lift with a 2:1 margin. The stop screw sets the end position but is not a load lock; use an external rod lock or the SAIL/BSAI variants for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50H Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-50H |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-50H 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 SAIJ80X125-50H 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 SIJ80X125-50H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SIJ80X125-50H Is Used
Variable Position Clamping
Trimming the extend stroke by up to 50 mm on-site allows a clamping fixture to accommodate varying part heights without re-engineering the entire pneumatic assembly.
Adjustable Transfer Stops
An external stop screw provides precise end-position tuning for diverter gates on a conveyor, letting operators change the usable 75-125 mm stroke window for different package sizes.
High-Tactile Forming Press
Using the -H Viton seals for 0-150 C environments, the cylinder can field-adjust its extend stroke to control the compression depth of heat-sensitive materials.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50H with the SAIJ80X125-50H
To replace the discontinued SIJ80X125-50H, order the drop-in SAIJ80X125-50H, which preserves the 125 mm stroke, 50 mm adjust window, G3/8 port, and ISO 15552 mounting. 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; this 80 mm bore provides 2513 N. Choose the 50 mm adjust window if your application requires field tuning the extend stroke between 75 and 125 mm. Mounting options include Basic, FA, LB, and TC. Because this is the -H Viton seal variant, it suits 0-150 C high-temperature duties. Note that without the -S suffix, this cylinder cannot accept legacy CS1-B/DS1-B sensors. For strokes of 300 mm or longer, verify side-load constraints to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-50H
- ✓ 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 SIJ80X125-50H FAQ
Yes, the SIJ80X125-50H is discontinued. The exact drop-in replacement is the SAIJ80X125-50H. It shares the same ISO 15552 interface, 80 mm bore, 125 mm stroke, 50 mm adjust window, G3/8 port, and mounting options, while upgrading the piston seal to two Y-shaped one-way elements for longer life.
This double-acting single-rod cylinder has a 50 mm external stop screw window, allowing you to trim the extend stroke from the 125 mm maximum down to 75 mm. Force output is 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 stop screw sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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