This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X125-50STC — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X125-50STC 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 SIJ80X125-50STC
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50STC 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 SAIJ80X125-50STC, 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 → SAIJ80X125-50STC
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50STC
The AirTAC SIJ80X125-50STC is a discontinued 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. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, 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 SAIJ80X125-50STC, retaining the same interface, force, and TC mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (60% of the 2513 N push at 0.5 MPa), yielding 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 SAIL/BSAI variant for held loads. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50STC Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-50STC |
| 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 SAIJ80X125-50STC 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 SAIJ80X125-50STC 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 SIJ80X125-50STC
| 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 SIJ80X125-50STC Is Used
Variable Depth Forming Press
Needs field stroke tuning to alter the extend reach from 125 mm down to 75 mm for different material thicknesses without changing the cylinder.
Adjustable Package Diverter
Requires on-site stroke trimming up to 50 mm to deflect varying box sizes accurately on a TC-mounted pivot without repositioning the whole assembly.
Tiered Bin Insertion
Uses the adjustable stop screw to set precise insertion depths between 75 mm and 125 mm for different container heights on dynamic shelving.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-50STC with the SAIJ80X125-50STC
To replace the discontinued SIJ80X125-50STC, map directly to the SAIJ80X125-50STC drop-in. When sizing both ways, the adjacent 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. Choose the 50 mm adjust window if your field stroke tuning requires trimming the 125 mm extend down to a 75 mm minimum. The TC mounting accessory provides a trunnion interface for pivoting, and the -S magnet enables position sensing. For strokes at or above 300 mm, verify side-load limits to prevent rod binding. The external stop sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-50STC
- ✓ 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 SIJ80X125-50STC FAQ
Yes, the SIJ80X125-50STC is discontinued. The exact drop-in replacement is the SAIJ80X125-50STC, which shares the same ISO 15552 interface, 80 mm bore, 125 mm stroke, 50 mm adjust window, G3/8 port, and TC mounting.
The 80 mm bore has a G3/8 port and delivers 2513 N push / 2268 N pull @0.5 MPa, 3518 N push @0.7 MPa, and 4523 N push @0.9 MPa (max 513 kgf @1.0 MPa). The external stop screw provides a 50 mm adjust window, allowing the 125 mm extend stroke to be shortened to 75 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X125-50STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X125-50STC replacement — usually within 7-8 hours.