This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X80-30, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X80-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X80-30
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30
The AirTAC SIJ125X80-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. A G1/2 ported, 125mm bore unit with a 32mm rod, its external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable 50-80mm range. The direct replacement is the SAIJ125X80-30, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 dimensions but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This SKU lacks a magnet (-S), so it cannot accept legacy CS1-B/DS1-B sensors. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X80-30 |
| Bore size | Ø125 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ125X80-30 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAIJ125X80-30 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 Is Used
Press Fit Tuning
Dial in the exact 50-80mm extend position for seating bearings without machining hard stops.
Variable Diverter Gate
Adjust the extend stop on-site to alter the deflection angle for changing package sizes.
Pallet Positioning Stop
Fine-tune the 80mm extend endpoint to accommodate varying pallet depths on the line.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 with the SAIJ125X80-30
To replace the SIJ125X80-30, order the direct replacement SAIJ125X80-30, keeping the 30mm adjust window and 80mm nominal stroke. Select FA, LB, or TC mounts per ISO 15552 interface interchange. Because this SKU lacks the -S magnet, it cannot support position sensing. For strokes >=300mm, verify side-load tolerance to prevent guide wear. Note the 30-500mm/s speed range for this 125mm bore.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X80-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-30 FAQ
Yes, the SIJ125X80-30 is discontinued. The direct replacement is the SAIJ125X80-30, which shares the same ISO 15552 interface, 80mm stroke, 30mm adjust window, and G1/2 port. The SAIJ family also adds upgraded Y-shaped piston seals and SAIL/BSAI lock variants the SI line lacked.
The external stop screw allows trimming the extend stroke by up to 30mm on-site (usable 50-80mm). The stop sets end position only; it is not a load lock, so use an external rod lock for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X80-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X80-30 replacement — usually within 7-8 hours.