This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X700-30, 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 SIJ125X700-30
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X700-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X700-30
- 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 SIJ125X700-30
The AirTAC SIJ125X700-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 700 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 670-700 mm extension window. Because this SKU lacks a -S magnet, it cannot accept a magnetic switch for position sensing.
The direct replacement is the SAIJ125X700-30, matching the ISO 15552 mounting interface, bore, force, and port. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that the external stop screw merely sets the end position; it is not a load lock, and a plain cylinder will drift on air loss.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X700-30 |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125X700-30 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 SAIJ125X700-30 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 SIJ125X700-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SIJ125X700-30 Is Used
Press Tonnage Calibration
Allows precise 0-30 mm extend trimming to dial in exact material contact depth during light-duty press operations without re-mounting the actuator.
Variable Package Diverting
Tunes the extend endpoint on-site to accommodate varying package sizes on a sorting line, ensuring positive contact without crushing the payload.
Adjustable Pallet Stops
Sets a firm mechanical end position for pallets of differing heights, enabling rapid format changeovers while maintaining a 670-700 mm stroke window.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30 with the SAIJ125X700-30
To replace the discontinued SIJ125X700-30, order the direct replacement SAIJ125X700-30 to reuse your existing ISO 15552 FA, LB, or TC mounts without machining. The -30 adjust window allows on-site extend stroke tuning from 670 to 700 mm. Because this SKU has no -S magnet, you cannot mount legacy CS1-B or DS1-B sensors; if sensing is required, select an SAIJ model with the -S suffix. For the 700 mm stroke, minimize side-load and rod-bending by incorporating external guides to support the rod. The stop screw sets end position only; for load holding on air loss, use an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X700-30
- ✓ 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 SIJ125X700-30 FAQ
Yes, the SIJ125X700-30 is discontinued. The direct replacement is the SAIJ125X700-30, which shares the identical ISO 15552 interface, 125 mm bore, 700 mm stroke, G1/2 port, and mounting options. The SAIJ upgrade also features a new two-piece Y-shaped piston seal for longer life.
The external stop screw provides a 30 mm adjust window, allowing you to trim the extend stroke from 700 mm down to 670 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X700-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X700-30 replacement — usually within 7-8 hours.