This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X700-40, 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 SIJ125X700-40
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X700-40 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 SAIJ125X700-40, 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 → SAIJ125X700-40
- 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 SIJ125X700-40
The AirTAC SIJ125X700-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. The direct replacement is the SAIJ125X700-40, retaining the 125mm bore, 700mm maximum stroke, G1/2 port, and 40mm on-site extend-trim window. An external stop screw allows you to shorten the extend stroke by up to 40mm on-site, yielding a usable 660-700mm stroke.
The SAIJ upgrade incorporates a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Because this SKU lacks the -S suffix, it has no magnet and cannot accept a magnetic switch. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-40 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X700-40 |
| 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 SAIJ125X700-40 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 SAIJ125X700-40 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 SIJ125X700-40
| 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 SIJ125X700-40 Is Used
Press Fit Tuning
Allows operators to dial in a precise 660-700mm extend position on-site for pressing bearings, compensating for material thickness variations without changing the cylinder.
Divertor Positioning
Adjusts the extend stop to handle varying package sizes on a packaging line, ensuring the 125mm bore pushes with 6136N without over-traveling.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-40 with the SAIJ125X700-40
To replace the discontinued SIJ125X700-40, order the direct replacement SAIJ125X700-40, which preserves the ISO 15552 mounting interface, M27x2 rod thread, and G1/2 port. The -40 adjust window lets you tune the extend stroke down to 660mm without adding external stops. Reuse FA, LB, or TC mounts directly. Because this SKU lacks -S, it cannot take a sensor. Finally, at 700mm stroke, mind side-load and rod-bending forces—use external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X700-40
- ✓ 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 SIJ125X700-40 FAQ
Yes, the SIJ125X700-40 is discontinued. The direct replacement is the SAIJ125X700-40. It shares the same ISO 15552 interface, 125mm bore, 700mm stroke, 40mm adjust window, G1/2 port, and mounting options, but adds an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 40mm adjust window, shortening the extend stroke from 700mm down to 660mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X700-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X700-40 replacement — usually within 7-8 hours.