This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X700-75S, 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 SIJ125X700-75S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75S 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 SAIJ125X700-75S, 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 → SAIJ125X700-75S
- 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 SIJ125X700-75S
The AirTAC SIJ125X700-75S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 625-700 mm window from the 700 mm nominal maximum. The direct replacement is the SAIJ125X700-75S, sharing the same interface, force, and mounting.
The SAIJ upgrade uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix means a piston magnet is present for legacy CS1-B/DS1-B sensors. The stop screw sets end position only; it is not a load lock.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X700-75S |
| 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 SAIJ125X700-75S 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 SAIJ125X700-75S 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 SIJ125X700-75S
| 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 SIJ125X700-75S Is Used
Press Fit Tuning
Adjust the extend stop on-site to dial in exact 625-700 mm press depths for varying bearing housings without changing the cylinder.
Variable Length Diverter
Trim the actuation stroke by up to 75 mm to accommodate different package sizes on a sorting line, ensuring precise diverting force.
Adjustable Pallet Stop
Fine-tune the end position for mixed pallet heights in a palletizing cell, using the external screw to set the exact stopping point.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75S with the SAIJ125X700-75S
To replace the discontinued SIJ125X700-75S, order the direct replacement SAIJ125X700-75S. Select the 75 mm adjust window if you need to trim the 700 mm extend stroke down to 625 mm on-site; a smaller window saves length if you need less trim. Reuse your FA, LB, or TC ISO 15552 mounts. The -S magnet supports legacy CS1-B/DS1-B switches. For this 700 mm stroke, use external guides to prevent rod bending and manage side loads. For load holding on air loss, use an external rod lock or SAIL/BSAI variant, as the stop is not a lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X700-75S
- ✓ 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 SIJ125X700-75S FAQ
Yes, the SIJ125X700-75S is discontinued. The direct replacement is the SAIJ125X700-75S. It shares the same ISO 15552 interface, 125 mm bore, 700 mm stroke, 75 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 75 mm adjust window, allowing you to trim the 700 mm extend stroke down to 625 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X700-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X700-75S replacement — usually within 7-8 hours.