This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X35-10S, 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 SIJ125X35-10S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X35-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 35mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X35-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X35-10S
- 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 SIJ125X35-10S
The AirTAC SIJ125X35-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 35 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 25-35 mm window. The direct replacement is the SAIJ125X35-10S, sharing the same interface, force, and mounting.
The SAIJ upgrade introduces an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. The external stop sets end position but is not a load lock; for held loads use SAIL/BSAI or an external rod lock.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X35-10S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X35-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X35-10S |
| Bore size | Ø125 mm |
| Stroke | 35 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 SAIJ125X35-10S 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 SAIJ125X35-10S 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 SIJ125X35-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×35 | 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 SIJ125X35-10S Is Used
Press Fit Tuning
Allows operators to fine-tune the 25-35 mm extend stroke on-site by up to 10 mm to achieve the exact insertion depth for delicate bearing press fits without changing cylinder bodies.
End-Stop Calibration
Ideal for assembly stations needing field stroke tuning to compensate for mechanical wear or product size changes, setting the exact extend endpoint within the 10 mm adjustment window.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X35-10S with the SAIJ125X35-10S
To replace the discontinued SIJ125X35-10S, order the direct replacement SAIJ125X35-10S, matching the 125 mm bore, 35 mm nominal stroke, 10 mm adjust window, and -S magnet. Choose the 10 mm adjust window if your application requires field-tuning the extend stroke within a 25-35 mm range. Mounting options include FA, LB, and TC brackets. Because the stroke is under 300 mm, side-load rod deflection is minimal. Note that the stop screw sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X35-10S
- ✓ 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 SIJ125X35-10S FAQ
Yes, the AirTAC SIJ125X35-10S is discontinued. The direct replacement is the SAIJ125X35-10S, which shares the same ISO 15552 interface, 125 mm bore, 35 mm stroke, 10 mm adjust window, G1/2 port, and mounting options.
The external stop screw allows you to trim the extend stroke by up to 10 mm on-site, giving a usable 25-35 mm stroke window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X35-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X35-10S replacement — usually within 7-8 hours.