This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X175-100, 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 SIJ125X175-100
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X175-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X175-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X175-100
- 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 SIJ125X175-100
The AirTAC SIJ125X175-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable 75-175 mm range from the 175 mm nominal maximum. The stop sets the end position but is not a load lock.
The direct replacement is the SAIJ125X175-100, retaining the same ISO 15552 interface, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X175-100 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X175-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X175-100 |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAIJ125X175-100 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 SAIJ125X175-100 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 SIJ125X175-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SIJ125X175-100 Is Used
Press Fit Tuning
Field-trim the 75-175 mm extend stroke by up to 100 mm to set precise bearing press depth without machining custom spacers.
Variable Diverter Stroke
Adjust the extend stop on-site to alter the diverter arm reach for different package widths on a sorting line.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X175-100 with the SAIJ125X175-100
To replace the discontinued SIJ125X175-100, order the direct replacement SAIJ125X175-100, ensuring you reuse your existing FA, LB, or TC ISO 15552 mounting hardware. The 100 mm adjust window is ideal for field tuning the extend stroke (75-175 mm usable) without machining external stops. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors; confirm if position feedback is required. For strokes of 300 mm or longer, verify side-load guidance to prevent rod binding. Remember the adjust screw sets end position, not a lock; for load holding on air loss, specify an external rod lock or the SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X175-100
- ✓ 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 SIJ125X175-100 FAQ
Yes, the SIJ125X175-100 is discontinued. The direct replacement is the SAIJ125X175-100. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 100 mm adjust window, allowing you to trim the extend stroke on-site from the 175 mm nominal maximum down to 75 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X175-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X175-100 replacement — usually within 7-8 hours.