This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X180-10S, 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 SIJ125X180-10S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X180-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X180-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X180-10S
- 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 SIJ125X180-10S
The AirTAC SIJ125X180-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 180 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 170-180 mm stroke window. The stop sets the end position; it is not a load lock. The direct replacement is the SAIJ125X180-10S, matching the interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X180-10S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X180-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X180-10S |
| Bore size | Ø125 mm |
| Stroke | 180 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 SAIJ125X180-10S 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 SAIJ125X180-10S 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 SIJ125X180-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×180 | 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 SIJ125X180-10S Is Used
Press Fit Tuning
Final insertion of heavy bearings where a 10 mm external stop trims the extend stroke on-site to dial in exact pressing depth without re-mounting.
Pallet Stop Positioning
Halting large pallets on a line, using the adjustable stop screw to fine-tune the 170-180 mm extend position for varying product widths.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X180-10S with the SAIJ125X180-10S
To replace the discontinued SIJ125X180-10S, order the direct replacement SAIJ125X180-10S, keeping the 180 mm maximum stroke, 10 mm adjust window, G1/2 port, and -S magnet. Choose the 10 mm adjust window for fine end-position tuning. Mounting options include Basic, FA, LB, and TC. For strokes of 300 mm or longer, verify side-load limits. The external stop sets end position but is not a lock; for load holding without live air, use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X180-10S
- ✓ 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 SIJ125X180-10S FAQ
Yes, the SIJ125X180-10S is discontinued. The direct replacement is the SAIJ125X180-10S, which shares the identical ISO 15552 interface, 125 mm bore, 180 mm stroke, 10 mm adjust window, G1/2 port, and mounting options. The SAIJ features an upgraded piston seal for longer life.
The external stop screw provides a 10 mm adjust window, allowing you to trim the 180 mm extend stroke down to 170 mm on-site. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X180-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X180-10S replacement — usually within 7-8 hours.