This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X60-50S, 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 SIJ125X60-50S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X60-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X60-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X60-50S
- 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 SIJ125X60-50S
The AirTAC SIJ125X60-50S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and superseded by the direct replacement SAIJ125X60-50S. It uses an external stop screw to trim the extend stroke by up to 50mm on-site, meaning the nominal 60mm stroke can be precisely shortened down to a 10mm extend. The SAIJ successor retains the exact G1/2 port, M27x2 rod thread, and 125mm bore, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The stop screw sets the end position but is not a load lock; for held loads, consider the SAIL or BSAI lock variants. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-50S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X60-50S |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAIJ125X60-50S 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 SAIJ125X60-50S 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 SIJ125X60-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SIJ125X60-50S Is Used
Press Fit Tuning
Allows operators to fine-tune the extend stroke on-site during press-fit assembly, dialing in the exact 10 to 60mm insertion depth without swapping cylinders.
Variable Carton Flap Folding
Accommodates changing carton sizes on a packaging line by adjusting the extend stop within the 50mm window, ensuring precise flap folding force.
Adjustable Product Push-Off
Provides a customizable push-off distance for varying product lengths on a conveyor, trimming the stroke down from the 60mm maximum as needed.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-50S with the SAIJ125X60-50S
To replace the discontinued SIJ125X60-50S, order the SAIJ125X60-50S, which matches the 125mm bore, 60mm stroke, 50mm adjust window, G1/2 port, and ISO 15552 mounting interface. The 50mm adjust window allows the 60mm extend to be reduced to 10mm on-site. Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for position sensing. Because the stroke is under 300mm, side-load wear is less critical than on longer units, but proper guide alignment is still required. Note that the stop screw sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X60-50S
- ✓ 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 SIJ125X60-50S FAQ
Yes, the SIJ125X60-50S is discontinued. The direct replacement is the SAIJ125X60-50S. It shares the same ISO 15552 interface, 125mm bore, 60mm stroke, 50mm adjust window, G1/2 port, and mounting options, but features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw allows trimming the 60mm extend stroke by up to 50mm on-site (down to a 10mm stroke). The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X60-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X60-50S replacement — usually within 7-8 hours.