This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X160-50, 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 SIJ125X160-50
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X160-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 160mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X160-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X160-50
- 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 SIJ125X160-50
The AirTAC SIJ125X160-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 160 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 110-160 mm extension window. The direct replacement is the SAIJ125X160-50, matching the interface, force, and mounting.
The SAIJ upgrade utilizes an improved two-piece Y-shaped 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 use an external rod lock or SAIL/BSAI variant.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-50 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X160-50 |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125X160-50 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 SAIJ125X160-50 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 SIJ125X160-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SIJ125X160-50 Is Used
Press Fit Tuning
Adjusts the extend stroke by up to 50 mm on-site to set precise pressing depths for varying bearing sizes without swapping cylinders.
Variable Transfer Stops
Regulates the extend position of pneumatic stops on a conveyor line to accommodate different package lengths on the fly.
Adjustable Diverters
Fine-tunes the actuation reach of sorting diverters by trimming the stroke window, ensuring gentle contact with fragile goods.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-50 with the SAIJ125X160-50
To replace the discontinued SIJ125X160-50, order the direct replacement SAIJ125X160-50, reusing your existing FA, LB, or TC ISO 15552 mounts. This SKU lacks a -S magnet and cannot accept a magnetic switch. For strokes of 300 mm or longer, verify side-load guidance to prevent rod wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X160-50
- ✓ 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 SIJ125X160-50 FAQ
Yes, the SIJ125X160-50 is discontinued. The direct replacement is the SAIJ125X160-50, which shares the same ISO 15552 interface, 125 mm bore, 160 mm stroke, 50 mm adjust window, G1/2 port, and mounting options.
The double-acting double-rod cylinder has a 50 mm adjust window (usable extend stroke 110-160 mm). Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X160-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X160-50 replacement — usually within 7-8 hours.