This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X160-20, 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 SIJ125X160-20
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X160-20 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 SAIJ125X160-20, 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 → SAIJ125X160-20
- 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 SIJ125X160-20
The AirTAC SIJ125X160-20 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 20mm on-site, yielding a usable 140-160mm window from the 160mm nominal maximum. The direct replacement is the SAIJ125X160-20, matching the interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a -S magnet and cannot take a sensor. The stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-20 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X160-20 |
| 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 SAIJ125X160-20 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 SAIJ125X160-20 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 SIJ125X160-20
| 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 SIJ125X160-20 Is Used
Press Fit Tuning
Dial in the exact 140-160mm insertion depth for bearings on an assembly line, using the stop screw to compensate for material variances without reprogramming the machine.
Variable Height Sealing
Adjust the extend endpoint on a carton sealer to ensure consistent contact pressure across mixed product runs, trimming up to 20mm off the nominal 160mm stroke on-site.
Forming Stop Adjustment
Set a precise mechanical bottom-dead-center for a light metal forming operation, allowing operators to shift the 160mm extend endpoint by up to 20mm for different die setups.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-20 with the SAIJ125X160-20
To replace the discontinued SIJ125X160-20, specify the direct replacement SAIJ125X160-20, reusing your existing FA, LB, or TC ISO 15552 mounts. The 20mm adjust window is ideal for fine-tuning the 140-160mm extend endpoint without machining. This non-magnetic SKU cannot accept a sensor. For strokes at or over 300mm, verify side-load limits to prevent guide wear. Remember the stop screw only sets the end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X160-20
- ✓ 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 SIJ125X160-20 FAQ
Yes, the SIJ125X160-20 is discontinued. The direct replacement is the SAIJ125X160-20. It shares the identical ISO 15552 interface, 125mm bore, 160mm stroke, 20mm adjust window, G1/2 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 20mm on-site, giving a usable 140-160mm window. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X160-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X160-20 replacement — usually within 7-8 hours.