This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X160-40, 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 SIJ125X160-40
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40 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 SAIJ125X160-40, 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 → SAIJ125X160-40
- 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 SIJ125X160-40
The AirTAC SIJ125X160-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. The direct replacement is the SAIJ125X160-40, retaining the 125mm bore, 160mm nominal stroke, G1/2 port, and 32mm rod. An external stop screw lets you trim the extend stroke by up to 40mm on-site, yielding a usable 120-160mm extension. The stop sets the end position and is not a load lock; use an external rod lock or SAIL for held loads.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This non-magnetic SKU cannot take a switch.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X160-40 |
| 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 SAIJ125X160-40 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 SAIJ125X160-40 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 SIJ125X160-40
| 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 SIJ125X160-40 Is Used
Press Fit Tuning
Field-trim the 40mm extend window to set precise bearing insertion depth without machining spacer rods on the production line.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40 with the SAIJ125X160-40
To replace the discontinued SIJ125X160-40, order the direct replacement SAIJ125X160-40, reusing your ISO 15552 FA, LB, or TC mounts. The 40mm adjust window is ideal for field-tuning the 120-160mm extend without machining. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. For strokes >=300mm, verify side-load guide tolerance. The stop screw sets end position only; it does not lock. For load holding on air loss, specify a SAIL or BSAI lock variant or an external pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X160-40
- ✓ 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 SIJ125X160-40 FAQ
Yes, the SIJ125X160-40 is discontinued. The direct replacement is the SAIJ125X160-40. It shares the identical ISO 15552 interface, 125mm bore, 160mm stroke, 40mm adjust window, G1/2 port, and 32mm rod. The SAIJ adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
The external stop screw provides a 40mm adjust window, allowing the extend stroke to be shortened from 160mm down to 120mm on-site. This stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X160-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X160-40 replacement — usually within 7-8 hours.