This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X600-30, 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 SIJ125X600-30
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X600-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 600mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X600-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X600-30
- 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 SIJ125X600-30
The AirTAC SIJ125X600-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable 570-600mm range, though this stop sets end position and is not a load lock.
The direct replacement is the SAIJ125X600-30, matching the bore, stroke, force, and mounting. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-30 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X600-30 |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAIJ125X600-30 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 SAIJ125X600-30 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 SIJ125X600-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SIJ125X600-30 Is Used
Press Fit Tuning
Allows operators to dial in the exact 570-600mm extend position for inserting bearings without remounting the cylinder.
Variable Stop Positioning
Adjusts the extend stop on the fly to handle mixed product lengths on a single transfer line.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-30 with the SAIJ125X600-30
To replace this discontinued unit, order the SAIJ125X600-30, which matches the 600mm stroke, 30mm adjust window, and ISO 15552 mounting interface. Choose the 30mm adjust window if you need precise 570-600mm extend tuning. Reuse FA, LB, or TC mounts. Because this SKU lacks a -S magnet, it cannot take a magnetic switch. For the 600mm stroke, use external guides to prevent rod bending and side-load damage. The stop screw only sets end position; for load holding on air loss, use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X600-30
- ✓ 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 SIJ125X600-30 FAQ
Yes, the SIJ125X600-30 is discontinued. The direct replacement is the SAIJ125X600-30, matching the 125mm bore, 600mm stroke, 30mm adjust window, G1/2 port, and ISO 15552 mounting.
The external stop screw provides a 30mm adjust window, shortening the extend stroke from 600mm down to 570mm.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X600-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X600-30 replacement — usually within 7-8 hours.