This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X600-75S, 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 SIJ125X600-75S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X600-75S 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 SAIJ125X600-75S, 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 → SAIJ125X600-75S
- 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 SIJ125X600-75S
The AirTAC SIJ125X600-75S 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 75 mm on-site, giving a usable 525-600 mm window from the 600 mm nominal maximum. The direct replacement is the SAIJ125X600-75S, sharing the same interface, force, and mounting.
The SAIJ successor retains the specifications but adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B sensors. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-75S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X600-75S |
| 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 SAIJ125X600-75S 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 SAIJ125X600-75S 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 SIJ125X600-75S
| 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 SIJ125X600-75S Is Used
Press Stroke Tuning
Light assembly presses needing precise end-positioning across varied material thicknesses benefit from the 75 mm on-site extend trim without changing the cylinder body.
Variable Length Diverter
Package routing arms on conveyors can adjust the extend stroke by up to 75 mm on-site to accommodate changing box sizes while maintaining the 600 mm maximum reach.
Adjustable Stops
Palletizing end-effectors use the external stop screw to set exact 525-600 mm extension limits for different pallet depths, avoiding full retraction recalibration.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-75S with the SAIJ125X600-75S
To replace the discontinued SIJ125X600-75S, order the direct replacement SAIJ125X600-75S, matching the 125 mm bore, 600 mm stroke, 75 mm adjust window, and G1/2 port. Choose the 75 mm adjust window if your extend stroke needs field tuning between 525-600 mm. Mounting options include Basic, FA, LB, and TC using genuine ISO 15552 interface dimensions. The -S magnet supports legacy CS1-B/DS1-B switches. Because the 600 mm stroke is long, account for side-load and rod-bending by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X600-75S
- ✓ 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 SIJ125X600-75S FAQ
Yes, the SIJ125X600-75S is discontinued. The direct replacement is the SAIJ125X600-75S. It shares the same ISO 15552 interface, 125 mm bore, 600 mm stroke, 75 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 75 mm adjust window, allowing you to trim the extend stroke on-site from the 600 mm maximum down to 525 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X600-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X600-75S replacement — usually within 7-8 hours.