This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X600-100S, 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 SIJ125X600-100S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100S 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 SAIJ125X600-100S, 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 → SAIJ125X600-100S
- 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 SIJ125X600-100S
The AirTAC SIJ125X600-100S 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 100 mm on-site, yielding a usable 500-600 mm stroke from the 600 mm nominal maximum. The direct replacement is the SAIJ125X600-100S, matching the interface, force, and mounting.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; use SAIL or BSAI for held loads. The -S magnet suits legacy CS1-B/DS1-B switches.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X600-100S |
| 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 SAIJ125X600-100S 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 SAIJ125X600-100S 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 SIJ125X600-100S
| 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 SIJ125X600-100S Is Used
Variable Press Stroke
Trimming the extend stroke by up to 100 mm on-site allows precise positioning of large pressing heads without machining custom spacers.
Adjustable Diverter Arm
Field-tuning the 500-600 mm reach accommodates varying package widths on a heavy-duty sorting line before locking the end position.
Heavy Pallet Stops
Dialing in the stop screw distance lets operators adapt pallet halting points on the fly for mixed SKU heights without swapping cylinders.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100S with the SAIJ125X600-100S
To replace the discontinued SIJ125X600-100S, order the exact direct replacement SAIJ125X600-100S. Choose the 100 mm adjust window if you need the full 500-600 mm extend trim. Mounting options include Basic, FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors. Because the 600 mm stroke is long, account for side-load and rod-bending forces using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X600-100S
- ✓ 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 SIJ125X600-100S FAQ
Yes, the SIJ125X600-100S is discontinued. The direct replacement is the SAIJ125X600-100S. It shares the same ISO 15552 interface, 125 mm bore, 600 mm stroke, 100 mm adjust window, G1/2 port, and mounting options, but adds an upgraded two Y-shaped one-way piston seal.
The external stop screw allows trimming the extend stroke by up to 100 mm on-site, giving a usable 500-600 mm stroke. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X600-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X600-100S replacement — usually within 7-8 hours.