This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X600-100SH, 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 SIJ125X600-100SH
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100SH 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 SAIJ125X600-100SH, 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 → SAIJ125X600-100SH
- 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 SIJ125X600-100SH
The AirTAC SIJ125X600-100SH is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now DISCONTINUED. The direct replacement is the SAIJ125X600-100SH, matching the 125mm bore, 600mm nominal stroke, G1/2 port, and M27x2 rod thread. An external stop screw lets you trim the extend stroke by up to 100mm on-site, yielding a usable 500-600mm extend distance. The stop sets the end position and is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads. This -H variant specifies Viton/FKM seals for 0-150C high-temp environments.
The SAIJ upgrade features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The -S magnet enables legacy CS1-B/DS1-B sensors. With a 600mm stroke, external guides are recommended to prevent rod bending.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100SH Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X600-100SH |
| 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 SAIJ125X600-100SH 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 SAIJ125X600-100SH 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 SIJ125X600-100SH
| 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 SIJ125X600-100SH Is Used
Pallet Positioning Stops
Handles large pallets by tuning the extend stroke on-site from 600mm down to 500mm to accommodate varying load widths while using the G1/2 port for high airflow.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X600-100SH with the SAIJ125X600-100SH
To replace the discontinued SIJ125X600-100SH, order the direct replacement SAIJ125X600-100SH, reusing your existing ISO 15552 FA, LB, or TC mounts. The 100mm adjust window lets you tune the extend stroke down to 500mm on-site. The -S suffix confirms a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ uses current AirTAC switches. Because the 600mm stroke exceeds 300mm, ensure external guides support the side-load to avoid rod bending. Remember the stop screw sets end position, not a lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X600-100SH
- ✓ 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 SIJ125X600-100SH FAQ
Yes, the SIJ125X600-100SH is discontinued. The direct replacement is the SAIJ125X600-100SH, offering the same ISO 15552 interface, 125mm bore, 600mm stroke, 100mm adjust window, and G1/2 port. The SAIJ family also adds an upgraded piston seal and SAIL/BSAI lock variants.
The external stop screw allows you to trim the extend stroke by up to 100mm on-site, yielding a usable 500-600mm stroke. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X600-100SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X600-100SH replacement — usually within 7-8 hours.