This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X100-100, 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 SIJ125X100-100
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X100-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X100-100
- 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 SIJ125X100-100
The AirTAC SIJ125X100-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and a 100 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, setting the exact end position without machining. The direct replacement is the SAIJ125X100-100, matching the G1/2 port, 32 mm rod, and mounting interface.
The SAIJ successor retains the ISO 15552 dimensions and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note this SKU has no -S magnet and cannot take a sensor; the stop screw sets position but is not a load lock, so use an external rod lock for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X100-100 |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125X100-100 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 SAIJ125X100-100 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 SIJ125X100-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SIJ125X100-100 Is Used
Press Fit Depth Tuning
Dial in precise bearing seating depth on-site by trimming the extend stroke up to 100 mm, avoiding hard mechanical stops and ensuring consistent press force across varying material thicknesses.
Variable Length Diverter
Adjust the actuator reach on a sorting line to handle changing package dimensions, using the external stop screw to set the exact extend position for each product run without re-plumbing.
Adjustable End Stops
Set precise end-of-stroke positions for palletizing or lifting fixtures where the target contact point varies, allowing operators to fine-tune the 100 mm extend window on the factory floor.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100 with the SAIJ125X100-100
To replace the discontinued SIJ125X100-100, order the direct replacement SAIJ125X100-100, keeping the same ISO 15552 interface, 100 mm nominal stroke, and 100 mm adjust window. Reuse your FA, LB, or TC mounts. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. For strokes at or above 300 mm, verify side-load limits to prevent guide wear. Remember the external stop trims extend travel but provides no load-holding on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X100-100
- ✓ 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 SIJ125X100-100 FAQ
Yes, the SIJ125X100-100 is discontinued. The direct replacement is the SAIJ125X100-100. It matches the 125 mm bore, 100 mm stroke, 100 mm adjust window, G1/2 port, and ISO 15552 mounting interface, while adding an upgraded piston seal.
The external stop screw allows trimming the extend stroke by up to 100 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X100-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X100-100 replacement — usually within 7-8 hours.