This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X100-100S, 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 SIJ125X100-100S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100S 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 SAIJ125X100-100S, 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 → SAIJ125X100-100S
- 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 SIJ125X100-100S
The AirTAC SIJ125X100-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder featuring a built-in piston magnet. An external stop screw allows you to trim the extend stroke by up to 100 mm on-site, meaning the nominal 100 mm stroke serves as the maximum extend length. The direct replacement is the SAIJ125X100-100S, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting dimensions for direct hardware reuse but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X100-100S |
| 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 SAIJ125X100-100S 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 SAIJ125X100-100S 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 SIJ125X100-100S
| 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 SIJ125X100-100S Is Used
Press Fit Tuning
Allows operators to fine-tune the extend position on-site for pressing bearings without swapping cylinders.
Variable Diverter Gate
Adjusts the extend stop length to accommodate different package sizes on a sorting line.
Pallet Positioning
Sets precise end positions for pallet stops where the required extension varies by load height.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-100S with the SAIJ125X100-100S
To replace the discontinued SIJ125X100-100S, order the direct replacement SAIJ125X100-100S, which preserves the G1/2 port, M27x2 rod thread, and 40 mm adjustable cushions. Choose the 100 mm adjust window when you need maximum on-site flexibility to trim the extend stroke from 100 mm down to 0 mm. Mounting options include FA, LB, and TC brackets. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X100-100S
- ✓ 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 SIJ125X100-100S FAQ
Yes, the SIJ125X100-100S is discontinued. The direct replacement is the SAIJ125X100-100S. It shares the same ISO 15552 interface, 125 mm bore, 100 mm stroke, 100 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The theoretical max is 1251 kgf at 1.0 MPa. The external stop screw provides a 100 mm adjust window to shorten the extend stroke on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X100-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X100-100S replacement — usually within 7-8 hours.