This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X100-30S, 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 SIJ125X100-30S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30S 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 SAIJ125X100-30S, 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 → SAIJ125X100-30S
- 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 SIJ125X100-30S
The AirTAC SIJ125X100-30S 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 30 mm on-site, giving a usable 70-100 mm range from the 100 mm nominal maximum. This direct replacement is the SAIJ125X100-30S, matching the interface, bore, stroke, force, and mounting.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. 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 SIJ125X100-30S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X100-30S |
| 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 SAIJ125X100-30S 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 SAIJ125X100-30S 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 SIJ125X100-30S
| 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 SIJ125X100-30S Is Used
Press Fit Tuning
Allows operators to dial in the exact 70-100 mm extend position for seating bearings without machining custom fixed stops.
Variable Length Diverter
Adjusts the extend stroke on-site to deflect varying package sizes on a sorting line within the 30 mm trim window.
Adjustable End Stop Pusher
Sets precise mechanical push-off distances for palletizing fixtures, accommodating mixed pallet dimensions.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30S with the SAIJ125X100-30S
To replace the discontinued SIJ125X100-30S, order the direct replacement SAIJ125X100-30S. For sizing both ways: the 100 mm bore pushes 3927 N @0.5 MPa, and the 160 mm bore pushes 10053 N @0.5 MPa. Choose the 30 mm adjust window if you need field tuning between 70 and 100 mm. Mounting interfaces (Basic, FA, LB, TC) reuse existing ISO 15552 fixtures. The -S magnet supports legacy CS1-B/DS1-B sensors. For strokes >=300 mm, verify side-load guide tolerance. The stop screw sets end position but does not lock; for load holding on air loss, use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X100-30S
- ✓ 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 SIJ125X100-30S FAQ
Yes, the SIJ125X100-30S is discontinued. The direct replacement is the SAIJ125X100-30S. It shares the same ISO 15552 interface, 125 mm bore, 100 mm stroke, 30 mm adjust window, G1/2 port, and mounting options, but features an upgraded two Y-shaped one-way piston seal.
The external stop screw provides a 30 mm adjust window, allowing the extend stroke to be shortened from the 100 mm nominal maximum down to 70 mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X100-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X100-30S replacement — usually within 7-8 hours.