This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X1000-100S, 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 SIJ125X1000-100S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 1000mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X1000-100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X1000-100S
- 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 SIJ125X1000-100S
The AirTAC SIJ125X1000-100S 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 900-1000 mm range from the 1000 mm nominal maximum. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches.
The direct replacement is the SAIJ125X1000-100S, preserving the interface, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-100S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X1000-100S |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAIJ125X1000-100S 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 SAIJ125X1000-100S 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 SIJ125X1000-100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SIJ125X1000-100S Is Used
Press Tonnage Calibration
Needs field stroke tuning to set precise lower-die contact points across varying material thicknesses without re-mounting the actuator.
Variable-Length Diverter
Requires on-site extend adjustment up to 100 mm to deflect different package sizes accurately onto specific sorting lanes.
Adjustable Pallet Stopper
Demands a flexible end-position stop to accommodate various pallet depths on a packaging line, trimming the extend stroke as needed.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-100S with the SAIJ125X1000-100S
To replace the discontinued SIJ125X1000-100S, specify SAIJ125X1000-100S directly—it is a direct match for the ISO 15552 dimensions, G1/2 port, and 100 mm adjust window. Select the 100 mm adjust window if your extend stroke needs on-site tuning between 900 and 1000 mm. Mounting choices include Basic, FA, LB, and TC. The -S magnet supports legacy CS1-B/DS1-B switches. Because the stroke is 1000 mm, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X1000-100S
- ✓ 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 SIJ125X1000-100S FAQ
Yes, the SIJ125X1000-100S is discontinued. The direct replacement is the SAIJ125X1000-100S, which shares the same ISO 15552 interface, 125 mm bore, 1000 mm stroke, 100 mm adjust window, and G1/2 port. The SAIJ family also features an upgraded piston seal and adds lock variants like SAIL and BSAI.
This 125 mm bore cylinder has a 100 mm external stop screw window, allowing the extend stroke to be shortened from 1000 mm down to 900 mm. It operates at 30-500 mm/s and uses a G1/2 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X1000-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X1000-100S replacement — usually within 7-8 hours.