This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X1000-75, 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 SIJ125X1000-75
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75 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 SAIJ125X1000-75, 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 → SAIJ125X1000-75
- 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 SIJ125X1000-75
The AirTAC SIJ125X1000-75 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 75 mm on-site, giving a usable 925-1000 mm stroke window from the 1000 mm nominal maximum. The direct replacement is the SAIJ125X1000-75, matching the interface, force, and mounting.
The stop screw sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads. The SAIJ upgrade uses a two Y-shaped one-way piston seal for lower start-up pressure. This SKU lacks a -S magnet and cannot take a switch.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X1000-75 |
| 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 SAIJ125X1000-75 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 SAIJ125X1000-75 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 SIJ125X1000-75
| 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 SIJ125X1000-75 Is Used
Press Stroke Tuning
Field-adjust the 75 mm extend window on a 125 mm bore press to accommodate varying material thicknesses without changing the entire cylinder setup.
Variable Length Diverter
Trim the actuation length on-site to deflect different package sizes on a conveyor line, ensuring precise routing without repositioning mounts.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75 with the SAIJ125X1000-75
To replace the discontinued SIJ125X1000-75, order the direct replacement SAIJ125X1000-75, keeping the 75 mm adjust window and ISO 15552 mounting. Choose the 75 mm adjust window if you need to trim the extend stroke on-site. Mounting options include FA, LB, and TC. Because the 1000 mm stroke is long, use external guides to prevent rod bending and side-load wear. This non-magnetic SKU cannot accept a sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X1000-75
- ✓ 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 SIJ125X1000-75 FAQ
Yes, the SIJ125X1000-75 is discontinued. The direct replacement is the SAIJ125X1000-75, which matches the ISO 15552 interface, 125 mm bore, 1000 mm stroke, 75 mm adjust window, G1/2 port, and mounting options. The SAIJ also features an upgraded two Y-shaped one-way piston seal.
The external stop screw window is 75 mm, allowing an extend stroke of 925-1000 mm. The stop sets end position and is not a load lock. It uses a G1/2 port and runs at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X1000-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X1000-75 replacement — usually within 7-8 hours.