This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X1000-30S, 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 SIJ125X1000-30S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-30S 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 SAIJ125X1000-30S, 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 → SAIJ125X1000-30S
- 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 SIJ125X1000-30S
The AirTAC SIJ125X1000-30S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore, G1/2 port, and 1000 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 970-1000 mm forward travel. This stop sets the end position; it is not a load lock. The direct replacement is the SAIJ125X1000-30S, retaining the same interface, force, and mounting.
The SAIJ successor adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. For a 1000 mm stroke, use external guides to prevent rod bending and side-load wear.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-30S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X1000-30S |
| 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 SAIJ125X1000-30S 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 SAIJ125X1000-30S 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 SIJ125X1000-30S
| 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 SIJ125X1000-30S Is Used
Press Fit Tuning
Allows operators to fine-tune the 970-1000 mm extend stroke on-site by up to 30 mm to set precise pressing depth without changing the cylinder.
Variable Transfer Stop
Adjusts the end position for product routing, accommodating different package lengths on a 125 mm bore line without re-mounting hardware.
Pallet Positioning
Trims the extend stroke to align pallets precisely, using the external stop screw to dial in the exact 1000 mm end point for packing operations.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-30S with the SAIJ125X1000-30S
To replace the discontinued SIJ125X1000-30S, order the direct replacement SAIJ125X1000-30S, keeping the 30 mm adjust window (970-1000 mm usable extend) and -S magnet for CS1-B/DS1-B switches. Reuse your FA, LB, or TC ISO 15552 mounts. Because the 1000 mm stroke exceeds 300 mm, ensure external guides to absorb side loads and prevent rod bending. The stop screw only sets end position; for load holding on air loss, specify an external rod lock or the SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X1000-30S
- ✓ 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 SIJ125X1000-30S FAQ
Yes, the SIJ125X1000-30S is discontinued. The direct replacement is the SAIJ125X1000-30S. It shares the same ISO 15552 interface, 125 mm bore, 1000 mm stroke, 30 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw allows trimming the extend stroke by up to 30 mm on-site (usable 970-1000 mm). The stop sets position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X1000-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X1000-30S replacement — usually within 7-8 hours.