This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X1000-75S, 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 SIJ125X1000-75S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75S 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 SAIJ125X1000-75S, 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 → SAIJ125X1000-75S
- 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 SIJ125X1000-75S
The AirTAC SIJ125X1000-75S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 925-1000 mm stroke from the 1000 mm nominal maximum.
The direct replacement is the SAIJ125X1000-75S, matching the interface, force, adjust window, and mountings. 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 SIJ125X1000-75S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X1000-75S |
| 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 SAIJ125X1000-75S 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 SAIJ125X1000-75S 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 SIJ125X1000-75S
| 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 SIJ125X1000-75S Is Used
Press Tooling Setup
Allows operators to fine-tune the extend stroke on-site by up to 75 mm to accommodate varying material thicknesses without changing the entire cylinder.
Variable Length Diverter
Adjusts the extension distance of a sorting arm on the fly to handle different package sizes on a packaging line.
Adjustable Stop Positioning
Sets a precise mechanical end position for pallets or workpieces, enabling quick reconfiguration of the 925-1000 mm stroke window for different pallet depths.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X1000-75S with the SAIJ125X1000-75S
To replace the discontinued SIJ125X1000-75S, order the SAIJ125X1000-75S direct. It preserves the 125 mm bore, 1000 mm max stroke, 75 mm adjust window, G1/2 port, and ISO 15552 mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2). Choose the 75 mm adjust window if your application requires field-tuning the extend stroke down to 925 mm. The -S suffix provides a piston magnet for position sensing. Because the stroke is 1000 mm, ensure external guides support side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X1000-75S
- ✓ 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 SIJ125X1000-75S FAQ
Yes, the SIJ125X1000-75S is discontinued. The direct replacement is the SAIJ125X1000-75S, which shares the same ISO 15552 interface, 125 mm bore, 1000 mm stroke, 75 mm adjust window, and G1/2 port. The SAIJ upgrade features a two Y-shaped one-way piston seal for longer life and lower start-up pressure.
The external stop screw provides a 75 mm adjust window, allowing you to shorten the extend stroke from 1000 mm down to 925 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X1000-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X1000-75S replacement — usually within 7-8 hours.