This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X800-75S, 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 SIJ125X800-75S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X800-75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X800-75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X800-75S
- 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 SIJ125X800-75S
The AirTAC SIJ125X800-75S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 725-800 mm stroke from the 800 mm nominal maximum. The direct replacement is the SAIJ125X800-75S, retaining the same ISO 15552 mounting interface, force, and adjust window.
The SAIJ successor upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Because the stop screw only sets the end position, it is not a load lock; use an external rod lock or check valve for holding. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X800-75S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X800-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X800-75S |
| Bore size | Ø125 mm |
| Stroke | 800 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 SAIJ125X800-75S 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 SAIJ125X800-75S 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 SIJ125X800-75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SIJ125X800-75S Is Used
Press Tonnage Calibration
Requires field stroke tuning to dial in the exact 725-800 mm extend position for varying material thicknesses during light-duty press operations.
Package Divert Positioning
Needs adjustable end stops to alter the extend length on-site for different carton sizes without changing the entire cylinder assembly.
Palletizing End Stops
Demands precise extend stroke trimming to accommodate varying pallet heights, utilizing the 75 mm external stop screw window for on-site adjustments.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X800-75S with the SAIJ125X800-75S
To replace the discontinued SIJ125X800-75S, order the direct replacement SAIJ125X800-75S, which preserves the 125 mm bore, 800 mm max stroke, 75 mm adjust window, G1/2 port, and ISO 15552 mounting. When choosing the adjust window, confirm the 75 mm trim provides the exact 725-800 mm extend range needed. Mounting options include Basic, FA, LB, and TC brackets. The -S magnet supports position sensing. Because the stroke is 800 mm, ensure external guides are used to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X800-75S
- ✓ 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 SIJ125X800-75S FAQ
Yes, the SIJ125X800-75S is discontinued. The direct replacement is the SAIJ125X800-75S. It shares the same ISO 15552 interface, 125 mm bore, 800 mm stroke, 75 mm adjust window, and G1/2 port, but features an upgraded piston seal.
The external stop screw allows you to trim the extend stroke by up to 75 mm on-site, giving a usable range of 725-800 mm.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X800-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X800-75S replacement — usually within 7-8 hours.