This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X200SH, 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 SI125 Standard Cylinder SI125X200SH
The AirTAC SI125 Standard Cylinder SI125X200SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X200SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X200SH
- 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 SI125 Standard Cylinder SI125X200SH
The AirTAC SI125X200SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 125mm bore, 200mm stroke, and a G1/2 port. Generating 6136N push force at 0.5MPa, it is replaced by the SAI125X200SH direct equivalent.
The SAI replacement shares the exact ISO 15552 mounting interface, bore, force, and port, but upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure. This -S/-H variant includes a magnet for CS1-B/DS1-B sensors and Viton H seals rated for 0-150C.
Airtac SI125 Standard Cylinder SI125X200SH Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X200SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X200SH |
| Bore size | Ø125 mm |
| Stroke | 200 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 SAI125X200SH 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 SAI125X200SH produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI125 Standard Cylinder SI125X200SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SI125 Standard Cylinder SI125X200SH Is Used
Heavy Pressing
Drives large stamping or forming presses requiring 6136N thrust at 0.5MPa with stable 200mm displacement.
High-Temp Handling
Manages material transfer in hot zones up to 150C using the Viton H seal option for reliable actuation.
Replacing the Airtac SI125 Standard Cylinder SI125X200SH with the SAI125X200SH
To replace the SI125X200SH, order the SAI125X200SH direct. Confirm the ISO 15552 interface, 125mm bore, 200mm stroke, G1/2 port, and mounting accessory match your fixture. The -S magnet enables CS1-B/DS1-B sensors, while the -H Viton seal handles 0-150C heat. If sizing up or down, neighbor bores are 100mm (3927N push @0.5) and 160mm (10053N push @0.5). Note that a plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF valve variant for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X200SH
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI125 Standard Cylinder SI125X200SH FAQ
Yes, the SI125X200SH is discontinued. The direct replacement is the SAI125X200SH, which shares the identical ISO 15552 mounting interface, 125mm bore, 200mm stroke, force, and G1/2 port.
It features a G1/2 port and M27x2 rod thread. Force ratings are 6136N push and 5734N pull at 0.5MPa, 8590N push at 0.7MPa, 11045N push at 0.9MPa, and a theoretical max of 1251kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X200SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X200SH replacement — usually within 7-8 hours.