This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X880SH, 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 SI125X880SH
The AirTAC SI125 Standard Cylinder SI125X880SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 880mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X880SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke880 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X880SH
- 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 SI125X880SH
The AirTAC SI125X880SH is a discontinued double-acting ISO 15552 profile cylinder with a 125mm bore and 880mm stroke. It delivers 6136N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI125X880SH, matching the exact ISO 15552 mounting interface, stroke, force, and accessories.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This -SH model includes a high-temp Viton H seal (0-150C) and a piston magnet for CS1-B/DS1-B sensors.
Airtac SI125 Standard Cylinder SI125X880SH Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X880SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X880SH |
| Bore size | Ø125 mm |
| Stroke | 880 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 SAI125X880SH 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 SAI125X880SH 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 SI125X880SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×880 | 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 SI125X880SH Is Used
Heavy Stamping
Drives large press dies and heavy-duty stamping fixtures requiring 6136N push force at 0.5MPa.
Pallet Handling
Indexes loaded pallets along conveyors, utilizing the 880mm stroke for wide transfer distances.
Automated Clamping
Secures large fabricated components during machining, relying on the 125mm bore's robust thrust.
Replacing the Airtac SI125 Standard Cylinder SI125X880SH with the SAI125X880SH
To replace the SI125X880SH, order the SAI125X880SH. Verify the ISO 15552 mounting fixture, G1/2 port, M27x2 rod thread, and the magnet (-S) for current AirTAC switches. The 880mm stroke requires external guides to prevent rod bending under side loads. Neighbouring bores: 100mm yields 3927N push at 0.5MPa, while 160mm yields 10053N. For load holding on air loss, the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X880SH
- ✓ 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 SI125X880SH FAQ
Yes, the SI125X880SH is discontinued. The direct replacement is the SAI125X880SH. It is dimensionally interchangeable per ISO 15552, retaining the same 125mm bore, 880mm stroke, G1/2 port, and mounting interface.
The G1/2 port bore delivers 6136N push and 5734N pull at 0.5MPa, 8590N push at 0.7MPa, 11045N at 0.9MPa, and a max force of 1251 kgf at 1.0MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X880SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X880SH replacement — usually within 7-8 hours.