This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X80CA, 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 SI125X80CA
The AirTAC Airtac SI125 Standard Cylinder SI125X80CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X80CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X80CA
- 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 SI125X80CA
The AirTAC SI125X80CA is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke. Built with an extruded aluminum barrel, it delivers 6136 N push and 5734 N pull at 0.5 MPa, scaling to 11045 N at 0.9 MPa. The direct replacement is the SAI125X80CA, matching the 125 mm bore, stroke, G1/2 port, and CA clevis mounting interface for seamless fixture integration.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this specific SI125X80CA SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For load holding, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
Airtac SI125 Standard Cylinder SI125X80CA Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X80CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X80CA |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAI125X80CA 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 SAI125X80CA 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 SI125X80CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SI125X80CA Is Used
Heavy-Duty Pressing
Applies 8590 N of force at 0.7 MPa for seating bearings or clinching metal panels in automated fabrication lines.
Mold Ejection Systems
Ejects dense castings from molds, utilizing the 32 mm rod and M27x2 thread to drive heavy payloads reliably.
Replacing the Airtac SI125 Standard Cylinder SI125X80CA with the SAI125X80CA
To replace the SI125X80CA, order the SAI125X80CA. Verify the ISO 15552 CA clevis mount, 80 mm stroke, and G1/2 porting (PT/G/NPT threads). Because this SKU has no magnet, you cannot mount position sensors; order an SAI with the -S suffix if sensing is required. Sizing both ways: a 100 mm bore yields 3927 N push at 0.5 MPa, while a 160 mm bore yields 10053 N. With an 80 mm stroke, side-load risks are minimal, but ensure rigid guidance for heavy masses. For applications needing static holding on air loss, specify the SAIL air-released lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X80CA
- ✓ 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 SI125X80CA FAQ
Yes, the AirTAC SI125X80CA is discontinued. The direct replacement is the SAI125X80CA. It is dimensionally interchangeable per ISO 15552, retaining the same 125 mm bore, 80 mm stroke, output force, G1/2 port, and CA clevis mounting interface.
The G1/2 port feeds a 32 mm rod delivering 6136 N push and 5734 N pull at 0.5 MPa. At 0.7 MPa push is 8590 N, and 11045 N at 0.9 MPa. The theoretical max force is 1251 kgf at 1.0 MPa, with an operating speed of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X80CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X80CA replacement — usually within 7-8 hours.