This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI125X60TC, 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 SI125X60TC
The AirTAC SI125 Standard Cylinder SI125X60TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI125X60TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAI125X60TC
- 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 SI125X60TC
The AirTAC SI125X60TC is a discontinued double-acting ISO 15552 profile cylinder with a 125 mm bore and 60 mm stroke. It delivers 6136 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI125X60TC, which shares the exact TC trunnion mount, M27x2 rod thread, and output force.
Because this SKU lacks the -S magnet, it cannot accept position switches. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure.
Airtac SI125 Standard Cylinder SI125X60TC Technical Specifications
| Model | Airtac SI125 Standard Cylinder SI125X60TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI125X60TC |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAI125X60TC 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 SAI125X60TC 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 SI125X60TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SI125X60TC Is Used
Heavy Press Operations
Applies 6136 N of thrust at 0.5 MPa for securely seating large bearings and heavy mechanical components in automated assembly lines.
Pallet Positioning
Utilizes the ISO 15552 TC trunnion mount to articulate smoothly while indexing loaded pallets at transfer stations.
Industrial Clamp Arms
Drives robust clamping arms holding heavy steel fabrications in place during machining and welding processes.
Replacing the Airtac SI125 Standard Cylinder SI125X60TC with the SAI125X60TC
To replace the SI125X60TC, order the SAI125X60TC and confirm the ISO 15552 TC trunnion interface, 125 mm bore, 60 mm stroke, and G1/2 port. If you need position sensing, you must select an SAI variant with the -S magnet, as this legacy SKU cannot host a sensor. Sizing both ways: the neighboring 100 mm bore yields 3927 N push at 0.5 MPa, while the 160 mm bore yields 10053 N. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI125X60TC
- ✓ 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 SI125X60TC FAQ
Yes, the SI125X60TC is discontinued. The direct replacement is the SAI125X60TC. It maintains the exact ISO 15552 mounting interface, 125 mm bore, 60 mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly.
This 125 mm bore cylinder uses a G1/2 port. It generates 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, 11045 N push at 0.9 MPa, and a theoretical maximum of 1251 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI125X60TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI125X60TC replacement — usually within 7-8 hours.