This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X25TC, 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 SI100 Standard Cylinder SI100X25TC
The AirTAC Airtac SI100 Standard Cylinder SI100X25TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X25TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X25TC
- 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 SI100 Standard Cylinder SI100X25TC
The AirTAC SI100X25TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 25mm stroke, delivering 3927N push force at 0.5MPa via a G1/2 port. As an end-of-line unit, it is replaced by the SAI100X25TC, a direct sharing the same TC trunnion mount, M20x1.5 rod thread, and 36mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and adds SAIL or BSAI lock variants absent in the SI line. This non-magnet SKU cannot take a sensor.
Airtac SI100 Standard Cylinder SI100X25TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X25TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X25TC |
| Bore size | Ø100 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X25TC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X25TC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X25TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 SI100 Standard Cylinder SI100X25TC Is Used
Short-Stroke Clamping
Ideal for high-force 3927N clamping of heavy weldments over a brief 25mm travel using the TC trunnion mount.
Press Ejection
Provides robust 100mm bore ejection force in tight spaces where a compact 25mm stroke is mechanically required.
Replacing the Airtac SI100 Standard Cylinder SI100X25TC with the SAI100X25TC
To replace the SI100X25TC, order the SAI100X25TC ensuring the ISO 15552 TC trunnion interface, 100mm bore, 25mm stroke, G1/2 port, and M20x1.5 thread match your fixture. This non-S SKU lacks a magnet and cannot accept CS1-B/DS1-B sensors. If sizing up or down, neighboring bores 80mm and 125mm yield 2513N and 6136N push at 0.5MPa respectively. Note that a plain cylinder drifts on air loss; cushions only decelerate. For load holding, specify the SAIL lock or BSAI clamp-lock variant, or add an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X25TC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X25TC FAQ
Yes, the SI100X25TC is discontinued. The direct replacement is the SAI100X25TC, which shares the identical ISO 15552 TC mounting interface, 100mm bore, 25mm stroke, force, and G1/2 port.
The 100mm bore uses a G1/2 port. At 0.5MPa it pushes 3927N and pulls 3681N. At 0.7MPa push is 5497N, and at 0.9MPa it is 7068N. The theoretical max force is 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X25TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X25TC replacement — usually within 7-8 hours.