This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X250TCN, 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 SI100X250TCN
The AirTAC SI100 Standard Cylinder SI100X250TCN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X250TCN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X250TCN
- 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 SI100X250TCN
The AirTAC SI100X250TCN is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 250mm stroke. It delivers a push force of 3927 N at 0.5 MPa and features a G1/2 port with a TC trunnion mount. The direct replacement is the SAI100X250TCN, which shares the exact same ISO 15552 mounting interface, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnetic SKU cannot take a sensor; legacy -S versions used CS1-B/DS1-B switches. The NBR seal supports -20 to +70 C, while a Viton H option extends this to 150 C.
Airtac SI100 Standard Cylinder SI100X250TCN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X250TCN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X250TCN |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAI100X250TCN 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 SAI100X250TCN 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 SI100X250TCN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SI100X250TCN Is Used
Heavy Material Handling
Ideal for driving heavy clamps and lifts on automated assembly lines, utilizing the 3927 N push force at 0.5 MPa to move substantial payloads reliably.
Large Part Ejection
Provides robust ejection force for large molded or machined parts, with the 250mm stroke offering ample travel distance for safe clearance.
Pallet Positioning
Serves as a robust stopper or positioning cylinder in conveyor systems, leveraging the TC trunnion mount to handle offset loads smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X250TCN with the SAI100X250TCN
To replace the SI100X250TCN, order the SAI100X250TCN. Verify the ISO 15552 TC trunnion interface, 100mm bore, 250mm stroke, and G1/2 port (PT/G/NPT thread options). This non-magnetic SKU cannot accept a sensor; if position detection is needed, select an SAI100X250-S equivalent and use current AirTAC switches. The 250mm stroke is under the 1500mm standard maximum, so no side-load concerns apply. If sizing down, the 80mm bore offers 2513 N push at 0.5 MPa; if sizing up, the 125mm bore provides 6136 N. Remember, a plain cylinder does not hold load on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X250TCN
- ✓ 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 SI100X250TCN FAQ
Yes, the AirTAC SI100X250TCN is discontinued. The direct replacement is the SAI100X250TCN. It is dimensionally interchangeable per ISO 15552, maintaining the same bore, stroke, force, G1/2 port, and TC mounting interface.
At 0.5 MPa, the push force is 3927 N and pull is 3681 N. At 0.7 MPa it pushes 5497 N, and 7068 N at 0.9 MPa. The theoretical max is 801 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and the NBR seal handles -20 to +70 C.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X250TCN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X250TCN replacement — usually within 7-8 hours.