This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X100STC, 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 SI100X100STC
The AirTAC Airtac SI100 Standard Cylinder SI100X100STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X100STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X100STC
- 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 SI100X100STC
The AirTAC SI100X100STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 100mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the direct replacement SAI100X100STC, which shares the exact TC trunnion mounting and dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. It also adds SAIL, SAIF and BSAI variants the SI lacked. With the -S magnet, this model accepts legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X100STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X100STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X100STC |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAI100X100STC 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 SAI100X100STC 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 SI100X100STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SI100X100STC Is Used
Heavy Press Clamping
Applies the 3927N push force at 0.5MPa to secure heavy metal components during machining or stamping operations.
Pallet Diversion
Uses the TC trunnion mount to pivot and redirect large loaded pallets along high-throughput material handling lines.
Replacing the Airtac SI100 Standard Cylinder SI100X100STC with the SAI100X100STC
To replace the SI100X100STC, order the SAI100X100STC keeping the 100mm bore, 100mm stroke, G1/2 port, TC trunnion mount and -S magnet. The SAI fits the exact ISO 15552 interface. If sizing alternatives, neighboring bores (80mm or 125mm) change the footprint, while 0.5MPa yields 3927N push and 3681N pull. Note that plain cylinders drift without live air; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The SAIF variant integrates a 4M valve for bores up to 100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X100STC
- ✓ 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 SI100X100STC FAQ
Yes, the SI100X100STC is discontinued. The direct replacement is the SAI100X100STC. It shares the same ISO 15552 mounting interface, 100mm bore, 100mm stroke, G1/2 port and TC trunnion accessory, fitting directly into existing fixtures.
This double-acting cylinder has a G1/2 port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. It operates at 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X100STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X100STC replacement — usually within 7-8 hours.