This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X140STC, 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 SI100X140STC
The AirTAC SI100 Standard Cylinder SI100X140STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 140mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X140STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X140STC
- 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 SI100X140STC
The AirTAC SI100X140STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 140mm stroke, TC trunnion mount, and a piston magnet for CS1-B/DS1-B switches. Delivering 3927 N push force at 0.5 MPa, it features a Ø25mm rod, M20x1.5 thread, and a G1/2 port.
Order the direct replacement SAI100X140STC: it shares the exact ISO 15552 mounting interface, bore, stroke, output force, and port. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X140STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X140STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X140STC |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAI100X140STC 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 SAI100X140STC 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 SI100X140STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SI100X140STC Is Used
Heavy Press Stamping
Provides 5497 N of thrust at 0.7 MPa for forming and stamping thick metal panels in automated fabrication lines.
Pallet Diversion
Uses the TC trunnion mount to articulate smoothly while pushing heavy 200kg loaded pallets onto secondary assembly tracks.
Bulk Lift Gates
Raises and lowers industrial loading bay gates, relying on the 36mm adjustable air cushions to decelerate the heavy mass safely.
Replacing the Airtac SI100 Standard Cylinder SI100X140STC with the SAI100X140STC
To replace the SI100X140STC, specify the SAI100X140STC to retain the exact ISO 15552 TC trunnion mount, 100mm bore, 140mm stroke, G1/2 port, and -S magnet. Confirm your port thread (PT, G, or NPT) and rod material (carbon, SUS420J2, or SUS304). Sizing both ways: a 100mm bore yields 5497 N at 0.7 MPa, while an 80mm bore yields 3518 N. Because this is a double-acting cylinder, it will drift if air is lost; the 36mm adjustable cushions only decelerate near stroke ends. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X140STC
- ✓ 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 SI100X140STC FAQ
Yes, the AirTAC SI100X140STC is discontinued. The direct replacement is the SAI100X140STC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 140mm stroke, G1/2 port, TC mount, and output force exactly.
This double-acting cylinder has a G1/2 port. The thrust ratings are 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X140STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X140STC replacement — usually within 7-8 hours.