This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X50TC, 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 SI100X50TC
The AirTAC Airtac SI100 Standard Cylinder SI100X50TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X50TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X50TC
- 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 SI100X50TC
The AirTAC SI100X50TC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 50 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100X50TC, which shares identical mounting, force, and port specs.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. Note this non-magnet SKU cannot fit sensors, and the TC mount relies on external locks for load holding.
Airtac SI100 Standard Cylinder SI100X50TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X50TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X50TC |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAI100X50TC 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 SAI100X50TC 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 SI100X50TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SI100X50TC Is Used
Heavy-Duty Pressing
Drives high-force stamping and pin insertion operations, utilizing the 3927 N thrust at 0.5 MPa for rigid material deformation.
Pallet Diversion
Actuates heavy lane diverters and stopping mechanisms on packaging lines, relying on the robust TC trunnion mount to handle side loads.
Replacing the Airtac SI100 Standard Cylinder SI100X50TC with the SAI100X50TC
To replace the SI100X50TC, order the SAI100X50TC. It drops directly into existing ISO 15552 fixtures via the TC trunnion mount, matching the 100 mm bore, 50 mm stroke, G1/2 port, and M20x1.5 rod thread. This non-magnet version cannot accept CS1-B/DS1-B sensors. For sizing, a neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore offers 6136 N. The air cushion only decelerates; it does not hold loads. For drop prevention, use an external pilot check valve or the SAIL/BSAI lock variants. SAIF self-valve types are also available.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X50TC
- ✓ 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 SI100X50TC FAQ
Yes, the SI100X50TC is discontinued. The direct replacement is the SAI100X50TC. It is dimensionally interchangeable per ISO 15552, maintaining the same 100 mm bore, 50 mm stroke, G1/2 port, and TC mounting interface.
This double-acting cylinder uses a G1/2 port. It generates 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N push at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X50TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X50TC replacement — usually within 7-8 hours.