This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X450TC, 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 SI100X450TC
The AirTAC Airtac SI100 Standard Cylinder SI100X450TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X450TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X450TC
- 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 SI100X450TC
The AirTAC SI100X450TC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 450 mm stroke. It delivers a push force of 3927 N at 0.5 MPa (5497 N at 0.7 MPa) and uses a G1/2 port. The direct replacement is the SAI100X450TC, which preserves the exact TC trunnion mounting, output force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this specific SKU lacks a magnet and cannot accept a sensor; the legacy SI used CS1-B/DS1-B switches. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI100 Standard Cylinder SI100X450TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X450TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X450TC |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAI100X450TC 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 SAI100X450TC 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 SI100X450TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SI100X450TC Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy workpiece diverters on high-capacity production lines using its 3927 N push force.
Pallet Positioning Gates
Actuates large automated storage and retrieval system gates, utilizing the 450 mm stroke and TC trunnion mount for pivoting motion.
Replacing the Airtac SI100 Standard Cylinder SI100X450TC with the SAI100X450TC
To replace the SI100X450TC, order the SAI100X450TC keeping the identical 100 mm bore, 450 mm stroke, G1/2 port, and TC trunnion mount. Because this 450 mm stroke exceeds 300 mm, use an external guide to prevent rod bending and side-load wear. Size both ways: neighboring bores (80 mm or 125 mm) alter the footprint, while at 0.5 MPa you get 3927 N push and 3681 N pull. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. This non-magnet SKU cannot take a sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X450TC
- ✓ 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 SI100X450TC FAQ
Yes, the SI100X450TC is discontinued. The direct replacement is the SAI100X450TC. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 450 mm stroke, G1/2 port, TC mount, and output force exactly.
This double-acting cylinder has a G1/2 port. The thrust is 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X450TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X450TC replacement — usually within 7-8 hours.