This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X400TC, 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 SI100X400TC
The AirTAC Airtac SI100 Standard Cylinder SI100X400TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X400TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X400TC
- 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 SI100X400TC
The AirTAC SI100X400TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 400mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X400TC, a direct upgrade retaining the exact ISO 15552 mounting interface, TC trunnion mount, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SKU lacks the -S magnet, it cannot accept a sensor. The family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI100 Standard Cylinder SI100X400TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X400TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X400TC |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAI100X400TC 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 SAI100X400TC 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 SI100X400TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SI100X400TC Is Used
Heavy Press Staging
Feeds large blanks into a forming press using the 3927 N push force, with the TC trunnion absorbing pivot stresses during 400mm transfers.
Bulk Material Diversion
Drives large lane diverters on high-capacity packaging lines, relying on the 36mm adjustable air cushions to decelerate substantial moving loads.
Replacing the Airtac SI100 Standard Cylinder SI100X400TC with the SAI100X400TC
To replace the SI100X400TC, order the SAI100X400TC. Confirm the ISO 15552 TC trunnion interface, 100mm bore, 400mm stroke, G1/2 port (PT/G/NPT), and M20x1.5 rod thread. Since this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B switches; order a magnet-equipped SAI if sensing is needed. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. For the 400mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X400TC
- ✓ 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 SI100X400TC FAQ
Yes, the SI100X400TC is discontinued. The direct replacement is the SAI100X400TC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 400mm stroke, G1/2 port, TC mount, and output force, so it drops into existing fixtures.
This double-acting cylinder has a G1/2 port and delivers 3927 N push / 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 with a 36mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X400TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X400TC replacement — usually within 7-8 hours.