This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X110TC, 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.

The AirTAC SI100 Standard Cylinder SI100X110TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 110mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X110TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X110TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 110mm stroke, delivering a push force of 3927 N at 0.5 MPa. It features a G1/2 air port and a TC trunnion mounting interface. Because this legacy unit lacks the -S magnet suffix, it cannot accept position sensors.
The direct replacement is the SAI100X110TC, which retains the exact ISO 15552 mounting dimensions, bore, stroke, force, and port size. The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
| Model | Airtac SI100 Standard Cylinder SI100X110TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X110TC |
| Bore size | Ø100 mm |
| Stroke | 110 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 SAI100X110TC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X110TC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×110 | 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).
Applies the 3927 N push force at 0.5 MPa for seating bearings or assembling heavy mechanical components on an automated line.
Uses the TC trunnion mount to pivot a heavy diverter arm, smoothly routing loaded pallets via the adjustable 36mm air cushions.
To replace the SI100X110TC, order the SAI100X110TC and confirm the ISO 15552 TC trunnion mount, G1/2 port, and 110mm stroke. This no-magnet SKU cannot take a sensor; if sensing is needed, order an SAI with the -S suffix and use current AirTAC switches. Sizing both ways: the 100mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80mm bore offers 2513 N. A plain cylinder drifts on air loss since cushions only decelerate; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant (bores 32-100) integrates a 4M valve if you need to save space. With a 110mm stroke, side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
Yes, the SI100X110TC is discontinued. The direct replacement is the SAI100X110TC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 110mm stroke, G1/2 port, and TC trunnion mount for existing fixtures.
This double-acting cylinder uses a G1/2 port. It delivers a push of 3927 N and pull of 3681 N 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. Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X110TC replacement — usually within 7-8 hours.