This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX195, 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 Airtac SI100 Standard Cylinder SI100BX195 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 195mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX195, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100BX195 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and a 195mm nonstandard stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100BX195, matching the exact bore, stroke, output, and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU lacks a magnet (-S), so it cannot take a sensor. The SUS304 stainless rod (B) resists corrosion.
| Model | Airtac SI100 Standard Cylinder SI100BX195 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX195 |
| Bore size | Ø100 mm |
| Stroke | 195 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 SAI100BX195 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 SAI100BX195 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. |
| ×195 | 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).
Drives 3927N at 0.5MPa for seating bearings and heavy pressing tasks in automated machinery.
The SUS304 stainless rod handles washdown and corrosive factory settings better than carbon steel.
To replace the SI100BX195, order the SAI100BX195. Verify the ISO 15552 mounting interface, 195mm stroke, and G1/2 port. Because this lacks a magnet, it cannot accept CS1-B/DS1-B switches; add -S if sensing is needed. The 100mm bore yields 3927N push at 0.5MPa (80mm is 2513N, 125mm is 6136N). Note the 195mm stroke is nonstandard. Air cushions only decelerate; use a pilot check valve or SAIL/BSAI lock to hold loads.
Replacement checklist
Yes, the SI100BX195 is discontinued. The direct replacement is the SAI100BX195. It shares the same ISO 15552 mounting interface, 100mm bore, 195mm stroke, force, and G1/2 port, fitting existing fixtures perfectly.
The G1/2 port feeds thrust of 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX195 replacement — usually within 7-8 hours.