This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX175, 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 SI100BX175
The AirTAC Airtac SI100 Standard Cylinder SI100BX175 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX175, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX175
- 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 SI100BX175
The AirTAC SI100BX175 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 175mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100BX175, sharing identical ISO 15552 mounting dimensions, output force and stroke.
This SKU lacks a magnet (-S) and cannot accept a sensor. The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. For load holding, note the cushion only decelerates; use a pilot check valve.
Airtac SI100 Standard Cylinder SI100BX175 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX175 |
| Bore size | Ø100 mm |
| Stroke | 175 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 SAI100BX175 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 SAI100BX175 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 SI100BX175
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×175 | 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 SI100BX175 Is Used
Heavy-Duty Pressing
Applies 5497N of push force at 0.7MPa for seating bearings or clinching metal panels in automated assembly lines.
Pallet Diversion
Drives robust mechanical stops or diverter arms on heavy-duty conveyor sections handling loaded pallets.
Replacing the Airtac SI100 Standard Cylinder SI100BX175 with the SAI100BX175
To replace the SI100BX175, order the SAI100BX175. Verify the ISO 15552 interface, 100mm bore, 175mm stroke, G1/2 port (PT/G/NPT) and mounting accessory. Because this SKU lacks a magnet, it cannot take a switch; if sensing is needed, order an SAI with the -S suffix for CS1-B/DS1-B compatibility. The SUS304 stainless rod (-B) suits corrosive environments. Sizing both ways: the 100mm bore yields 3927N push at 0.5MPa (801kgf max at 1.0MPa); if oversizing, an 80mm bore gives 2513N. A plain cylinder drifts on air loss, so for held loads use the SAIL lock, BSAI clamp-lock, or an external pilot check valve. The 175mm stroke is under the 300mm side-load threshold, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX175
- ✓ 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 SI100BX175 FAQ
Yes, the AirTAC SI100BX175 is discontinued. The direct replacement is the SAI100BX175. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 175mm stroke, force, G1/2 port and mounting interface.
The bore is 100mm with a G1/2 air port. Force ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX175
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX175 replacement — usually within 7-8 hours.