This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX65, 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 SI100BX65
The AirTAC Airtac SI100 Standard Cylinder SI100BX65 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 65mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX65, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX65
- 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 SI100BX65
The AirTAC SI100BX65 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 65 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX65, matching the exact interface, bore, stroke, and output force.
This SKU lacks a magnet and cannot take a sensor, unlike legacy CS1-B/DS1-B switches. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. For load holding, note the cushion only decelerates; use an external rod lock or SAIL/BSAI variant.
Airtac SI100 Standard Cylinder SI100BX65 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX65 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX65 |
| Bore size | Ø100 mm |
| Stroke | 65 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 SAI100BX65 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 SAI100BX65 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 SI100BX65
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×65 | 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 SI100BX65 Is Used
Heavy-Duty Pressing
Drives 3927 N at 0.5 MPa for seating bearings and forming thick-gauge metal components in automated machinery.
Logistics Diverters
Actuates heavy lane diverters and sorting gates where the 65 mm stroke provides rapid, high-force routing.
Replacing the Airtac SI100 Standard Cylinder SI100BX65 with the SAI100BX65
To replace the SI100BX65, order the SAI100BX65. Confirm the ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread. Because this SKU has no -S magnet, it cannot accept position sensors. If you need sensing, select an SAI model with the S suffix for current AirTAC switches. The SUS304 stainless rod (-B) offers corrosion resistance versus standard carbon steel. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while an 80 mm bore provides 2513 N. For suspended loads, a plain cylinder drifts without air; add a pilot check valve or use the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX65
- ✓ 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 SI100BX65 FAQ
Yes, the AirTAC SI100BX65 is discontinued. The direct replacement is the SAI100BX65. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 65 mm stroke, G1/2 port, and mounting fixtures.
The G1/2 port feeds a 100 mm bore that yields 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX65
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX65 replacement — usually within 7-8 hours.