This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X165, 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 SI100X165
The AirTAC Airtac SI100 Standard Cylinder SI100X165 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X165, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X165
- 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 SI100X165
The AirTAC SI100X165 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 165mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X165. This direct successor matches the exact interface, bore, stroke, force and mounting hardware.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and extended life. Note this specific SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For high-heat environments, Viton H seals raise the operating ceiling to 150 C.
Airtac SI100 Standard Cylinder SI100X165 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X165 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X165 |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAI100X165 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 SAI100X165 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 SI100X165
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SI100X165 Is Used
Heavy-Duty Pressing
Drives robust clamping and pressing actions in automated machining centers, utilizing the 3927 N push force at 0.5 MPa to seat components firmly.
Package Diversion
Actuates heavy-duty routing gates on high-throughput conveyor lines, relying on the 36mm adjustable air cushions to decelerate the 25mm rod smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X165 with the SAI100X165
To replace the SI100X165, order the SAI100X165 and confirm the ISO 15552 mounting interface, 165mm stroke, G1/2 port (PT/G/NPT thread) and your mounting accessory (LB, FA, TC, etc.). This non-magnet version cannot host a sensor; order an SAI with the S suffix if position detection is required. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore provides 6136 N. At 165mm stroke, side-load risks are low, but always guide the rod to prevent bending. The standard cylinder does not hold load on air loss; for locking needs, specify the SAIL or BSAI variant, or add a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X165
- ✓ 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 SI100X165 FAQ
Yes, the SI100X165 is discontinued. The direct replacement is the AirTAC SAI100X165. It is dimensionally interchangeable per ISO 15552, retaining the identical 100mm bore, 165mm stroke, output force, G1/2 port and mounting interface, so it fits existing fixtures perfectly.
The 100mm bore uses a G1/2 air port and a 25mm rod with an M20x1.5 thread. At 0.5 MPa it provides 3927 N push and 3681 N pull force. At 0.7 MPa push is 5497 N, at 0.9 MPa it is 7068 N, and the theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X165
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X165 replacement — usually within 7-8 hours.