This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X185Y, 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 SI100X185Y
The AirTAC SI100 Standard Cylinder SI100X185Y is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 185mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X185Y, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X185Y
- 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 SI100X185Y
The AirTAC SI100X185Y is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and adjustable air cushions at both ends. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X185Y. This direct upgrade shares the exact same mounting interface, 100 mm bore, 185 mm stroke, and output force.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. For sensing, note this specific SI SKU lacks a magnet (-S) and cannot accept a CS1-B or DS1-B switch.
Airtac SI100 Standard Cylinder SI100X185Y Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X185Y |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X185Y |
| Bore size | Ø100 mm |
| Stroke | 185 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 SAI100X185Y 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 SAI100X185Y 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 SI100X185Y
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×185 | 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 SI100X185Y Is Used
Heavy-Duty Pressing
Applies up to 5497 N at 0.7 MPa for seating bearings, stamping light components, or forming assemblies securely in automated machining cells.
Product Diversion
Pushes heavy goods across conveyor belts using the 185 mm stroke, handling rigid payloads with robust 25 mm carbon steel rod endurance.
Replacing the Airtac SI100 Standard Cylinder SI100X185Y with the SAI100X185Y
To replace the SI100X185Y, order the SAI100X185Y. Verify your ISO 15552 mounting accessory (LB foot, FA flange, TC trunnion, etc.) and the G1/2 air port. Because this SKU lacks a magnet, you cannot mount position sensors; order an SAI variant with the S suffix if you need switches. The 100 mm bore yields 3927 N push at 0.5 MPa; if you need less force, the 80 mm bore offers 2513 N. For higher force, the 125 mm bore provides 6136 N. Remember, a standard cylinder drifts on air loss—the cushion only decelerates near stroke end. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants. At 185 mm stroke, side-load is minimal, but always ensure proper guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X185Y
- ✓ 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 SI100X185Y FAQ
Yes, the SI100X185Y is discontinued. The direct replacement is the SAI100X185Y. It is dimensionally interchangeable per ISO 15552, maintaining the same 100 mm bore, 185 mm stroke, G1/2 port, and mounting interface, so it drops directly into existing fixtures.
The bore is 100 mm with a G1/2 port. Force output is 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. It operates at 30-800 mm/s with a 36 mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X185Y
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X185Y replacement — usually within 7-8 hours.