This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X85, 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 SI100X85
The AirTAC Airtac SI100 Standard Cylinder SI100X85 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 85mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X85, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X85
- 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 SI100X85
The AirTAC SI100X85 is a discontinued double-acting ISO 15552 profile cylinder with an 85 mm stroke, delivering a push force of 3927 N and pull of 3681 N at 0.5 MPa. It features a 25 mm carbon steel rod, M20x1.5 thread, and a G1/2 port. As this SKU lacks the -S magnet, it cannot accept a position switch.
You must replace it with the direct replacement SAI100X85, which shares the exact ISO 15552 mounting interface, bore, and output. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure, and introduces SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X85 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X85 |
| Bore size | Ø100 mm |
| Stroke | 85 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 SAI100X85 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 SAI100X85 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 SI100X85
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×85 | 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 SI100X85 Is Used
Heavy Press Stamping
Drives large forming dies and stamping fixtures requiring substantial push force over an 85 mm travel distance.
Pallet Diversion
Actuates heavy-duty lane diverters and sorting gates on high-capacity packaging conveyor lines.
Material Lift Stations
Provides the vertical lifting power needed to raise loaded pallets or heavy totes into positioning cradles.
Replacing the Airtac SI100 Standard Cylinder SI100X85 with the SAI100X85
To replace the SI100X85, order the SAI100X85, confirming the ISO 15552 interface, 85 mm stroke, G1/2 port, and mounting accessory. Because this specific SKU has no -S suffix, it cannot support a magnetic sensor; if sensing is needed, select an SAI100X85S and use current AirTAC switches. Remember, a standard cylinder drifts without live air; for load holding, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X85
- ✓ 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 SI100X85 FAQ
Yes, the SI100X85 is discontinued. The direct replacement is the AirTAC SAI100X85. It shares the identical ISO 15552 mounting interface, 100 mm bore, 85 mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
This double-acting cylinder uses a G1/2 port and generates a push force of 3927 N and pull force of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, at 0.9 MPa it is 7068 N, and the theoretical maximum is 801 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X85 replacement — usually within 7-8 hours.