This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X270, 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 SI100X270
The AirTAC Airtac SI100 Standard Cylinder SI100X270 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 270mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X270, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X270
- 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 SI100X270
The AirTAC SI100X270 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 270mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X270. This direct successor matches the exact mounting interface, bore, and output force.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this non-magnet SKU cannot hold a sensor.
Airtac SI100 Standard Cylinder SI100X270 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X270 |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAI100X270 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 SAI100X270 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 SI100X270
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SI100X270 Is Used
Heavy-Duty Pressing
Applies the 5497 N push force at 0.7 MPa to seat bearings and assemble heavy mechanical components securely.
Pallet Diversion
Drives robust routing gates for high-mass material handling lines using the 100mm bore class and 270mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100X270 with the SAI100X270
To replace the SI100X270, order the SAI100X270. Confirm the ISO 15552 mounting interface, the 270mm stroke, and the G1/2 port. Because this is a non-S SKU, it cannot accept a CS1-B or DS1-B sensor; if position detection is needed, select an SAI model with the magnet option. Sizing both ways: the 100mm bore yields 3927 N at 0.5 MPa, while the neighbouring 80mm bore provides 2513 N. For load holding on air loss, a plain cylinder drifts; use an external pilot check valve or the SAIL/BSAI lock variant. At 270mm stroke, ensure guide alignment to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X270
- ✓ 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 SI100X270 FAQ
Yes, the SI100X270 is discontinued. The direct replacement is the SAI100X270, a current-production ISO 15552 cylinder. It matches the 100mm bore, 270mm stroke, G1/2 port, and mounting interface, dropping directly into existing fixtures.
The G1/2 port feeds a 25mm piston rod. Forces are: 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; with a theoretical max of 801 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X270
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X270 replacement — usually within 7-8 hours.