This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X255, 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 SI160 Standard Cylinder SI160X255
The AirTAC SI160 Standard Cylinder SI160X255 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 255mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X255, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke255 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X255
- 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 SI160 Standard Cylinder SI160X255
The AirTAC SI160X255 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 255 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a 40 mm carbon steel rod, M36x2 thread, and a G3/4 port. The direct replacement is the SAI160X255, matching the exact bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures.
The SAI160X255 upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. This non-magnet SKU cannot accept a sensor. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI160 Standard Cylinder SI160X255 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X255 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X255 |
| Bore size | Ø160 mm |
| Stroke | 255 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X255 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X255 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X255
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×255 | 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 SI160 Standard Cylinder SI160X255 Is Used
Heavy Press Operations
Drives substantial forming and stamping presses requiring up to 14074 N of thrust at 0.7 MPa.
Pallet Handling
Indexes heavy loaded pallets along conveyors where a 512 kg vertical lift margin is needed.
Industrial Clamp Systems
Secures large fabricated components during machining using robust 40 mm carbon steel rods.
Replacing the Airtac SI160 Standard Cylinder SI160X255 with the SAI160X255
To replace the SI160X255, order the SAI160X255. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/4 port, and the 255 mm stroke. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. If sizing up or down, note the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. Since this is a plain double-acting cylinder, it will not hold a load on air loss; the 50 mm cushions only decelerate. For load holding, specify an external pilot check valve or the SAIL/BSAI lock variants. At 255 mm, ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X255
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X255 FAQ
Yes, the SI160X255 is discontinued. The direct replacement is the SAI160X255. It shares the identical ISO 15552 mounting interface, 160 mm bore, 255 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder uses a G3/4 port. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and 18095 N push at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X255
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X255 replacement — usually within 7-8 hours.