This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1800STC, 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 SI160X1800STC
The AirTAC SI160 Standard Cylinder SI160X1800STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1800mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1800STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1800 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1800STC
- 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 SI160X1800STC
The AirTAC SI160X1800STC is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and an 1800 mm non-standard stroke. It delivers 10053 N push force at 0.5 MPa and uses a G3/4 port with a 50 mm adjustable air cushion. AirTAC replaced this legacy unit with the SAI160X1800STC, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and TC trunnion mount.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Because this is a 1800 mm stroke exceeding the 1500 mm standard, it is made-to-order and requires external guides to prevent rod bending under side loads.
Airtac SI160 Standard Cylinder SI160X1800STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1800STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1800STC |
| Bore size | Ø160 mm |
| Stroke | 1800 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 SAI160X1800STC 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 SAI160X1800STC 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 SI160X1800STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1800 | 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 SI160X1800STC Is Used
Pallet Transfer
Provides the 10053 N push force at 0.5 MPa needed to index heavy pallets along extended assembly lines using TC trunnion mounting.
Automated Storage
Drives long-travel shuttle mechanisms in automated warehousing, moving substantial goods reliably with a 50 mm adjustable end cushion.
Replacing the Airtac SI160 Standard Cylinder SI160X1800STC with the SAI160X1800STC
To replace the SI160X1800STC, order the SAI160X1800STC, matching the 160 mm bore, 1800 mm stroke, TC trunnion mount, G3/4 port, and -S magnet for CS1-B/DS1-B sensors. When sizing, neighbouring bores offer different forces: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. At 0.7 MPa this 160 mm unit pushes 14074 N. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The 1800 mm length demands external guides to manage rod-bending risks.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1800STC
- ✓ 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 SI160X1800STC FAQ
Yes, the SI160X1800STC is discontinued. The direct replacement is the SAI160X1800STC. It shares the identical ISO 15552 mounting interface, 160 mm bore, 1800 mm stroke, output force, G3/4 port, and TC trunnion mount, fitting directly into existing fixtures.
This 160 mm bore cylinder features a G3/4 port and delivers 10053 N push and 9425 N pull at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1800STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1800STC replacement — usually within 7-8 hours.