This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1550STC, 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 SI160X1550STC
The AirTAC SI160 Standard Cylinder SI160X1550STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1550mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1550STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1550STC
- 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 SI160X1550STC
The AirTAC SI160X1550STC is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel and a built-in magnet (-S). Designed for heavy-duty thrust (10053 N push at 0.5 MPa), it includes a TC trunnion mount and a 1550 mm stroke that exceeds the 1500 mm standard, making it a non-standard, made-to-order unit. The direct replacement is the SAI160X1550STC, sharing the same bore, force, G3/4 port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The original SI relies on CS1-B/DS1-B legacy sensors, whereas the SAI family uses current AirTAC switches and adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160X1550STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1550STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1550STC |
| Bore size | Ø160 mm |
| Stroke | 1550 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 SAI160X1550STC 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 SAI160X1550STC 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 SI160X1550STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1550 | 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 SI160X1550STC Is Used
Heavy Press Demolding
Generates 10053 N at 0.5 MPa to break loose stubborn injection-molded parts, utilizing the 1550 mm travel to reach deep into large tooling.
Pallet Transfer Line
Uses the TC trunnion mount to articulate smoothly while pushing heavy loaded pallets along a high-throughput assembly conveyor.
Replacing the Airtac SI160 Standard Cylinder SI160X1550STC with the SAI160X1550STC
To replace the SI160X1550STC, order the SAI160X1550STC. Verify your ISO 15552 TC trunnion interface, 160 mm bore, 1550 mm non-standard stroke, G3/4 port, and magnet requirement. Because this 1550 mm stroke exceeds the 1500 mm maximum standard and creates a long lever arm, you must use external guides to prevent rod bending and side-load damage. If sizing alternatives, neighboring bores offer different force classes; this bore provides 14074 N at 0.7 MPa. Remember that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so for load holding, specify an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1550STC
- ✓ 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 SI160X1550STC FAQ
Yes, the SI160X1550STC is discontinued. The direct replacement is the SAI160X1550STC. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 1550 mm stroke, G3/4 port, TC mount, and output force.
This double-acting cylinder has 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 a theoretical maximum force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1550STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1550STC replacement — usually within 7-8 hours.