This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X320STC, 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 SI160X320STC
The AirTAC SI160 Standard Cylinder SI160X320STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 320mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X320STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke320 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X320STC
- 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 SI160X320STC
The AirTAC SI160X320STC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 320 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160X320STC, sharing the same TC trunnion mount, M36x2 rod thread, and interface dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, the standard cushion only decelerates; you need the SAIL lock or BSAI clamp-lock variant. With the -S magnet, use CS1-B/DS1-B switches.
Airtac SI160 Standard Cylinder SI160X320STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X320STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X320STC |
| Bore size | Ø160 mm |
| Stroke | 320 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 SAI160X320STC 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 SAI160X320STC 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 SI160X320STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×320 | 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 SI160X320STC Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 10053 N push force at 0.5 MPa to shape thick steel plates.
Pallet Positioning
Shifts loaded heavy-duty pallets along conveyors using the 320 mm stroke and TC trunnion mounting.
Mold Clamping
Secures industrial injection molds, utilizing the 18095 N push force at 0.9 MPa for rigid holding.
Replacing the Airtac SI160 Standard Cylinder SI160X320STC with the SAI160X320STC
To replace the SI160X320STC, order the SAI160X320STC. Verify the ISO 15552 TC trunnion mount, 320 mm stroke, G3/4 port, and -S magnet. Neighbouring bores are 125 mm (6136 N) and 200 mm (15708 N) at 0.5 MPa. A standard cylinder drifts without air; for load holding use the SAIL or BSAI lock variant. At 320 mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X320STC
- ✓ 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 SI160X320STC FAQ
Yes, the SI160X320STC is discontinued. The direct replacement is the SAI160X320STC. It features the same ISO 15552 mounting interface, 160 mm bore, 320 mm stroke, output force, G3/4 port, and TC trunnion mount.
It has a G3/4 port. Force ratings are: 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X320STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X320STC replacement — usually within 7-8 hours.