This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X500SFA, 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 SI160X500SFA
The AirTAC SI160 Standard Cylinder SI160X500SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X500SFA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke500 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X500SFA
- 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 SI160X500SFA
The AirTAC SI160X500SFA is a discontinued double-acting ISO 15552 profile cylinder with a 160mm bore and 500mm stroke. Delivering 10053N push at 0.5MPa through a G3/4 port, it is replaced by the SAI160X500SFA direct. The SAI retains the same FA flange mounting, M36x2 thread, and force ratings, but uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
The SAI family also introduces SAIL and BSAI lock variants the SI lacked. This -S SKU includes a piston magnet for CS1-B/DS1-B sensors, while Viton H seals can raise the operating temperature to 150C.
Airtac SI160 Standard Cylinder SI160X500SFA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X500SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X500SFA |
| Bore size | Ø160 mm |
| Stroke | 500 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 SAI160X500SFA 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 SAI160X500SFA 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 SI160X500SFA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×500 | 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 SI160X500SFA Is Used
Heavy Press Systems
Drives large stamping and forming presses where the 18095N push at 0.9MPa and 500mm travel are required for deep draw operations.
Pallet Transfer
Indexes heavy loaded pallets along conveyor lines, utilizing the FA flange mount to handle the 512kg vertical lift capacity safely.
Automated Assembly
Actuates large industrial fixture clamps and heavy tooling bases, relying on the 50mm adjustable air cushions to decelerate massive loads.
Replacing the Airtac SI160 Standard Cylinder SI160X500SFA with the SAI160X500SFA
To replace the SI160X500SFA, order the SAI160X500SFA. It is dimensionally interchangeable per ISO 15552, matching the 160mm bore, 500mm stroke, G3/4 port, and FA flange. Keep the -S magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If you need more force, the 200mm bore offers 15708N push at 0.5MPa; if less is required, the 125mm bore provides 6136N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL/BSAI lock variant. For this 500mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X500SFA
- ✓ 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 SI160X500SFA FAQ
Yes, the SI160X500SFA is discontinued. The direct replacement is the SAI160X500SFA. It matches the ISO 15552 mounting interface, 160mm bore, 500mm stroke, output force, G3/4 port, and FA flange, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/4 port and M36x2 rod thread. It delivers 10053N push and 9425N pull at 0.5MPa, 14074N push at 0.7MPa, 18095N push at 0.9MPa, and a theoretical max of 2050kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X500SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X500SFA replacement — usually within 7-8 hours.