This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X50SFA, 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 SI160X50SFA
The AirTAC Airtac SI160 Standard Cylinder SI160X50SFA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X50SFA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X50SFA
- 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 SI160X50SFA
The AirTAC SI160X50SFA is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, an FA flange mounting interface, and a built-in piston magnet. Delivering 10053 N of push force at 0.5 MPa, it utilizes a G3/4 air port and a M36x2 piston rod thread. The direct replacement is the SAI160X50SFA, which maintains the identical bore, stroke, force, port, and ISO 15552 mounting dimensions.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the legacy line. Your existing CS1-B/DS1-B sensors will mount to the magnet groove, though the SAI uses current AirTAC switches.
Airtac SI160 Standard Cylinder SI160X50SFA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X50SFA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X50SFA |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160X50SFA 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 SAI160X50SFA 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 SI160X50SFA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160X50SFA Is Used
Heavy Press Clamping
Ideal for exerting massive clamping force on automotive or structural steel components, utilizing the 14074 N push force at 0.7 MPa to hold workpieces securely during machining.
Pallet Dispenser
Short 50 mm stroke moves heavy empty pallets into positioning chutes, where the robust 40 mm rod handles the high side-load of industrial logistics without deflection.
Injection Mold Eject
Provides a powerful ejection burst for large plastic injection molds, safely moving heavy parts out of the tool cavity using the FA flange mount for rigid tool integration.
Replacing the Airtac SI160 Standard Cylinder SI160X50SFA with the SAI160X50SFA
To replace the discontinued SI160X50SFA, order the SAI160X50SFA. It is a direct per the ISO 15552 mounting interface, matching the 160 mm bore, 50 mm stroke, G3/4 port, FA flange, and magnet. If you need to size both ways, the neighboring bores are 125 mm and 200 mm. At 0.5 MPa, this 160 mm bore yields 10053 N push and 9425 N pull. Note that a plain cylinder drifts on air loss; the 50 mm cushion only decelerates near stroke end. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. If scaling up, remember bores 125 mm and larger have a 30-500 mm/s speed range.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X50SFA
- ✓ 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 SI160X50SFA FAQ
Yes, the SI160X50SFA is discontinued. The direct replacement is the SAI160X50SFA. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 50 mm stroke, G3/4 port, FA flange, and output force.
This double-acting cylinder has a 160 mm bore, 40 mm rod, M36x2 thread, and a 50 mm cushion stroke. The thrust is 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 maximum theoretical force of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X50SFA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X50SFA replacement — usually within 7-8 hours.