This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X160TC, 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 SI50 Standard Cylinder SI50X160TC
The AirTAC SI50 Standard Cylinder SI50X160TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X160TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X160TC
- 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 SI50 Standard Cylinder SI50X160TC
The AirTAC SI50X160TC is a discontinued double-acting ISO 15552 profile cylinder with a 50 mm bore and 160 mm stroke. It delivers 982 N push force at 0.5 MPa via a G1/4 port. The direct replacement is the SAI50X160TC, matching the TC trunnion mount, M16x1.5 rod, and 30 mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches require an -S model.
Airtac SI50 Standard Cylinder SI50X160TC Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X160TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X160TC |
| Bore size | Ø50 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI50X160TC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAI50X160TC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI50 Standard Cylinder SI50X160TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×160 | 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 SI50 Standard Cylinder SI50X160TC Is Used
Trunnion-Mounted Diversion
Ideal for pivoting conveyor diverters where the TC trunnion mount handles arc loads, using the 982 N thrust to push packages at 30-800 mm/s.
Pallet Stop Gate
Provides reliable stopping force for medium-weight pallets, with the 160 mm stroke clearing the path for forklift passage.
Fixture Clamping
Holds workpieces in machining fixtures, delivering 825 N pull force at 0.5 MPa to secure parts during light milling operations.
Replacing the Airtac SI50 Standard Cylinder SI50X160TC with the SAI50X160TC
To replace the SI50X160TC, order the SAI50X160TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, preserving the TC trunnion mount, 160 mm stroke, G1/4 port, and 982 N output. If sizing up or down, neighboring bores are 40 mm (628 N push @0.5 MPa) and 63 mm (1559 N push @0.5 MPa). Because this is a non-magnet SKU, it cannot accept a sensor; order an -S suffix if position feedback is needed. A plain cylinder does not hold load 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 SAI family also adds the SAIF self-valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X160TC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI50 Standard Cylinder SI50X160TC FAQ
Yes, the SI50X160TC is discontinued. The direct replacement is the SAI50X160TC. It is dimensionally interchangeable per ISO 15552, keeping the same 50 mm bore, 160 mm stroke, TC trunnion mount, G1/4 port, and 982 N force.
This double-acting cylinder has a G1/4 port. At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa push is 1374 N, and at 0.9 MPa it is 1767 N. The theoretical max force is 200 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X160TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X160TC replacement — usually within 7-8 hours.