This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X420TC, 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 SI160X420TC
The AirTAC SI160 Standard Cylinder SI160X420TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 420mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X420TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke420 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X420TC
- 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 SI160X420TC
The AirTAC SI160X420TC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 420 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. Because this legacy SI unit is end-of-life, you should order the direct replacement: the SAI160X420TC. It shares the same ISO 15552 mounting interface, bore, stroke, force, port and TC trunnion mount.
The SAI upgrade introduces a refined piston seal featuring two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), so it cannot accept position sensors. If higher temperatures are needed, a Viton H seal option raises the operating range to 0-150 C.
Airtac SI160 Standard Cylinder SI160X420TC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X420TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X420TC |
| Bore size | Ø160 mm |
| Stroke | 420 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 SAI160X420TC 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 SAI160X420TC 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 SI160X420TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×420 | 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 SI160X420TC Is Used
Heavy Machinery Forming
Drives large presses and forming dies requiring substantial push force over a 420 mm travel distance.
Pallet Lifting Stations
Actuates heavy-duty lifts and elevators, moving loads up to the 512 kg safe vertical threshold.
Automated Assembly Presses
Provides high-thrust clamping for large component assembly, relying on the TC trunnion for alignment.
Replacing the Airtac SI160 Standard Cylinder SI160X420TC with the SAI160X420TC
To replace the discontinued SI160X420TC, order the SAI160X420TC. Confirm the ISO 15552 TC trunnion interface, 160 mm bore, 420 mm stroke, G3/4 port (PT/G/NPT thread options) and M36x2 rod thread. Size both ways: neighbouring bores offer different force classes, while this unit pushes 14074 N at 0.7 MPa. Because the stroke is 420 mm, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss—the 50 mm cushions only decelerate. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X420TC
- ✓ 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 SI160X420TC FAQ
Yes, the SI160X420TC is discontinued. The direct replacement is the SAI160X420TC. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 420 mm stroke, G3/4 port, output force and TC mounting interface.
This double-acting cylinder uses a G3/4 port. Theoretical forces are: 10053 N push / 9425 N pull at 0.5 MPa; 14074 N push at 0.7 MPa; 18095 N push at 0.9 MPa; and a maximum force of 2050 kgf at 1.0 MPa. It operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X420TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X420TC replacement — usually within 7-8 hours.