This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX210, 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 SI160AX210
The AirTAC Airtac SI160 Standard Cylinder SI160AX210 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 210mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX210, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke210 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX210
- 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 SI160AX210
The AirTAC SI160AX210 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 210 mm stroke. It delivers 10053 N of push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160AX210, which maintains the exact same interface, output, and mounting dimensions.
Upgrading to the SAI160AX210 introduces a superior piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU lacks a magnet (-S) and therefore cannot accept position switches like the legacy CS1-B or DS1-B. The default carbon-steel rod can be swapped for the SUS420J2 stainless option (-A) for corrosive settings.
Airtac SI160 Standard Cylinder SI160AX210 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX210 |
| Bore size | Ø160 mm |
| Stroke | 210 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 SAI160AX210 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 SAI160AX210 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 SI160AX210
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×210 | 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 SI160AX210 Is Used
Heavy Press Clamping
Generates up to 18095 N at 0.9 MPa to secure large metal castings during machining operations.
Stamping Press Ram
Drives tooling downward with 14074 N at 0.7 MPa, utilizing the 50 mm adjustable cushions to absorb impact.
Replacing the Airtac SI160 Standard Cylinder SI160AX210 with the SAI160AX210
To replace the obsolete SI160AX210, order the SAI160AX210 and verify the ISO 15552 mounting interface, 210 mm stroke, and G3/4 port. Confirm your thread standard (PT, G, or NPT) and mounting accessory (such as LB foot or TC trunnion). Because this SKU has no magnet, you must use external sensors if position detection is required. When sizing, consider the 125 mm bore (6136 N push @0.5 MPa) for lighter loads or the 200 mm bore (15708 N) for heavier needs. Since the 210 mm stroke is under 300 mm, rod bending is less critical, but always ensure proper alignment to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX210
- ✓ 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 SI160AX210 FAQ
Yes, the SI160AX210 is discontinued. The direct replacement is the SAI160AX210. It is a true ISO 15552 profile cylinder that matches the 160 mm bore, 210 mm stroke, G3/4 port, and mounting interface, fitting existing fixtures perfectly.
The G3/4 ported 160 mm bore provides a push force of 10053 N and pull of 9425 N at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX210 replacement — usually within 7-8 hours.