This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X630S, 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 SI160X630S
The AirTAC SI160 Standard Cylinder SI160X630S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 630mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X630S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke630 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X630S
- 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 SI160X630S
The AirTAC SI160X630S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 630 mm stroke. It delivers 10053 N push force at 0.5 MPa and uses a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X630S, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants absent in the SI line, and Viton H seals can raise operating temps to 150 C.
Airtac SI160 Standard Cylinder SI160X630S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X630S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X630S |
| Bore size | Ø160 mm |
| Stroke | 630 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 SAI160X630S 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 SAI160X630S 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 SI160X630S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×630 | 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 SI160X630S Is Used
Heavy Stamp Pressing
Drives large stamping dies requiring 10053 N of push force at 0.5 MPa, utilizing the 630 mm stroke to fully clear the press bed for automated material loading.
Large Mold Clamping
Secures heavy industrial molds on machining centers. The 160 mm bore ensures rigid, high-force clamping, while the 50 mm adjustable cushions absorb end-of-stroke impacts.
Pallet Lift Gates
Actuates heavy-duty loading dock gates. The long 630 mm stroke accommodates high pallet stacks, and the G3/4 port delivers the necessary high-volume air flow.
Replacing the Airtac SI160 Standard Cylinder SI160X630S with the SAI160X630S
To replace the SI160X630S, order the SAI160X630S. Verify your ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/4 port thread (PT, G, or NPT), and the M36x2 rod thread. Because this -S model has a magnet, confirm your CS1-B/DS1-B legacy sensors or upgrade to current AirTAC switches for the SAI. Sizing both ways: a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push at 0.5 MPa. For this 630 mm stroke, use external guides to prevent rod bending and side-load damage. The air cushion (50 mm) only decelerates; it does not hold load. For dead-load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X630S
- ✓ 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 SI160X630S FAQ
Yes, the SI160X630S is discontinued. The direct replacement is the SAI160X630S. It shares the exact ISO 15552 mounting interface, 160 mm bore, 630 mm stroke, output force, G3/4 port, and mounting accessories, fitting directly into existing fixtures.
This double-acting cylinder delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and 18095 N push at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and it features a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X630S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X630S replacement — usually within 7-8 hours.