This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X400CA, 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 SI160X400CA
The AirTAC Airtac SI160 Standard Cylinder SI160X400CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 400mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X400CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X400CA
- 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 SI160X400CA
The AirTAC SI160X400CA is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 400 mm stroke. Designed for heavy-duty thrust (10053 N push at 0.5 MPa), it features a 40 mm carbon steel rod, M36x2 thread, and a G3/4 port. Because this legacy unit is end-of-life, you should order the SAI160X400CA direct replacement, which matches the original CA clevis mounting, output force, and ISO 15552 dimensions exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note that this specific SKU lacks a magnet (-S), so it cannot accept CS1-B or DS1-B sensors. If high-temperature operation is needed, a Viton H seal option extends the range to 0-150 C.
Airtac SI160 Standard Cylinder SI160X400CA Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X400CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X400CA |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAI160X400CA 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 SAI160X400CA 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 SI160X400CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SI160X400CA Is Used
Heavy Stamping Press
Drives large platens and dies requiring up to 18095 N of push force at 0.9 MPa, utilizing the CA clevis mount to handle severe angular loads.
Pallet Lift Gate
Lifts heavy loads vertically with a safe working capacity near 6032 N, relying on external guides to manage the 400 mm stroke without rod bending.
Industrial Clamp Station
Secures large fabricated components during machining, requiring a pilot-operated check valve to maintain clamping force if air pressure drops.
Replacing the Airtac SI160 Standard Cylinder SI160X400CA with the SAI160X400CA
To replace the discontinued SI160X400CA, order the SAI160X400CA. Verify that your existing fixture uses the ISO 15552 CA clevis mounting interface, the 160 mm bore, the 400 mm stroke, and the G3/4 port. When sizing, consider the neighboring 125 mm bore (6136 N push at 0.5 MPa) for lighter loads, or the 200 mm bore (15708 N push at 0.5 MPa) if more thrust is required. Because this is a 400 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder does not hold load without live air; the 50 mm adjustable cushion only decelerates the piston. For load holding on air loss, use an external rod lock, a pilot-operated check valve, or the SAIL or BSAI lock variant. This no-magnet SKU cannot support sensing.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X400CA
- ✓ 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 SI160X400CA FAQ
Yes, the SI160X400CA is discontinued. The direct replacement is the SAI160X400CA. It is a true ISO 15552 cylinder that matches the original bore, stroke, 10053 N force, G3/4 port, and CA clevis mounting dimensions, fitting directly into existing fixtures.
At 0.5 MPa, the push force is 10053 N and the pull force is 9425 N. At 0.7 MPa it pushes 14074 N, and at 0.9 MPa it pushes 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa. It operates at 30-500 mm/s, uses a G3/4 port, and has a 50 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X400CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X400CA replacement — usually within 7-8 hours.