This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1550, 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 SI160X1550
The AirTAC SI160 Standard Cylinder SI160X1550 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1550mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1550, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1550
- 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 SI160X1550
The AirTAC SI160X1550 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 1550 mm stroke. It delivers a thrust of 10053 N at 0.5 MPa. AirTAC replaced this legacy unit with the SAI160X1550. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force, G3/4 port, and accessories, fitting existing fixtures perfectly. Because the 1550 mm stroke exceeds the 1500 mm standard maximum, this is a non-standard, made-to-order length.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Without a -S magnet, this specific SKU cannot accept a sensor. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use external rod locks or the SAIL/BSAI lock variants.
Airtac SI160 Standard Cylinder SI160X1550 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1550 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1550 |
| Bore size | Ø160 mm |
| Stroke | 1550 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 SAI160X1550 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 SAI160X1550 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 SI160X1550
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1550 | 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 SI160X1550 Is Used
Heavy Stamp Press Feed
Drives large material handling arms in metal stamping lines, utilizing the 10053 N push force to move heavy billets into the press bed over a 1550 mm reach.
Large Mold Lowering
Provides controlled vertical descent of heavy industrial molds, relying on the 50 mm adjustable air cushions to decelerate the 160 mm bore safely at stroke end.
Pallet Transfer Reject
Actuates a 1550 mm reject arm to divert heavy pallets off a main conveyor line, requiring external guides to manage the extended rod length under load.
Replacing the Airtac SI160 Standard Cylinder SI160X1550 with the SAI160X1550
To replace the discontinued SI160X1550, order the SAI160X1550. Confirm the ISO 15552 mounting interface, the 160 mm bore, the 1550 mm non-standard stroke, the G3/4 port, and your mounting accessory (LB, FA, CA, TC). Since this SKU lacks the -S magnet, it cannot take a CS1-B/DS1-B sensor; order a magnet-equipped version if position sensing is required. When sizing, neighboring bores offer different forces: the 125 mm bore pushes 6136 N, while the 200 mm bore pushes 15708 N at 0.5 MPa. The 1550 mm stroke demands an external guide to prevent rod bending and side-load damage. Finally, a plain cylinder does not hold load without live air; for secure holding, specify the SAIL or BSAI lock variant, or use a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1550
- ✓ 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 SI160X1550 FAQ
Yes, the SI160X1550 is discontinued. The direct replacement is the SAI160X1550. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 1550 mm stroke, G3/4 port, and mounting interface.
The 160 mm bore uses a G3/4 air port. It generates a push force of 10053 N and a pull force 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 force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1550
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1550 replacement — usually within 7-8 hours.