This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX135S, 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 SI160BX135S
The AirTAC SI160 Standard Cylinder SI160BX135S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 135mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX135S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke135 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX135S
- 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 SI160BX135S
The AirTAC SI160BX135S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 135 mm stroke. Delivering 10053 N push force at 0.5 MPa, it is superseded by the SAI160BX135S direct replacement. This upgrade shares the exact ISO 15552 mounting interface, G3/4 port, M36x2 rod thread and 50 mm cushions, fitting existing fixtures seamlessly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU includes a SUS304 stainless steel rod (-B) and a piston magnet (-S) for CS1-B/DS1-B sensors. Note that 135 mm is a nonstandard stroke.
Airtac SI160 Standard Cylinder SI160BX135S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX135S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX135S |
| Bore size | Ø160 mm |
| Stroke | 135 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 SAI160BX135S 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 SAI160BX135S 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 SI160BX135S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×135 | 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 SI160BX135S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 10053 N push force at 0.5 MPa with robust 50 mm cushions to absorb impact.
Automated Assembly Rig
Clamps large fabricated frames in automated welding cells, utilizing the G3/4 port for high-flow actuation.
Replacing the Airtac SI160 Standard Cylinder SI160BX135S with the SAI160BX135S
To replace the SI160BX135S, order the SAI160BX135S. Verify the ISO 15552 mounting accessory, G3/4 port, 135 mm stroke, and the -B SUS304 rod / -S magnet options. The SAI family also adds SAIL (air-released lock), SAIF (built-in 4M valve) and BSAI (clamp-lock) variants the SI lacked. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use SAIL, BSAI, or an external rod lock. If sizing up or down, neighboring bores are 125 mm and 200 mm. At 0.5 MPa, this 160 mm bore yields 10053 N push and 9425 N pull. Because the 135 mm stroke is nonstandard, confirm exact extended length. For any stroke over 300 mm, guide the load to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX135S
- ✓ 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 SI160BX135S FAQ
Yes, the SI160BX135S is discontinued. The direct replacement is the SAI160BX135S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 135 mm stroke, 10053 N force, G3/4 port, and mounting accessories.
This double-acting cylinder has a G3/4 air port. Theoretical forces are 10053 N push and 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX135S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX135S replacement — usually within 7-8 hours.