This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX210, 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 SI160BX210
The AirTAC Airtac SI160 Standard Cylinder SI160BX210 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 SAI160BX210, 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 → SAI160BX210
- 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 SI160BX210
The AirTAC SI160BX210 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 210 mm stroke. It delivers 10053 N push force at 0.5 MPa. The direct replacement is the SAI160BX210, matching the ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU uses a SUS304 stainless steel rod (B option) and lacks a magnet, meaning it cannot accept position sensors.
The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the legacy line. Note that a plain cylinder drifts without live air; use an external rod lock or pilot check valve for load holding.
Airtac SI160 Standard Cylinder SI160BX210 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX210 |
| 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 SAI160BX210 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 SAI160BX210 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 SI160BX210
| 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 SI160BX210 Is Used
Heavy Press Clamping
Generates 14074 N at 0.7 MPa to secure large steel fabrications during machining or welding operations.
Injection Mould Handling
Shifts heavy mould tooling using the robust 40 mm SUS304 stainless rod, resisting corrosion in humid plant environments.
Replacing the Airtac SI160 Standard Cylinder SI160BX210 with the SAI160BX210
To replace the discontinued SI160BX210, order the SAI160BX210. Verify your ISO 15552 mounting interface, 160 mm bore, 210 mm stroke, G3/4 port, and M36x2 thread. This SKU has no magnet (-S omitted), so it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is required. The SUS304 stainless rod suits corrosive environments. Operating speed is 30-500 mm/s. If sizing up or down, neighbouring bores (125 mm / 200 mm) offer 6136 N / 15708 N push at 0.5 MPa. Because the 210 mm stroke exceeds 300 mm, ensure adequate guidance to prevent rod bending under side loads. For load holding on air loss, specify a SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX210
- ✓ 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 SI160BX210 FAQ
Yes, the SI160BX210 is discontinued. The direct replacement is the SAI160BX210. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 210 mm stroke, 10053 N force, G3/4 port, and mounting interface.
The G3/4 port bore delivers a push force of 10053 N and pull of 9425 N at 0.5 MPa. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX210 replacement — usually within 7-8 hours.