This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X50LB, 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 SI160X50LB
The AirTAC SI160 Standard Cylinder SI160X50LB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X50LB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X50LB
- 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 SI160X50LB
The AirTAC SI160X50LB is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 50 mm stroke. It delivers a push force of 10053 N at 0.5 MPa and features a G3/4 air port. AirTAC replaced this legacy unit with the SAI160X50LB, a direct replacement sharing the exact same ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this specific SKU lacks a magnet (-S) and cannot accept a CS1-B or DS1-B sensor.
Airtac SI160 Standard Cylinder SI160X50LB Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X50LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X50LB |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160X50LB 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 SAI160X50LB 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 SI160X50LB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160X50LB Is Used
Heavy Press Clamping
Applies the 10053 N push force at 0.5 MPa to secure large industrial molds or heavy fabrication assemblies during machining operations.
Pallet Lift Actuation
Drives robust lifting mechanisms in automated material handling, safely moving loads up to the 512 kg vertical lift threshold.
Stamping Press Feed
Handles the rugged 50 mm stroke ejection or feeding motions in heavy-duty metal forming lines using the LB foot mount.
Replacing the Airtac SI160 Standard Cylinder SI160X50LB with the SAI160X50LB
To replace the SI160X50LB, order the SAI160X50LB. Confirm the LB foot mounting interface, 160 mm bore, 50 mm stroke, M36x2 rod thread, and G3/4 port (PT/G/NPT options). Because this SKU has no magnet, it cannot hold a sensor; order a -S variant if position detection is needed. If sizing down, a 125 mm bore yields 6136 N push at 0.5 MPa; if sizing up, a 200 mm bore provides 15708 N. For load holding on air loss, note the air cushion only decelerates and does not brake—use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X50LB
- ✓ 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 SI160X50LB FAQ
Yes, the AirTAC SI160X50LB is discontinued. The direct replacement is the SAI160X50LB. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 50 mm stroke, LB foot mount, G3/4 port, and output force, so it fits existing fixtures.
This double-acting cylinder uses a G3/4 air port. The thrust is 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 theoretical maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X50LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X50LB replacement — usually within 7-8 hours.