This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X250SLB, 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 SI160X250SLB
The AirTAC SI160 Standard Cylinder SI160X250SLB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X250SLB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X250SLB
- 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 SI160X250SLB
The AirTAC SI160X250SLB is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 250 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, an M36x2 rod thread, and LB foot mounting. AirTAC replaced this legacy unit with the SAI160X250SLB, a direct upgrade retaining the exact ISO 15552 mounting dimensions, bore, and output force.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL and BSAI lock variants absent in the original SI line.
Airtac SI160 Standard Cylinder SI160X250SLB Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X250SLB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X250SLB |
| Bore size | Ø160 mm |
| Stroke | 250 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 SAI160X250SLB 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 SAI160X250SLB 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 SI160X250SLB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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 SI160X250SLB Is Used
Heavy Stamping
Drives large presses and stamping dies requiring 10053 N push force at 0.5 MPa with stable LB foot mounting.
Automated Clamping
Secures large fabricated components during machining, utilizing the 50 mm adjustable air cushions for smooth stops.
Replacing the Airtac SI160 Standard Cylinder SI160X250SLB with the SAI160X250SLB
To replace the discontinued SI160X250SLB, order the SAI160X250SLB. Verify the ISO 15552 LB foot mounting interface, 250 mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. If you need more force than the 10053 N at 0.5 MPa, step up to a 200 mm bore; if less is required, a 125 mm bore provides 6136 N. Note that a plain cylinder drifts on air loss as the cushion only decelerates, so for load holding consider an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 250 mm stroke side-load risks are low, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X250SLB
- ✓ 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 SI160X250SLB FAQ
Yes, the AirTAC SI160X250SLB is discontinued. The direct replacement is the SAI160X250SLB. It shares the identical ISO 15552 mounting interface, 160 mm bore, 250 mm stroke, output force, G3/4 port, and LB foot mount, fitting directly into existing fixtures.
The 160 mm bore delivers 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 max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X250SLB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X250SLB replacement — usually within 7-8 hours.