This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID160X250S, 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 SID Series Double-Rod Cylinder SID160X250S
The AirTAC Airtac SID Series Double-Rod Cylinder SID160X250S 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 SAID160X250S, 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 → SAID160X250S
- 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 SID Series Double-Rod Cylinder SID160X250S
The AirTAC SID160X250S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force of 9425 N at 0.5 MPa. This discontinued model drops directly into the SAID160X250S, matching the 160mm bore, 250mm stroke, G3/4 port and M36x2 rod thread. The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Because both faces use the identical rod-side area, force is equal both ways (9425 N at 0.5 MPa, 13194 N at 0.7 MPa, 16964 N at 0.9 MPa). The second rod prevents rotation and can drive a second tool or carry a sensor cam. This -S variant includes a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SID Series Double-Rod Cylinder SID160X250S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID160X250S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID160X250S |
| 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 SAID160X250S 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 SAID160X250S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID160X250S
| 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 SID Series Double-Rod Cylinder SID160X250S Is Used
Dual-Station Press
Drives two opposing forming tools simultaneously from a single piston, utilising the equal push and pull force to maintain balanced pressure on both workpieces.
Transfer Pusher
Moves heavy pallets along a conveyor using the 160mm bore, relying on the second rod to prevent mechanical twist during high-speed lateral indexing.
Replacing the Airtac SID Series Double-Rod Cylinder SID160X250S with the SAID160X250S
To replace the discontinued SID160X250S, install the direct replacement SAID160X250S; it reuses the exact ISO 15552 mounting interface and FA, LB, or TC brackets without modifications. Size both directions by checking the equal force against neighbouring bores, ensuring the 9425 N @0.5 MPa rating fits your application. A double-rod design is correct when you need anti-rotation stability or dual-end actuation. The -S suffix ensures a built-in magnet for position sensing. For this 250mm stroke, side-load alignment is acceptable, but for any stroke over 300mm, verify guide tolerance to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID160X250S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID160X250S FAQ
Yes, the SID160X250S is discontinued. The direct replacement is the SAID160X250S, offering the same ISO 15552 interface, 160mm bore, 250mm stroke, G3/4 port and mounting dimensions, plus an upgraded piston seal.
Force is equal both ways at 9425 N @0.5 MPa, 13194 N @0.7 MPa, and 16964 N @0.9 MPa. Operating speed is 30-500 mm/s. Note that a plain cylinder does not hold loads on air loss; the 50mm adjustable cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAID160X250S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID160X250S replacement — usually within 7-8 hours.