This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID32X250S, 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 SID32X250S
The AirTAC Airtac SID Series Double-Rod Cylinder SID32X250S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID32X250S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAID32X250S
- 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 SID32X250S
The AirTAC SID32X250S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. This discontinued model drops directly into existing mounts via its G1/8 ports, with the exact SAID32X250S serving as the replacement. The SAI upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life, while adding SAIL and BSAI lock variants the SI line lacked.
Because both faces use the rod-side area, the back rod can carry a sensor cam for the built-in -S magnet (legacy CS1-B/DS1-B switches) or drive two tools simultaneously with anti-rotation stability. Note that air cushions only decelerate near stroke end; a plain cylinder drifts on air loss, so use an external rod lock or check valve for held loads.
Airtac SID Series Double-Rod Cylinder SID32X250S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID32X250S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID32X250S |
| Bore size | Ø32 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID32X250S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAID32X250S 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 SID32X250S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | 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 SID32X250S Is Used
Dual-Tool Transfer
Drives two opposing end-effectors simultaneously with equal 345 N @0.5 MPa force, using the second rod to carry a tool without requiring a separate cylinder.
Anti-Rotation Guiding
The twin-rod architecture prevents piston rotation during travel, ideal for grippers or pick-and-place heads needing precise angular stability without external guides.
Dual-End Sensing
The rear rod carries a sensor cam for the -S magnet, allowing position confirmation from both ends while the front rod performs the primary work.
Replacing the Airtac SID Series Double-Rod Cylinder SID32X250S with the SAID32X250S
To replace the discontinued SID32X250S, install the SAID32X250S—it matches the 32mm bore, 250mm stroke, 12mm rod, M10x1.25 thread, and ISO 15552 mounting interface (Basic, FA, LB, TC). Size both ways by confirming the equal 345 N @0.5 MPa force fits your load; if more force is needed, step up to the 40mm bore. A double rod is right when you need equal push/pull force, anti-rotation stability, or a rear sensor cam. For strokes >=300mm, verify side-load limits. Choose the -S magnet for CS1-B/DS1-B switches, and remember cushions only decelerate; they do not hold loads without live air.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID32X250S
- ✓ 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 SID32X250S FAQ
Yes, the SID32X250S is discontinued. The direct replacement is the SAID32X250S, sharing the same ISO 15552 interface, 32mm bore, 250mm stroke, G1/8 port, and equal both-ways force. The SAI upgrade uses an improved two Y-shaped one-way piston seal for longer life.
Force is equal both ways at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Operating pressure is 0.15-1.0 MPa. Speed is 30-800 mm/s. The G1/8 port, 12mm rod, and 27mm adjustable cushions are fixed by the 32mm bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAID32X250S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID32X250S replacement — usually within 7-8 hours.