This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X650S, 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 SI32 Standard Air Cylinder SI32X650S
The AirTAC SI32 Standard Air Cylinder SI32X650S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 650mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X650S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke650 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X650S
- 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 SI32 Standard Air Cylinder SI32X650S
The AirTAC SI32X650S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 650 mm stroke. It delivers 402 N push force at 0.5 MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X650S, a direct upgrade retaining the exact same mounting interface, bore, stroke, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL, SAIF, and BSAI lock variants previously unavailable.
Airtac SI32 Standard Air Cylinder SI32X650S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X650S |
| Bore size | Ø32 mm |
| Stroke | 650 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 SAI32X650S 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 SAI32X650S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32X650S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×650 | 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 SI32 Standard Air Cylinder SI32X650S Is Used
Light-Part Ejection
Ideal for pushing lightweight molded parts off a conveyor belt over a 650 mm reach where low friction and moderate force are required.
Carton Diverting
Provides reliable lateral movement for small packaging cartons on sorting lines, utilizing the 32 mm bore's 402 N push capacity.
Lab Automation
Suitable for test fixture actuation needing a long 650 mm travel to position samples or tooling without consuming excessive space.
Replacing the Airtac SI32 Standard Air Cylinder SI32X650S with the SAI32X650S
To replace the SI32X650S, order the SAI32X650S and verify the ISO 15552 mounting interface, 32 mm bore, 650 mm stroke, G1/8 port, and your mounting accessory (LB, FA, TC, etc.). The -S suffix confirms the piston magnet is present for CS1-B/DS1-B switches. If you need more force, the neighboring 40 mm bore provides 628 N push at 0.5 MPa; if less force is acceptable, check your actual load. Because this is a 650 mm stroke, prevent rod bending and seal wear by guiding the load externally to avoid side-load forces. Note that a plain cylinder does not hold load on air loss; the air cushion only decelerates near stroke end. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X650S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32X650S FAQ
Yes, the AirTAC SI32X650S is discontinued. The direct replacement is the SAI32X650S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 650 mm stroke, G1/8 port, and mounting interface, so it fits existing fixtures directly.
This double-acting cylinder uses a G1/8 air port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical maximum force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X650S replacement — usually within 7-8 hours.