This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X50FTC, 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 SI32X50FTC
The AirTAC SI32 Standard Air Cylinder SI32X50FTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X50FTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X50FTC
- 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 SI32X50FTC
The AirTAC SI32X50FTC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 50mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, its direct replacement is the SAI32X50FTC, which shares identical mounting and output.
Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The broader SAI family also adds SAIL, SAIF and BSAI variants for locking and valve needs that the original SI line lacked.
Airtac SI32 Standard Air Cylinder SI32X50FTC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X50FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X50FTC |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAI32X50FTC 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 SAI32X50FTC 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 SI32X50FTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | 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 SI32 Standard Air Cylinder SI32X50FTC Is Used
Compact Part Ejection
Uses the 402N push force at 0.5MPa to eject small molded parts from a fixture without requiring bulky pneumatics.
Light Clamping Operations
Ideal for securing light components during machining, utilizing the 345N pull force and 50mm short stroke.
Package Diverting
Provides rapid sorting strokes on a line, operating at 30-800mm/s while fitting into tight ISO 15552 spaces.
Replacing the Airtac SI32 Standard Air Cylinder SI32X50FTC with the SAI32X50FTC
To replace the SI32X50FTC, order the SAI32X50FTC. Verify the ISO 15552 FTC trunnion mount, 50mm stroke, G1/8 port and M10x1.25 rod thread. Since this unit has no -S suffix, it cannot host a sensor; order a magnet-equipped SAI if position detection is needed. For sizing down, a 25mm bore offers less force; sizing up to 40mm yields 628N push at 0.5MPa. Remember that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X50FTC
- ✓ 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 SI32X50FTC FAQ
Yes, the AirTAC SI32X50FTC is discontinued. The direct replacement is the SAI32X50FTC. It is dimensionally interchangeable per ISO 15552, retaining the same FTC trunnion mount, 32mm bore, 50mm stroke, G1/8 port and force ratings.
The G1/8 port feeds a 12mm rod. Forces are: 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa. The adjustable cushion travel is 27mm.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X50FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X50FTC replacement — usually within 7-8 hours.