This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X55TC, 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 SI32X55TC
The AirTAC SI32 Standard Air Cylinder SI32X55TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 55mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X55TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke55 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X55TC
- 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 SI32X55TC
The AirTAC SI32X55TC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 55mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32X55TC, which shares the identical TC trunnion mounting interface, bore, stroke, force and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For sensing, note this specific SI SKU lacks a magnet (-S) and cannot accept a CS1-B/DS1-B switch. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32X55TC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X55TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X55TC |
| Bore size | Ø32 mm |
| Stroke | 55 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 SAI32X55TC 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 SAI32X55TC 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 SI32X55TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 SI32X55TC Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture using the 402N push force at 0.5MPa.
Package Diverting
Provides reliable actuation for a TC-mounted diverting arm on a compact packaging line.
Clamp Actuation
Delivers precise 55mm stroke clamping for small workholding tasks without requiring a magnet.
Replacing the Airtac SI32 Standard Air Cylinder SI32X55TC with the SAI32X55TC
To replace the SI32X55TC, order the SAI32X55TC. Confirm the ISO 15552 TC trunnion mount, 32mm bore, 55mm stroke, G1/8 port (PT/G/NPT thread options) and the non-magnet requirement. Because this SKU has no magnet, it cannot hold a sensor. If you need position feedback, select an SAI32X55TCS with a magnet. Sizing both ways: the 32mm bore yields 402N push at 0.5MPa; dropping to a 20mm bore reduces force, while a 40mm bore increases it. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X55TC
- ✓ 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 SI32X55TC FAQ
Yes, the SI32X55TC is discontinued. The direct replacement is the SAI32X55TC. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 55mm stroke, 402N force, G1/8 port and TC trunnion mount.
The 32mm bore uses a G1/8 port. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X55TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X55TC replacement — usually within 7-8 hours.