This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X50H, 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 SI32X50H
The AirTAC SI32 Standard Air Cylinder SI32X50H 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 SAI32X50H, 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 → SAI32X50H
- 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 SI32X50H
The AirTAC SI32X50H is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 50 mm stroke. Designed for high-temperature environments, the -H seal option utilizes Viton FKM to operate up to 150 C. It delivers 402 N push force at 0.5 MPa through a G1/8 port. Because this SKU lacks a magnet, it cannot accept a position sensor.
You must replace this end-of-life unit with the SAI32X50H. The SAI family introduces an upgraded piston seal featuring two Y-shaped one-way elements for lower start-up pressure and longer life, while retaining the exact ISO 15552 mounting interface, M10x1.25 rod thread, and output force.
Airtac SI32 Standard Air Cylinder SI32X50H Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X50H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X50H |
| 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 SAI32X50H 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 SAI32X50H 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 SI32X50H
| 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 SI32X50H Is Used
High-Temp Gating
Actuating small diverter gates inside heated drying enclosures where the Viton H seal survives sustained 150 C ambient temperatures.
Lab Positioning
Driving short-stroke test fixtures and sample trays where the compact 32 mm profile barrel fits within strict spatial limits.
Replacing the Airtac SI32 Standard Air Cylinder SI32X50H with the SAI32X50H
To replace the SI32X50H, order the SAI32X50H and confirm the ISO 15552 mounting interface, 32 mm bore, 50 mm stroke, G1/8 port, and your specific mounting accessory (LB, FA, TC, etc.). Because this non-magnetic SKU cannot support a sensor, if position detection is required you must select an SAI equivalent with the S suffix for current AirTAC switches. When sizing, consider neighboring bores: a 40 mm bore offers 628 N push at 0.5 MPa, while dropping to a 25 mm bore reduces force. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X50H
- ✓ 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 SI32X50H FAQ
Yes, the AirTAC SI32X50H is discontinued. The direct replacement is the SAI32X50H. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 50 mm stroke, G1/8 port, and mounting interface, so it drops directly into existing fixtures.
This 32 mm bore cylinder uses a G1/8 air port and M10x1.25 rod thread. The thrust output is 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 of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X50H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X50H replacement — usually within 7-8 hours.