This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX500H, 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 SI80 Standard Air Cylinder SI80BX500H
The AirTAC SI80 Standard Air Cylinder SI80BX500H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80BX500H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80BX500H
- 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 SI80 Standard Air Cylinder SI80BX500H
The AirTAC SI80BX500H is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 500mm stroke, Viton H high-temperature seals (0 to 150 C), and a SUS304 stainless steel rod. It delivers 2513 N push force at 0.5 MPa. The direct replacement is the SAI80BX500H, which matches the bore, stroke, 513 kgf max force, G3/8 port, and ISO 15552 mounting interface. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because this SKU lacks the -S magnet suffix, it cannot accept position sensors like the legacy CS1-B or DS1-B switches. Note that a standard cylinder does not hold loads without live air; the adjustable 36 mm cushions only decelerate the piston near stroke ends. For secure load holding, consider the SAIL or BSAI lock variants, or an external pilot check valve. Additionally, the 500 mm stroke requires external guides to prevent rod bending under side loads.
Airtac SI80 Standard Air Cylinder SI80BX500H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX500H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX500H |
| Bore size | Ø80 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI80BX500H carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80BX500H produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80BX500H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SI80 Standard Air Cylinder SI80BX500H Is Used
High-Temperature Forming
Ideal for pressing or lifting tasks near ovens, leveraging the Viton H seals (0-150 C) and SUS304 rod to withstand heat while delivering 2513 N push at 0.5 MPa.
Long-Stroke Diversion
The 500 mm stroke excels at pushing heavy pallets or products between parallel conveyor lines, provided external guides are used to manage side loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX500H with the SAI80BX500H
To replace the discontinued SI80BX500H, order the SAI80BX500H. Verify your ISO 15552 mounting fixtures (LB, FA, CA, TC, etc.), the G3/8 air port, and the M20x1.5 rod thread. This unit has a SUS304 stainless rod and Viton H seals for high-temperature environments (0 to 150 C). Since it has no -S magnet, you cannot mount reed or solid-state sensors; if sensing is needed, select an SAI equivalent with the S suffix. For sizing alternatives, a 63mm bore provides 2805 N push at 0.9 MPa, while a 100mm bore yields 3927 N at 0.5 MPa. Remember that a plain cylinder drifts without air pressure; for load holding, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve. Finally, at 500 mm stroke, use external guides to prevent rod bending and premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX500H
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80BX500H FAQ
Yes, the AirTAC SI80BX500H is discontinued. The direct replacement is the SAI80BX500H. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 500mm stroke, 513 kgf max force, G3/8 port, and mounting interface. The SAI simply upgrades the piston seal to two Y-shaped elements for lower start-up pressure.
This 80mm bore double-acting cylinder has a G3/8 air port and an M20x1.5 rod thread. The thrust outputs are: 2513 N push and 2268 N pull at 0.5 MPa; 3518 N push at 0.7 MPa; 4523 N push at 0.9 MPa; and a theoretical maximum of 513 kgf at 1.0 MPa. It operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
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