This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAI32BX650S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAI32BX650S in place of this model. 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 SI32BX650S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX650S 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 drop-in replacement is the SAI32BX650S, 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 → SAI32BX650S
About the Airtac SI32 Standard Air Cylinder SI32BX650S
The AirTAC SI32BX650S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 650mm stroke, and a SUS304 stainless steel piston rod. It delivers 402N push force at 0.5MPa. The exact drop-in replacement is the SAI32BX650S, matching the bore, stroke, G1/8 port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For this bore, safe working load is roughly 241N (about 60% of the 402N figure), equating to a 20kg vertical lift with a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This -S model has a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32BX650S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX650S |
| 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 SAI32BX650S 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 SAI32BX650S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX650S
| 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 SI32BX650S Is Used
Lab Automation
Ideal for corrosion-resistant actuation in scientific equipment, utilizing the SUS304 rod and 402N force for precise 650mm stroke movements.
Material Diverting
Handles long-stroke package sorting tasks on conveyors where a 20kg vertical lift capacity and 650mm extension are required.
Pneumatic Gates
Drives extended reach gating mechanisms, benefiting from the low start-up pressure of the SAI replacement seals in tight spaces.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX650S with the SAI32BX650S
To replace the SI32BX650S, order the SAI32BX650S. Confirm the ISO 15552 mounting interface, 650mm stroke, G1/8 port, and the -B SUS304 rod option. Because the stroke is 650mm, add an external guide to prevent rod bending and side loads. If you need more force, a 40mm bore yields 628N push at 0.5MPa. A plain cylinder drifts without air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX650S
- ✓ 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 SI32BX650S FAQ
Yes, the SI32BX650S is discontinued. The exact drop-in replacement is the SAI32BX650S. It is dimensionally interchangeable per ISO 15552, keeping the same 32mm bore, 650mm stroke, force, G1/8 port, and mounting interface.
The 32mm bore has a G1/8 port. It delivers 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. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
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