This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50BX60SH, 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 SI50 Standard Cylinder SI50BX60SH
The AirTAC Airtac SI50 Standard Cylinder SI50BX60SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50BX60SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50BX60SH
- 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 SI50 Standard Cylinder SI50BX60SH
The AirTAC SI50BX60SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 50mm bore, 60mm stroke, and a SUS304 stainless steel rod. Delivering 982 N push force at 0.5 MPa, it is replaced by the SAI50BX60SH. This direct successor shares the exact ISO 15552 mounting interface, G1/4 port, and output force, fitting existing fixtures perfectly. The Viton H seal on this specific unit enables high-temperature operation up to 150 C.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL lock and SAIF valve variants.
Airtac SI50 Standard Cylinder SI50BX60SH Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50BX60SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50BX60SH |
| Bore size | Ø50 mm |
| Stroke | 60 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI50BX60SH carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAI50BX60SH produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI50 Standard Cylinder SI50BX60SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×60 | 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 SI50 Standard Cylinder SI50BX60SH Is Used
High-Temp Diverters
Actuating routing gates near ovens or heat zones where the Viton H seal and SUS304 rod endure ambient temperatures up to 150 C without degrading.
Stainless Rod Clamping
Applying 982 N of push force to secure medium workpieces in machining fixtures, utilizing the corrosion-resistant SUS304 rod for washdown environments.
Replacing the Airtac SI50 Standard Cylinder SI50BX60SH with the SAI50BX60SH
To replace the SI50BX60SH, order the SAI50BX60SH. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/4 air port, and the M16x1.5 rod thread. The 60mm stroke is well within standard limits, requiring no side-load concerns. If you need to scale force, the neighboring 40mm bore yields 628 N push at 0.5 MPa, while the 63mm bore provides 1559 N. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The -B SUS304 rod and -H Viton seal must be specified on the new order.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50BX60SH
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI50 Standard Cylinder SI50BX60SH FAQ
Yes, the SI50BX60SH is discontinued. The direct replacement is the SAI50BX60SH. It is dimensionally interchangeable per ISO 15552, retaining the same 50mm bore, 60mm stroke, G1/4 port, and mounting interface.
The G1/4 port is fixed by the 50mm bore. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N push at 0.9 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50BX60SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50BX60SH replacement — usually within 7-8 hours.