This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X60SN, 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 SI50X60SN
The AirTAC Airtac SI50 Standard Cylinder SI50X60SN 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 SAI50X60SN, 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 → SAI50X60SN
- 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 SI50X60SN
The AirTAC SI50X60SN is a discontinued double-acting ISO 15552 profile cylinder featuring a 50mm bore and 60mm stroke. It delivers a thrust of 982 N at 0.5 MPa. AirTAC replaced this legacy unit with the SAI50X60SN, a direct upgrade retaining the exact ISO 15552 mounting interface, G1/4 port, and M16x1.5 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
This -SN configuration includes a piston magnet for legacy CS1-B/DS1-B switches and NBR seals rated for -20 to +70 C (a Viton H option extends this to 150 C). Note that standard cylinders drift without live air; for load holding, explore the SAIL or BSAI lock variants.
Airtac SI50 Standard Cylinder SI50X60SN Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X60SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X60SN |
| 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 SAI50X60SN 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 SAI50X60SN 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 SI50X60SN
| 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 SI50X60SN Is Used
Clamp Actuation
Ideal for mid-sized fixturing, delivering 982 N of push force at 0.5 MPa to secure workpieces during machining operations.
Package Diverting
Provides reliable 60mm stroke actuation for routing moderate-weight goods across material handling lines.
Replacing the Airtac SI50 Standard Cylinder SI50X60SN with the SAI50X60SN
To replace the SI50X60SN, order the SAI50X60SN. Confirm your ISO 15552 mounting fixtures (LB, FA, TC, etc.), the G1/4 air port, and the M16x1.5 rod thread. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), while the -N NBR seal suits standard temperatures. If you need more force, the neighbouring 63mm bore yields 1559 N push at 0.5 MPa; if less is required, the 40mm bore provides 628 N. Remember that a standard cylinder does not hold load without live air—the cushion only decelerates. For secure holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X60SN
- ✓ 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 SI50X60SN FAQ
Yes, the AirTAC SI50X60SN is discontinued. The direct replacement is the SAI50X60SN. It is dimensionally interchangeable per ISO 15552, offering the same 50mm bore, 60mm stroke, 982 N force, and G1/4 port, so it fits existing fixtures perfectly.
This 50mm bore double-acting cylinder features a G1/4 air port and M16x1.5 rod thread. The thrust ratings are: 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, 1767 N push at 0.9 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X60SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X60SN replacement — usually within 7-8 hours.