This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X470SLB, 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 SI50X470SLB
The AirTAC SI50 Standard Cylinder SI50X470SLB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 470mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X470SLB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke470 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X470SLB
- 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 SI50X470SLB
The AirTAC SI50X470SLB is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 470mm stroke. It delivers 982N push force at 0.5MPa via a G1/4 port. AirTAC replaced this legacy unit with the SAI50X470SLB, a direct sharing the identical mounting interface, bore, stroke, force, and LB foot mount.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI50 Standard Cylinder SI50X470SLB Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X470SLB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X470SLB |
| Bore size | Ø50 mm |
| Stroke | 470 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 SAI50X470SLB 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 SAI50X470SLB 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 SI50X470SLB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×470 | 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 SI50X470SLB Is Used
Material Diversion
Drives 470mm stroke diverters on packaging lines, utilizing the 982N push force to pivot heavy goods reliably without standard bore changes.
Vertical Lift Gates
Raises access gates using the 50kg safe vertical lift capacity, where the LB foot mount secures the body to the structural frame.
Long-Reach Clamping
Actuates 470mm clamping arms on large assemblies, requiring external guides to manage side-load and prevent rod bending.
Replacing the Airtac SI50 Standard Cylinder SI50X470SLB with the SAI50X470SLB
To replace the SI50X470SLB, specify the SAI50X470SLB. Verify the ISO 15552 LB foot mounting, G1/4 port, M16x1.5 rod thread, and the -S magnet for CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). Sizing both ways: a 63mm bore offers 1559N push at 0.5MPa, while a 40mm bore gives 628N. Note that at 470mm, side-load risks rod bending; use external guides to prevent premature wear. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X470SLB
- ✓ 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 SI50X470SLB FAQ
Yes, the SI50X470SLB is discontinued. The direct replacement is the SAI50X470SLB. It shares the identical ISO 15552 mounting interface, 50mm bore, 470mm stroke, G1/4 port, and LB foot mount, fitting directly into existing fixtures.
The 50mm bore features a G1/4 port. At 0.5MPa it provides 982N push and 825N pull force. At 0.7MPa push is 1374N, and at 0.9MPa it is 1767N. The theoretical maximum force is 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X470SLB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X470SLB replacement — usually within 7-8 hours.