This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X1505, 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 SI50X1505
The AirTAC Airtac SI50 Standard Cylinder SI50X1505 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 1505mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X1505, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke1505 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X1505
- 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 SI50X1505
The AirTAC SI50X1505 is a discontinued double-acting ISO 15552 profile cylinder with a 50 mm bore and 1505 mm stroke. It delivers 982 N push force at 0.5 MPa via a G1/4 port. Because 1505 mm exceeds the 1200 mm standard maximum, it is a non-standard, made-to-order unit. The direct replacement is the SAI50X1505, which shares identical ISO 15552 mounting, bore, and force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Without a magnet (-S), this SKU cannot take a sensor. For load holding, the air cushion only decelerates; use a pilot check valve or the SAIL lock variant.
Airtac SI50 Standard Cylinder SI50X1505 Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X1505 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X1505 |
| Bore size | Ø50 mm |
| Stroke | 1505 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 SAI50X1505 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 SAI50X1505 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 SI50X1505
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×1505 | 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 SI50X1505 Is Used
Long-Stroke Material Transfer
Pushes workpieces between automated machining stations over extended 1505 mm distances, utilizing external guides to prevent rod bending during the traverse.
Automated Panel Handling
Indexes large sheet materials or panels into assembly fixtures, relying on the 982 N thrust class and adjustable end cushions to stop smoothly.
Replacing the Airtac SI50 Standard Cylinder SI50X1505 with the SAI50X1505
To replace the SI50X1505, order the SAI50X1505. Verify the ISO 15552 mounting interface, G1/4 port, M16x1.5 rod thread, and 30 mm cushions. Since this SKU lacks a magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. At 1505 mm, the stroke exceeds the 1200 mm standard maximum, making it non-standard. Due to this extreme length, use external guides to prevent rod bending and side-load damage. Sizing options: a 40 mm bore yields 628 N push at 0.5 MPa, while a 63 mm bore yields 1559 N. Note that a plain cylinder drifts on air loss; for secure holding, explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X1505
- ✓ 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 SI50X1505 FAQ
Yes, the AirTAC SI50X1505 is discontinued. The direct replacement is the SAI50X1505. It is dimensionally interchangeable per ISO 15552, retaining the same 50 mm bore, 1505 mm stroke, 982 N force, G1/4 port, and mounting interface.
The bore is 50 mm with a G1/4 air port. The thrust is 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. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X1505
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X1505 replacement — usually within 7-8 hours.