This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X1360, 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 SI50X1360
The AirTAC Airtac SI50 Standard Cylinder SI50X1360 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 1360mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X1360, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke1360 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X1360
- 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 SI50X1360
The AirTAC SI50X1360 is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 1360mm stroke. It delivers 982N push force at 0.5MPa via a G1/4 port. Because 1360mm exceeds the 1200mm standard maximum, this is a non-standard made-to-order stroke requiring external guidance to prevent rod bending. AirTAC replaced this legacy unit with the SAI50X1360.
The SAI50X1360 is a direct replacement retaining the exact ISO 15552 mounting interface, M16x1.5 thread, and 30mm cushions. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. Note this non-magnet SKU cannot take a sensor.
Airtac SI50 Standard Cylinder SI50X1360 Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X1360 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X1360 |
| Bore size | Ø50 mm |
| Stroke | 1360 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 SAI50X1360 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 SAI50X1360 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 SI50X1360
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×1360 | 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 SI50X1360 Is Used
Extended Transfer Pushing
Drives materials across wide conveyor spans using the full 1360mm reach, relying on external guide rails to absorb side loads during long-stroke package diversion.
High-Bay Shuttle Extraction
Extracts totes from deep storage racking where the 982N push force at 0.5MPa provides ample power to overcome bin friction in automated retrieval systems.
Replacing the Airtac SI50 Standard Cylinder SI50X1360 with the SAI50X1360
To replace the SI50X1360, order the SAI50X1360 direct equivalent, confirming the ISO 15552 interface, G1/4 port, and 30mm adjustable cushions. Since this 1360mm stroke exceeds the 1200mm standard, expect a made-to-order part and absolutely use an external guide to mitigate side-load and rod-bending risks on such a long span. For sizing alternatives, the neighbouring 40mm bore yields 628N push at 0.5MPa, while the 63mm bore yields 1559N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding specify an external pilot check valve, or select the SAIL or BSAI lock variants. This no-SKU lacks a magnet and cannot support CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X1360
- ✓ 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 SI50X1360 FAQ
Yes, the AirTAC SI50X1360 is discontinued. The direct replacement is the SAI50X1360. It shares the identical ISO 15552 mounting interface, 50mm bore, 1360mm stroke, 982N force, G1/4 port, and accessories, fitting directly into existing fixtures.
This double-acting cylinder uses a G1/4 air port and delivers 982N push / 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical maximum of 200kgf at 1.0MPa. The 1360mm stroke is non-standard (exceeding the 1200mm max) and requires external guiding.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X1360
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X1360 replacement — usually within 7-8 hours.