The phrase "main factor limiting" is correct and usable in written English.
You can use it when describing a factor which is restricting something, either in terms of quantity or capability. For example, "The main factor limiting our growth is the lack of resources available."
"Corporations' cautious attitudes was the main factor limiting growth," Harumi Taguchi, principal economist at the research firm IHS, said in a note.
There is a significant and increasing body of scientific evidence, including government-commissioned research, data from satellite tagged birds and documented incidents of wildlife crime, to show that the relentless illegal killing of hen harriers on land managed for driven grouse shooting is the main factor limiting the species' population.
Dr. Barron, who works at Roosevelt Hospital on the West Side and sometimes responds to emergencies in the middle of the night, said the main factor limiting their options was that any new home "had to be close to Manhattan, no more than 30 minutes away".
However, interference is the main factor limiting the performance of wireless mobile sensor networks.
Nephrotoxicity is a side-effect and the main factor limiting the clinical use of cisplatin.
The rather poor fill factor is considered to be the main factor limiting the energy conversion efficiency.
Therefore, system construction cost is one of the main factors limiting CAES development.
However, poor cycling life and low capacity retention are main factors limiting their commercialization.
The ionospheric effect remains one of the main factors limiting the accuracy of Global Navigation Satellite Systems (GNSS) including Galileo.
TYLCV disease is thus one of the main factors limiting tomato-growing the Niayes agro-ecological area.
One of the main factors limiting their efficiency is the low light absorption and low charge carrier mobility of polymer absorbers.
