UPDATE 2-Caterpillar cuts profit outlook as China sales slump

(Adds details in the China business)

Oct 23 (Reuters) - Industrial bellwether Caterpillar Inc fell short of Wall Street estimates for quarterly profit on Wednesday and cut its forecast for overall earnings in 2019, as it reported a 13% slide in Asia sales driven by weakening demand in China.

The results, the latest hint of the deepening fallout for companies of U.S.-China trade tensions and a broader slowdown in the world's second-largest economy, sent shares in the heavy machinery maker down 5% and underpinned a fall in Dow Jones Industrial futures.

Caterpillar said the slump in Asia was led by a 29% plunge in construction machines sales and noted it was struggling against growing local competition and the broader economic slowdown as well as retailers slashing inventory.

Chief Executive Officer Jim Umpleby said it expected end-user demand in the fourth quarter for its products to be flat. Total sales and revenue for the third quarter ended Sept. 30 fell 5.6% to $12.76 billion.

"Sales in Asia/Pacific were lower across most of the region primarily due to lower demand in China, including unfavorable changes in dealer inventories, amid continued competitive pressures," the company said.

Caterpillar sales have improved since it halted a four-year slide in 2016, but Wall Street analysts have also been warning demand in more than half of its end markets had peaked and Wednesday's numbers also showed sales in North America fell 3%.

The company is seen as one of Wall Street's clearer gauges of the state of Chinese demand, and its impact on big western multinationals.

It said the impact of the tariffs imposed on its goods as a result of President Donald Trump's trade war with Beijing would now be lower than the $250 million to $350 million range it gave earlier this year.

But it also cut its 2019 expectations for profit to between $10.90 and $11.40 per share, compared with a previous estimate of $12.06 to $13.06.

Profit attributable to common stockholders fell to $1.49 billion, or $2.66 per share, in the three months ended Sept. 30, from $1.73 billion, or $2.88 per share, a year earlier.

Analysts on average had expected Caterpillar to earn $2.88 per share, according to IBES data from Refinitiv. (Reporting by Rachit Vats and Ankit Ajmera in Bengaluru; Writing by Patrick Graham; Editing by Bernard Orr)