TOKYO, June 26 (Reuters) - Japan's Nikkei share average is expected to open lower on Tuesday on scepticism that this week's European summit will produce any significant progress to tackle the currency bloc's debt crisis.

The Nikkei was likely to trade between 8,600 and 8,750, strategists said, after Nikkei futures in Chicago closed at 8,640 on Monday, down 0.9 percent from the Osaka close of 8,720.

Orders from foreign brokers before Tuesday's open showed net sell orders of 6.0 million shares.

"Although the market had been supported by hopes on the EU summit, now there are growing worries, looking at developments in Europe," said Masayuki Doshida, senior market analyst at Rakuten Securities.

"Greece seems to be backpedalling on fiscal reform while (German Chancellor) Angela Merkel is opposed to the idea of joint euro bonds." A fifth euro zone country turned to Brussels for funding on Monday when Cyprus announced it was seeking a lifeline for its banks and its budget, hours after Spain submitted a formal request to bail out its banks. Doshida said the market would also watch the Japanese parliament's vote on consumption tax bills later in the day.

On Monday, the Nikkei eased 0.7 percent to 8,734.62, falling below its five-day moving average at 8,753.04, and the broader Topix index slipped 0.4 percent to 750.92.

The benchmark Nikkei has rallied 6 percent since hitting a six-month low on June 4, but is still down 13.4 percent in the quarter, hurt by concerns about the deepening euro zone sovereign debt crisis and slowing global growth.

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