STOCKHOLM (Reuters) - North American heavy truck orders (Class 8) were for 13,100 units in June, the lowest figure since the third quarter of 2010, preliminary figures from ACT Research showed on Wednesday.

"Despite increasingly easy year-over-year comparisons, Class 8 vehicle orders continued to lose traction in June," Kenny Vieth, ACT's President and Senior Analyst, said in a statement.

(Reporting by Sven Nordenstam)