Most winches conform to U.S. SAE J706 STANDARD. 6.1 Maximum Rated Line Pull-Maximum rated line pull will be established as follows: 6.1.1 A load equal to twice the desired maximum rated line pull will be applied to the drum on the first layer at an effective distance form one flange of no more than five times the maximum recommended wire rope diameter. This load will be maintained while the winch is powered for at least one drum revolution at half of rated line speed. The direction of pull will be on a horizontal within ±15 degrees and perpendicular to the centerline of the winch drum within ±5 degrees. The test will then be repeated with a load equal to the desired rated line pull. Both tests will then be repeated on the opposite end of drum. From SAE J 706
WPT built a winch testing center at WPT POWER (Shanghai) Ltd. to verify our winch performance. The center simulates a real life application situation. It provides an excellent testing platform to ensure product quality, new product development, product improvement and quality customized design. Max test line pull :1,600KN (359,700Lbs). The height of tower: 16M (52 Feet). Effective enhance: 8M(26 Feet) Hydraulic power center: 100KW .Highest pressure: 25MPA (3626 Psi) .Transmission gear box efficienty testing standard: Maximum output torque:26000NM (19175 Llbf-ft) . Maximum input power: 90KW .
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