Direct-drive winch NLA series

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Drums are sized according to ASME B30.7.2007 to provide a minimum pitch diameter of 18 times the nominal rope diameter. Air Motors Jeamar air motors are fully reversible vane type. Positive starting and precise control are central features of the motors, which have been designed for long life and low-cost operation. They can be stalled indefinitely under load without harm to the motors Control Valve Control valves feature proportional flow with spring return to neutral for “deadman” operation. Valves control the winch speed by varying air flow to the motor. With the control released, air flow is cut off, stopping the winch. Controls are supplied loose to allow for mounting that is appropriate to the application. Gear Reducers All Jeamar heavy duty lifting winches utilize high efficiency helical worm or worm reducers. Direct Drive A simple, direct-drive design increases the efficiency of the winch and eliminates drive chains or bull gears, to maximize power output. Any Position An open-base design permits mounting in horizontal or vertical positions. Loads can be pulled through the base itself, which is particularly useful in limited-space installations. Ball & Roller Bearings Throughout Friction load loss is reduced to a minimum through the use of ball and roller bearings. No bushings means higher efficiency and more power for pulling. Power In - Power Out For added safety, all winches are fully reversible. This gives the operator complete control of the winch load in both directions at all times. High Service Factors Jeamar winches are designed and manufactured for continuous, heavy-duty operation with a minimum service factor of 1 (one).