Drums are steel fabricated and designed to specific loading capacity. Drums are sized according to ASME B30.7.2007 to provide a minimum pitch diameter of 18 times the nominal rope diameter.
A simple, direct-drive design increases the efficiency of the winch and eliminates drive chains or bull gears to maximize power output.
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.
All Jeamar heavy duty lifting winches utilize high efficiency helical worm or worm reducers.
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 motor.
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.
HIGH SERVICE FACTORS
Jeamar winches are designed and manufactured for continuous, heavy-duty operation with a minimum service factor of 1 (one).
Standard on all heavy duty lifting winches, the air brake is a disc type that is activated automatically in the event of a power interruption. The brake will stop the winch and hold the load securely.
Important: Due to our policy of continuing development, all specifications are subject to change without notice. Users of these products are responsible for ensuring their suitability for the application in which they are being used.