Rotary Log Cranes
The Endurance Log Crane product line is the evolution of over 40 years of research/development, manufacturing, installation and service knowledge gained throughout the industry. Endurance Equipment, LLC utilizes the most reliable mechanical and structural design available today.
125’/155′ and 170′ radius models are available in gross lift capacities of 20T/25T/45T and 60T. The 155′ and 170′ versions are offered with a traveling grapple for maximum under-crane storage capacities. The A-Frame and rail support system is set close to the pivot to allow for drive-thru truck unloading. The crane operators cab is located at a level so that an unobstructed view is provided of infeed chute slides, the stem/log storage area and processing equipment loading areas.
Endurance Cranes have the fastest cycle times available for a rotary type crane. A combination of high speed wheel drives, high speed hoist drives and a high reliability, low maintenance design make Endurance the leader in Rotary Log Crane performance. Flux Vector electronic drives produce environmentally friendly service while providing the operator with superior control of all functions.
The overall structural design of the crane utilizes wide flange shapes and tubing for a strong, appealing appearance. Connections are bolted and are designed for bearing loading as well as friction loading. Galvanized fasteners are used to reduce corrosion.
Independently adjustable wheel assemblies are direct coupled to planetary reducers through shock couplings. This reduces impact loading and provides a long drive life. All wheels are driven to eliminate slippage. Wheels are supported by Timken AP railroad bearings. Stearns brakes are standard on the wheel assemblies for failsafe operation.
The hoist unit is also driven by a direct coupled planetary reducer. Kobelt hydraulic failsafe brake assembly stops a failing load instantly in case of a power outage. 30″ diameter sheaves are standard, providing a long wire rope life. A four part line supports the lift block and grapple assembly. ‘Mack’ self contained grapples are standard.
Power is supplied to the grapple via a self-coiling 36 conductor supply cable. Access is provided to all serviceable areas. Sheaves are plumbed to the walkway area for ease of service. An oversized ‘Rotek’ bearing allows for ease of rotation. Power enters through a dual brush collector ring at the pivot. Electrical controls are housed inside a walk-in enclosure located at the base of the crane. Adequate lighting is provided for night operation.