Overview

Crawler cranes are a common site on construction sites.  What's new is their improved automation to ensure higher performance and operator safety.

To ensure higher performance, OEMs install absolute encoders, often on the winches for boom control and/or hook position.

The Challenge

Crawler cranes encoders are exposed to ferocious outdoor conditions.  The encoders are typically fully exposed to the environment.  Temperature swings occur daily, stressing encoder seals as the air inside the encoder tries to expand and contract.  Dirt, dust, and lubrication oil are everywhere.  Vibration and shocks are common both from crane travel as well as crane operation.

The Solution-Why Nidec-Avtron Absolute Encoders?

Nidec Avtron offers a full range of absolute encoders with special features to assist crawler crane OEMs and end-users:

For OEMs, the HS6M encoder offers cost-effective and space-saving durable designs.  The unique Wiegand wire technology enables multi-turn applications without the use of batteries, glass disks, or plastic gears.  All of the latest fieldbusses are supported, including those popular on mobile cranes, such as J1939, CANOpen, CANSafe, and Profibus DP. 

For end-users of crawler cranes, Nidec-Avtron can offer additional durability and performance using the HS40 absolute magnetic encoder.  Huge bearings and magnetic sensor systems assure maximum durability.  HS40 units can be used for retrofits in the field, replacing weaker models immediately.

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