Abstract: A tester to estimate co-efficient of friction and determine other properties of a sample lubricant is disclosed. The tester includes a base structure mounted on a compound bearing and a ballpot located on the base structure. The ballpot carries at least three non-rotating balls. Further, the tester includes a bi-direction rotatable motor with a rotatable shaft having a rotating ball. In addition, the tester includes a loading system to load the non-rotating balls against the rotating ball. A load sensor connected to the loading system measures applied load. Furthermore, the tester includes at least one load cell provided in communication with the ballpot to provide at least one output signal. The output signal received from the load cell and the load sensor is recorded and processed in a data acquisition and control system.

Abstract: An apparatus 100 to estimate co-efficient of friction between a first sample member 103 and a second sample member 105 includes a housing 101, a measuring tip 104 extending from the housing 101. Further, the apparatus includes a multi-axis load sensor 107 disposed inside the housing 101 to measure components of load acting on the measuring tip 104. Further, the apparatus includes a motion and orientation measurement sensor 109 connected to the measuring tip 104 to measure components of acceleration and orientation of the measuring tip 104 with respect to a reference frame. Furthermore, the apparatus includes an output unit 111 to acquire, and process values from the multi-axis load sensor 107 and the motion and orientation measurement sensor 109 to estimate the co-efficient of friction.

Abstract: A tester to estimate co-efficient of friction and determine other properties of a sample lubricant is disclosed. The tester includes a base structure mounted on a compound bearing and a ballpot located on the base structure. The ballpot carries at least three non-rotating balls. Further, the tester includes a bi-direction rotatable motor with a rotatable shaft having a rotating ball. In addition, the tester includes a loading system to load the non-rotating balls against the rotating ball. A load sensor connected to the loading system measures applied load. Furthermore, the tester includes at least one load cell provided in communication with the ballpot to provide at least one output signal.

Abstract: An apparatus 100 to estimate co-efficient of friction between a first sample member 103 and a second sample member 105 includes a housing 101, a measuring tip 104 extending from the housing 101. Further, the apparatus includes a multi-axis load sensor 107 disposed inside the housing 101 to measure components of load acting on the measuring tip 104. Further, the apparatus includes a motion and orientation measurement sensor 109 connected to the measuring tip 104 to measure components of acceleration and orientation of the measuring tip 104 with respect to a reference frame. Furthermore, the apparatus includes an output unit 111 to acquire, and process values from the multi-axis load sensor 107 and the motion and orientation measurement sensor 109 to estimate the co-efficient of friction.