Name of the equipment: Four Ball Tester Make & Model: Magnum & TE-4B-L 144/2014 I-Stem Registration ID- 3224913 Category of Instrument Characterization Tool Types of Analysis / Testing Testing Application: Determining the Coefficient of Friction of lubricants.

Book through I-STEM: https://www.istem.gov.in/ Slot Booking Link I-STEM Slot Booking link for External User

Booking available for Internal and External Both Requisition form for Internals Externals

Faculty In-charge: Dr.Amit Kumar Singh Email ID: amitsingh@nitc.ac.in Phone number:  +91-8949362395

Technical Staff: Eldho P Varghese (TA SG II) epv@nitc.ac.in Shibin (Senior Technician) shibinr@nitc.ac.in

Department MED Office Email ID medoffice@nitc.ac.in Location Room No. 101 MSED Department Building Lab Phone No 0495-2286485

Description of Instrument:  This instrument is used to measure the Coefficient of Friction and Performance of lubricants by measuring the scar diameter.

Speed	100 to 2000 rpm
Normal Load	0.5 to 800kg
Leverage Ratio	13:1
Temperature	Up to 100 ͦ C

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Internal	External Academic Institutes	National R&D Lab	Industry
100/- per hour per sample (i.e. If the time taken to test a sample exceeds 1 hr then the user charge will be based on per hour)	500 + 18%GST per sample per hour (i.e. If the time taken to test a sample exceeds 1 hr then the user charge will be based on per hour)	500 + 18%GST per hour per sample (i.e. If the time taken to test a sample exceeds 1 hr then the user charge will be based on per hour)	1000 + 18%GST per hour per sample (i.e. If the time taken to test a sample exceeds 1 hr then the user charge will be based on per hour)