INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING ISSN (ONLINE): 2321-3051 Vol.3 Issue.3, March 2015. Pgs: 5-9 Chaitanya G Burande, Sanjaysingh Vijaysingh Patil 5 REVIEW ON OVERLOAD TORQUE LIMITER WITH ELECTROMECHANICAL CLUTCH FOR TIMER BELT SPINDLE DRIVE Chaitanya G Burande 1 , Sanjaysingh Vijaysingh Patil 2 1 PG Student, burandechaitanya5@gmail.com 2 Assistant Professor, sanjaysingh.patil@sinhgad.edu Author Correspondence: Sai Shilpa society, Bibvewadi, Pune. Abstract Positive clutches used to transmit power between coincident shafts. The positive Engagement between clutch element ensure 100% torque transmission but occasionally the output shaft may be subjected to sudden overload which May make driving motor or engine to stall, which will lead to burn out electric Motor. In extreme cases this overload will lead to breakage of drive elements or clutch itself. In order to avoid this damage, it is needed that the input and output shafts be disconnected in case of sudden overload. Torque limiter is overload safety devices which provide the reliable overload protection. Torque limiter is tamper proof. Generally whenever overload occurs in any shaft drive mechanism there is failure of following components possible- 1) Shaft / Coupling / Belt Drive 2) Machine shaft 3) Motor (Burning of electrical motor) Due to Overloading In any case this damage leads to Replacements of machine parts and Ultimately Replacement cost increases. To overcome all this problem available in machine element, Torque limiter will help us to avoid this damage. Keywords: Torque limiter, eletromechanical clutch, timer belt spindle drive. 1. Introduction Safety ball clutch are Overload Safety Devices with Torque Limiters which provide reliable overload protection. When a jam-up or excessive loading occurs the Safety ball clutch will reliably and quickly release to prevent system damage.  These torque limiters are tamper-proof. Once installed, the torque value cannot be changed. This is an important feature that ensures the integrity of the machine design. Costly and potentially risky calibration procedures are not necessary. The torque value is controlled by the part number that is ordered. That value determines what spring is used during the assembly at the factory.  The torque value can be changed in the field, however; the Safety ball clutch must be disassembled and the springs replaced to achieve the new torque value.  Standard Safety ball clutch are bidirectional. The torque value is the same regardless of rotation. If specified, these torque limiters can be configured at the factory to release at different torque ratings for different rotational directions.