Balu India Crank Shafts Limited - Manufacturing & Assembling Services

The company has a complete integrated heat treatment infrastructure. The journals are induction hardened by inserting the coils around the journals & passing heat at 800C. The hardness of the journals is achieved to a depth of 5 mm. There is also a provision to fillet harden the journals as per customer requirement. We maintain an average hardness as per OEM specification of 56-62 HRC. The company has achieved 10 million cycles in crankshafts manufactured without any breakage on the same, tested & approved by ARAI(Automotive Research Association of India) which is a Government of India company.

Stress relieving is done by subjecting the crankshaft to a temperature of about 650 C (1202 F) for about one hour or till the whole part reaches the temperature. This temperature can be adjusted as per customer requirement This removes more than 90% of the internal stresses.