Definition -A Dummy Key is a non-load-bearing key placed in a keyway primarily to maintain balance, alignment, or symmetry of a rotating shaft. Its purpose is not to transmit torque but to fill unused keyways and prevent stress concentration or imbalance. Dummy keys are commonly used in high-speed rotating machinery, turbines, compressors, and precision equipment.

Sunmach offers custom-machined Dummy Keys made from high-performance Nickel Alloys and Stainless Steel. Manufactured strictly as per customer drawings, these keys adhere to precise dimensional tolerances. Engineered for severe operating conditions, they are ideal for critical industrial and rotating-equipment applications.

We are an ISO 9001:2015 certified company, demonstrating our commitment to rigorous quality standards and consistent product excellence to deliver the best of the Nickel Alloys & Stainless Steel Dummy Key.

We make these Dummy Key from a range of high-performance & exotic materials such as : Hastelloy® C-276, Hastelloy® C-22, Hastelloy® B-2, Monel® 400, Monel® K-500, Inconel® 600, Inconel® 625, Inconel® 718, Titanium Grade 2, Titanium Grade 5, Titanium Grade 7, Duplex S31803, Duplex S32205, Super Duplex S32750 to various Stainless Steel grades of SS 304L, SS 316L SS 310, SS 310H, SS 347H, etc followed by Special Stainless Steel Grades such as 904L Stainless Steel, UNS N08904, DIN EN1.4539 Nitronic® 50, Nitronic® 60, UNS S21800, DIN EN, 254 SMO, UNS S31254, DIN EN 1.454, Stainless Steel 410 & Stainless Steel 420 etc.

Sunmach’s extensive manufacturing capabilities and In-Stock Genuine & Authentic Raw Material availability allows us to support demanding industrial requirements with durable, corrosion-resistant, heat resistant & reliable Shafts made from Genuine Nickel Alloys and Stainless Steel Material, delivered dot in time to any corner of the world, supported by all required test certificates and with 100% traceability