Defines a Form A center hole, 4 mm diameter, 10 mm total depth. 4. Importance in Modern Manufacturing
In the world of metalworking, precision starts before the cutting begins. GOST 14034-74 ("Centre Holes. Dimensions" / Отверстия центровые. Размеры ) is a foundational Soviet-era standard—still widely used across the CIS—that defines the standardized dimensions, forms, and technical requirements for centre holes in metal workpieces. These holes are crucial for locating and supporting shafts and components between centers on lathes and grinding machines. 1. Purpose of Centre Holes gost 14 304 83
Components machined at different times or locations will fit. Reliability: Reduced stress concentration at the centers. Defines a Form A center hole, 4 mm
Ensures that high-speed rotating parts remain stable. Conclusion GOST 14034-74 ("Centre Holes
(Note: If you were referring to a different standard, please provide the corrected number.) Could you please check if the number was perhaps: (Centre Holes)? GOST 9733.4-83 (Textile Colorfastness)? Another number entirely?
), which represents the diameter of the cylindrical lubrication hole part. Common diameters range from mm depending on the shaft size and type of machining.
