IS 4654:1968 is the Indian Standard (BIS) for pan type concrete mixers - specification. This standard prescribes the requirements for pan type concrete mixers, covering their nominal sizes, capacities, material specifications, design features, and power units. It ensures the equipment is standardized for efficient and uniform mixing of concrete, particularly for stiff or semi-dry mixes used in precast industries.
Specifies requirements for pan type concrete mixers used for construction purposes.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Standard Nominal Capacities | Specifies a list of standard sizes: 50, 100, 200, 400, 500, 750, 1000 Litres. | No mandated sizes; the manufacturer declares the rated capacity (input) and rated output (yield). | ISO 18650-1:2018 |
| Mixing Pan Shell Thickness | Prescribes minimum thickness based on capacity (e.g., 400L mixer: 8mm bottom, 6mm side). | Not specified; design must ensure durability and safety without prescriptive dimensions. | ISO 18650-1:2018 |
| Safety Guarding | Vague requirement for 'suitable guards for all moving parts'. | Mandates interlocking guards for pan lid/grate that stop the mixer when opened; specifies safety distances per EN ISO 13857. | BS EN 12151:2007 |
| Water Dosing Accuracy | Water tank scale accuracy must be within ±2% of the tank's total capacity. | Batching system accuracy for water should be within ±1% of the required target quantity for the batch. | EN 206 (Referenced by mixing plant standards) |
| Mixing Blade Material | Specifies 'abrasion resisting steel, such as high-carbon steel or cast manganese steel'. | Performance-based, typically requiring wear-resistant materials with a specified minimum hardness (e.g., >500 HBW) or specific alloys. | Common industry practice based on EN/ISO |
| Marking (Information Plate) | Requires name, type, serial no., capacity, recommended mixing speed. | Adds year of manufacture, machine mass, rated power, and mandatory conformity markings (e.g., CE mark in Europe). | BS EN 12151:2007 |