The Robust Performer: Unveiling the Power of the 250x1200 Jaw Crusher

В требовательном мире переработки полезных ископаемых, совокупное производство, и переработка строительных материалов, primary crushing remains the critical first step where raw materials meet mechanical force. Amongst the diverse range of crushing equipment available today – from gyratories to impactors – the jaw crusher stands as a time-tested workhorse renowned for its simplicity, надежность, and robust capability to handle hard rock efficiently. Within this category of machines, the Jaw Crusher 250x1200 occupies a significant niche as a versatile mid-range solution capable of tackling substantial feed sizes while delivering consistent output suitable for secondary processing or direct use in certain applications.

Understanding the Nomenclature: What Does 250x1200 Mean?

Обозначение "250x1200" directly refers to the dimensions of the crusher's feed opening. This crucial specification defines the maximum lump size that can be effectively introduced into the crushing chamber:

Ширина: 250 millimeters (мм) – This is the nominal distance between the fixed jaw plate's side liners at their widest point.
Длина/Зазор: 1200 mm – This represents the distance between the fixed jaw plate's top edge (where material enters) and its lowest point relative to where it meets the moving jaw at rest (the bottom edge). По сути, it dictates how large a piece of rock can be dropped vertically into the jaws.

Поэтому, a Jaw Crusher 250x1200 is engineered to accept feed lumps up to approximately 210-220 mm in width (slightly less than 250mm due to practical feeding angles) and potentially up to ~1100 mm in length/depth if oriented correctly upon entry.

Core Design Principles & Функциональность

Like all jaw crushers operating on Blake principles or variations thereof (like overhead eccentric designs), the fundamental action involves two opposing jaw plates:

1. Фиксированная челюстная пластина: Rigidly mounted onto the main frame.
2. Moving Jaw Plate: Mounted on an eccentric shaft assembly driven by powerful bearings.
3. Дробильная камера: The wedge-shaped cavity formed between these jaws.
4. Переключить систему: A critical component providing both leverage and safety overload protection.

The operating cycle is elegantly simple yet highly effective:

1. Впуск: Material enters from above through the feed opening.
2. Сжатие: При вращении эксцентрикового вала:
It pushes the moving jaw