The Heart of Crushing: Demystifying Motor Selection for the PE 250 x 400 Эрүүлийн тусламж

Дан 250 x 400 jaw crusher stands as a cornerstone in small to medium-scale crushing operations worldwide. Its robust construction, удирдах боломжтой хэмжээ, and proven effectiveness in handling hard and abrasive materials like granite, сагссах, бетон, and ore make it indispensable in quarries, уул уурхайн газар, recycling facilities, болон барилгын төслүүд. Гэхдээ, the consistent performance and longevity of this workhorse depend critically on a component often overshadowed by the crusher itself: the electric motor. Selecting the correct motor untuk jaw crusher PE 250 x 400 is not merely a box-ticking exercise; it’s fundamental engineering dictating efficiency, Нарслаг, үйл ажиллагааны зардал.

Understanding the PE 250 x 400 Workhorse

Before delving into motor specifics, appreciating the crusher's mechanics is crucial:

1. Гол үйл ажиллагаа: Utilizes two manganese steel jaws – one fixed and one movable – to compress incoming feed material against the fixed jaw until it fractures.
2. Анилга:
Тэжээх: 250мм (Өргөн) x 400mm (Уртын хэмжээ) - defining maximum lump size (~210mm).
Макс тэжээлийн хэмжээ: Approximately ≤210mm.
Нээлтийн хүрээнээс гарах: Typically adjustable between 20mm to 80mm (settings vary).
Хүчин чадал: Өндөр хувьсах чадвартай (5-20 цаг тутамд тонн), dependent on material properties (гэгүүэг, дур хэмжээ), Тэжээлийн хэмжээ тараах, манрах (Css), эрүүний хавтангийн профиль (жишээ нь e., corrugated vs. гөлгөр), and overall machine condition.
Bearcentrirosh Raver хурд: Around ~275 RPM (±10 RPM). This rotational speed drives the reciprocating motion of the movable jaw via toggle plates.
3. Бутлах мөчлөг & Load Profile:

The cycle involves an opening stroke (материал ордог газар) and a closing/power stroke (where crushing occurs).
Load is highly cyclical and shock-intensive. The motor experiences significant peak torque demands during:
Initial acceleration from standstill against inertia.
Crushing tough lumps or encountering non-crushables momentarily ("tramp events").
Overcoming friction in bearings and linkages.
Compressing material during the power stroke.

Why Motor Selection is Paramount

Choosing an undersized or inappropriate motor leads to catastrophic consequences: