Crusher Plant Spare Parts — Wear Parts

General Makina supplies the full range of wear and spare parts for every brand of crusher, screen, feeder and conveyor plant: jaw plate, blow bar, mantle & concave, wear-resistant cast plates and liners, vibrating screen mesh, conveyor idlers, drum pulleys, belt rubber and motors. With over 45 years of industry experience, parts ship from stock with factory/site delivery and on-site installation or remote support.

Wear metallurgy — choosing the right alloy

Wear is driven by the free quartz/silica content (Bond abrasion index Ai) of the feed, not by Mohs hardness. The right alloy is the foundation of TCO:

• Austenitic manganese steel (Mn13/Mn18/Mn22, ASTM A128): work-hardens under impact, surface hardness rising from 200 to 550 HB. Ideal for jaw plates and cone/gyratory mantles under high impact, coarse feed and tramp iron (C&D recycling).
• High-chrome white cast iron (Cr ~15-25%, ~700-800 HB): the HSI blow bar standard for clean feed and high abrasion (limestone, asphalt). Being brittle, it can crack on coarse or tramp metal.
• Ceramic-reinforced MMC: service life about 2-3× that of high-chrome in abrasive duty.

TCO sales argument — the right metric is cost per ton

Wear parts are the main operating cost of a plant. The correct metric is not part price but cost per ton crushed. TCO = part price + replacement frequency + downtime + safety of heavy part changes. The wrong technology (high-chrome on abrasive rock) is consumed in hours. Fast supply from stock + site delivery + on-site installation minimize downtime and lower cost per ton.

Scope and supply

Material-specific recommendation

For limestone and clean abrasive feed use high-chrome; for coarse, high-impact rock such as granite/basalt use manganese/martensitic steel and consider ceramic; for metal-contaminated C&D recycling use manganese/martensitic (chrome is brittle, tramp-iron risk). Cross-brand parts are supplied for any make of crusher.