In global stone crushing operations, cone crushers are widely utilized. The protective shields and liners are critical components of the entire crusher assembly, and liner replacement is a primary cause of machine downtime. Such downtime leads to the complete shutdown of the production line, resulting in significant financial losses. How, then, can we appropriately and correctly select the right liners?
1. Selection Based on Material Grade (Mn13/Mn18/Mn22):
Manganese content: 13%; Chromium content: 2%. Hardness: 200–240 HB; Hardness after work-hardening: 450–500 HB. Features high impact resistance, good toughness, and the lowest cost. Suitable for crushing soft ores such as limestone and dolomite.
Mn18Cr2 Liners
Manganese content: 18%; Chromium content: 2%. Hardness: 210–240 HB; Hardness after work-hardening: 500–550 HB. Features high impact resistance, excellent toughness, and moderate cost. Suitable for crushing granite, basalt, hard limestone, and gneiss, as well as for secondary and tertiary crushing applications.
Mn22Cr3 Liners
Manganese content: 22%; Chromium content: 3%. Hardness: 220–250 HB; Hardness after work-hardening: 550–580 HB. Features extremely high impact resistance and superior toughness, though at the highest cost. Suitable for primary crushing in mining operations and for severe working conditions involving high-hardness ores such as iron ore and copper ore.
2. Selection Based on Machine Series and Model (e.g., the HP500 model offers 6 standard configurations, each corresponding to a specific liner specification that is not interchangeable):
• EC (Extra Coarse) Cavity Type
Feed opening: 330 mm; Closed Side Setting (CSS) range: 38–76 mm. Produces coarse output material; suitable for primary crushing applications. • C Coarse Cavity Type
Feed opening: 275 mm; Discharge opening (CSS) range: 32–64 mm; Output: Coarse material; Suitable for primary/secondary crushing.
• M Medium Cavity Type
Feed opening: 210 mm; Discharge opening (CSS) range: 22–51 mm; Output: Medium material; Suitable for secondary/tertiary crushing.
• F Fine Cavity Type
Feed opening: 150 mm; Discharge opening (CSS) range: 16–38 mm; Output: Fine material; Suitable for tertiary crushing.
• EF Extra Fine Cavity Type
Feed opening: 90 mm; Discharge opening (CSS) range: 8–19 mm; Output: Suitable for manufactured sand production; Suitable for quaternary crushing.
• STD Standard Head Cavity Type
Feed opening: 210 mm; Discharge opening (CSS) range: 19–38 mm; Output: Medium material; Suitable for general secondary crushing applications.
The two types mentioned above represent the most common scenarios encountered when purchasing liners. Selection should be based on specific operating conditions and the crusher model in use. Choosing the appropriate liners can help enterprises increase production capacity and reduce operational costs. Providing high-quality wear-resistant liners and comprehensive solutions to our clients remains our company's steadfast mission. If you have requirements for wear-resistant spare parts for mining or cement applications, please do not hesitate to contact us; we offer 24-hour online support.
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