Cuál es la diferencia entre barras de impacto de cromo y cerámicas?

Las barras de impacto de cromo ofrecen buen rendimiento general a menor coste. Las barras de impacto con insertos cerámicos utilizan insertos de alúmina-zirconia para lograr 2-3 veces más vida útil en aplicaciones abrasivas, aunque con un coste inicial mayor. El coste por tonelada total suele ser menor con las cerámicas.

Cómo sé cuándo reemplazar las barras de impacto?

Reemplace las barras de impacto cuando la profundidad de desgaste alcance los indicadores de reemplazo o cuando el rendimiento/calidad del producto disminuya notablemente. Las inspecciones regulares durante las paradas de mantenimiento ayudan a optimizar el momento del reemplazo.

Se pueden rotar las barras de impacto para extender su vida útil?

Sí, la mayoría de las barras de impacto se pueden rotar 180° cuando un lado está desgastado, duplicando efectivamente la vida útil. Algunos diseños permiten rotación en 4 posiciones. Consulte el diseño específico de su barra de impacto para conocer las opciones de rotación.

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Especificaciones clave

Material Grades: Mn14Cr2, Mn18Cr2, High-Chrome, AR400/450, CCO
Hardness Range: 200-500+ BHN (Mn) / 360-450 HB (AR) / 55-63 HRC (CCO)
Thickness Options: 20-80 mm standard, heavy-duty available
Mounting: Bolt-on (countersunk) or weld-on
OEM Brands: Metso, Sandvik, Terex, Kleemann, Hazemag, McCloskey
Standards: ASTM A128 (Mn), ASTM A532 (Cr), ASTM A514 (AR plate)

Key Features of ATF Side Liners

Position-Specific Design

Side liners profiled for specific mounting positions within the crusher housing. Correct profiles ensure proper material flow and chamber geometry.

Wear-Resistant Materials

Manganese steel for impact zones, high-chrome iron for abrasive areas, and AR plate for lower-wear positions. Material matched to wear mechanism.

Segmented Construction

Multi-piece designs that allow replacement of worn sections without removing entire liner sets. Reduces downtime and material costs.

Secure Mounting

Bolt-on designs with countersunk fasteners to prevent protrusion. Welded options available for specific applications.

Thickness Options

Standard and heavy-duty thickness options to match wear rates and maintenance intervals with your operational requirements.

Custom Profiles

Custom liner profiles available for modified crusher chambers or unusual wear patterns. Send drawings or worn liners for matching.

Side Liners

Side Liners: Housing Protection for HSI Crushers

Side liners protect the crusher housing walls from the abrasive action of material circulating inside the crushing chamber at velocities that can exceed 20 m/s. Without side liners, the cast or welded housing walls—typically manufactured from structural grade steel—would wear through in a matter of weeks, compromising structural integrity and creating serious safety hazards including material breakout. Side liners are sacrificial wear components manufactured from impact and abrasion-resistant alloys conforming to ASTM A128 (manganese steel), ASTM A532 (high-chrome iron), or ASTM A514 (AR plate) standards. Available in thicknesses from 20 mm to 80 mm depending on the position and crusher model, these liners absorb cumulative wear while protecting the expensive main frame casting that typically represents 15-25% of the total crusher value. Segmented designs allow targeted replacement of high-wear sections without removing the entire liner set.

Side liner wear patterns vary considerably by position within the crusher housing, with liners near the rotor discharge zone and in high-material-flow paths wearing 3-5 times faster than those in lower-velocity areas near the feed opening. This non-uniform wear creates an opportunity for cost optimization through position-specific material selection. Manganese steel (Mn14Cr2 or Mn18Cr2) is preferred for positions exposed to direct blow bar discharge where impact energy is sufficient to trigger work-hardening to 400-500+ BHN. High-chrome white iron or chromium carbide overlay (CCO) plates deliver superior performance in sliding abrasion zones where material moves along the housing wall without significant impact. AR400/AR450 plate offers a cost-effective solution for lower-wear secondary positions such as inlet chutes and outlet transition areas. Matching liner materials to the specific wear environment at each position can reduce total liner cost per tonne of throughput by 20-40% compared to uniform material selection.

OEM-Fit Dimensions

Multiple Alloy Options

ISO 9001 Certified

HSI crusher side liner panels in manganese steel manufactured by ATF

Bolt-on side liner panels protect the crusher housing from abrasive material flow — available in manganese, chrome and AR plate

OEM Compatibility

ATF manufactures side liners for all major HSI crusher brands. Liners are profiled to match original housing geometry.

Metso

NP1007, NP1110, NP1213, NP1315, NP1520
Lokotrack LT Series

Sandvik

CI411, CI511, CI711, CI821
QI240, QI340, QI440

Terex / Finlay

I-100, I-110, I-120, I-130, I-140
Trakpactor Series

Kleemann

MR 110, MR 130, MR 170

Hazemag

AP Series
APK Series

McCloskey

I34, I44, I54

Need Replacement Side Liners?

Send your crusher model and liner position for a quote with recommended materials.

Request a Quote

Material Options for Side Liners

Side liner material selection depends on the wear mechanism at each position. Impact-dominated zones benefit from manganese steel, while abrasion-dominated zones perform better with harder materials.

Side Liners and Housing Wear Plates for HSI Crushers — Comparación de materiales con clasificaciones de dureza, aplicaciones y características de rendimiento
Material	Dureza	Aplicación	Notas
Mn14Cr2 Manganese Steel	200-220 HB (work-hardens to 400+ HB)	Rotor area and high-impact zones, recycling applications	Excellent impact resistance, moderate abrasion life
Mn18Cr2 Manganese Steel	200-240 HB (work-hardens to 500+ HB)	Standard choice for most side liner positions	Balanced performance, good work-hardening
High-Chrome White Iron	60-64 HRC	Lower housing areas with high abrasion and low impact	Maximum abrasion resistance, avoid in impact zones
AR400/AR450 Plate	360-450 HB	Low-wear secondary positions, inlet and outlet chutes	Cost-effective for moderate wear areas
Chromium Carbide Overlay (CCO)	55-63 HRC surface	Extreme abrasion areas, sliding wear zones	Weld overlay on mild steel backing

Mn14Cr2 Manganese Steel

Dureza:200-220 HB (work-hardens to 400+ HB)

Aplicación:Rotor area and high-impact zones, recycling applications

Notas:Excellent impact resistance, moderate abrasion life

Mn18Cr2 Manganese Steel

Dureza:200-240 HB (work-hardens to 500+ HB)

Aplicación:Standard choice for most side liner positions

Notas:Balanced performance, good work-hardening

High-Chrome White Iron

Dureza:60-64 HRC

Aplicación:Lower housing areas with high abrasion and low impact

Notas:Maximum abrasion resistance, avoid in impact zones

AR400/AR450 Plate

Dureza:360-450 HB

Aplicación:Low-wear secondary positions, inlet and outlet chutes

Notas:Cost-effective for moderate wear areas

Chromium Carbide Overlay (CCO)

Dureza:55-63 HRC surface

Aplicación:Extreme abrasion areas, sliding wear zones

Notas:Weld overlay on mild steel backing

Note: Wear patterns vary significantly between crusher models and applications. Contact ATF for position-specific material recommendations.

Preguntas frecuentes

Side Liners Preguntas frecuentes

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How often should side liners be replaced?

Side liner replacement frequency varies substantially by position within the crusher housing, feed material characteristics, throughput rate, and liner material grade. High-wear positions near the rotor discharge zone may need replacement every 2-3 blow bar change intervals, which in continuous aggregate production typically translates to 800-2,000 operating hours for manganese liners processing abrasive material. Lower-wear areas near the feed inlet or upper housing may last 4-6 blow bar cycles or more. Establish baseline wear rates by measuring liner thickness at multiple points during each scheduled maintenance stop, using ultrasonic thickness gauges for accurate readings without removing the liners. Create a wear map showing thickness reduction rates per position to enable predictive replacement scheduling. Replace liners when residual thickness reaches 25-30% of original, or immediately if any section shows wear-through. Tracking position-specific wear rates also informs material grade optimization—positions wearing faster than the maintenance interval may benefit from upgrading to a harder alloy grade.

What is minimum acceptable liner thickness?

Minimum acceptable thickness depends on the specific liner design, mounting configuration, and position, but the general engineering guideline is to replace side liners when worn to 25-30% of original thickness. For a standard 50 mm manganese liner, this means replacement at approximately 12-15 mm residual thickness. Below this threshold, the liner lacks sufficient mass to absorb impact energy without transmitting damaging forces to the housing, and bolt heads may begin to protrude above the wear surface. Liners with bolt-on mounting using countersunk fasteners have a hard minimum set by the bolt head depth—typically 8-12 mm below the working surface. If any section shows impending wear-through or if the housing surface is visible through thin spots, the liner must be replaced immediately regardless of average thickness. Worn-through liners expose the structural housing to direct abrasive contact, and frame damage repair through field welding can cost 10-50 times more than a replacement liner set.

Can different materials be used for different positions?

Yes, and a mixed-material approach is often the most cost-effective strategy for optimizing side liner performance. Positions near the rotor and in the direct path of material ejected from blow bars experience high-energy impact combined with abrasion, making manganese steel (Mn18Cr2 per ASTM A128, work-hardening to 450-500+ BHN) the ideal choice due to its exceptional toughness under impact loading. Lower housing positions where material slides along the walls under gravity experience predominantly abrasive wear with minimal impact, and high-chrome white iron (ASTM A532, 60-64 HRC) or chromium carbide overlay (CCO, 55-63 HRC surface) delivers significantly longer wear life in these zones. Transition areas with mixed wear mechanisms can use AR400 or AR450 plate (360-450 HB) as a cost-effective middle ground. When implementing position-specific materials, maintain a liner map documenting which material grade is installed at each position and track wear rates individually. This data-driven approach enables continuous optimization of material selection and reduces total liner cost per tonne processed.

Can worn side liners be rebuilt?

Some operators apply hardfacing weld overlay to worn manganese or AR plate liners to extend their service life, and while this can be technically feasible for certain positions, it is generally not recommended for several important reasons. The base material in a heavily worn liner has been subjected to extensive work-hardening, thermal cycling, and potential micro-cracking that may compromise structural integrity. Weld deposits on manganese steel can cause carbide precipitation in the heat-affected zone, creating brittle areas prone to spalling. Additionally, rebuilt liners rarely match the original profile geometry, which can alter material flow patterns within the crushing chamber and create localized high-wear zones on adjacent components. For safety-critical positions near the rotor, replacement with new liners is always preferred. If economics require liner rebuilding for low-wear secondary positions, use a qualified wear-engineering shop experienced with manganese welding procedures (AWS D14.1 guidelines) and verify the rebuilt profile matches OEM drawings before installation.

Contenido técnico revisado por el equipo de ingeniería de ATF | Especificaciones metalúrgicas verificadas según normas ASTM/ISO

Get a Quote for Side Liners

Provide your crusher model and we will quote complete liner sets or individual positions.

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