Identify models, principal dimensions, wear parts and drive spares for legacy and current ERC installations. FLS now carries this mining product line.
ERC combines a static grizzly and eccentric-roll primary crusher in a compact frame. This page covers models, dimensions, part positions, material links and enquiry requirements for spares; project capacity figures are not universal manufacturing specifications.
The table follows the five standard models in the thyssenkrupp ERC brochure. Capacity varies with material, feed grading and CSS. Manufacture requires full model, serial number and drawing revision.
| Standard model | Roll diameter / width | Feed opening and discharge setting | Installed power / reference weight |
|---|---|---|---|
| ERC 18-14 | Diameter 1800 mm / width 1400 mm | Feed opening 1000 mm; CSS 100–220 mm | 160–300 kW; approx. 83 t |
| ERC 22-20 | Diameter 2200 mm / width 2000 mm | Feed opening 1200 mm; CSS 120–260 mm | 300–450 kW; approx. 138 t |
| ERC 25-25 | Diameter 2500 mm / width 2500 mm | Feed opening 1280 mm; CSS 120–260 mm | 450–600 kW; approx. 185 t |
| ERC 25-30 | Diameter 2500 mm / width 3000 mm | Feed opening 1280 mm; CSS 140–300 mm | 500–700 kW; approx. 215 t |
| ERC 25-34 | Diameter 2500 mm / width 3400 mm | Feed opening 1280 mm; CSS 140–300 mm | 600–800 kW; approx. 240 t |
The first model-number group represents scaled roll diameter and the second scaled width. This helps preliminary identification but does not replace the nameplate or installation and part drawings.
Identify roll liners, segments, counter jaws, grizzly bars and side liners by impact and wear location. Each card links to the relevant component and material pages.
Roll Liner / Crushing Element
Mounted around the eccentric roll, these form the chamber with the counter jaw. Confirm diameter, width, segmentation, fixing interfaces and wear profile against the full ERC model and installed drawings.
Material selection: Screen manganese or wear-resistant alloy steel for heavy impact, compression and abrasion. Final material, hardness, heat treatment and NDT follow the original drawing and duty.
View the common part page →
جزء غلاف البكرة
Segments surround the roll. Eccentric motion and slow reverse rotation distribute wear around its circumference. Check segment count, circumferential position, fixing holes and adjacent interfaces together.
Material selection: Materials must combine impact toughness, surface wear resistance and fixing-zone strength. Assess solid alloy steel or local composite reinforcement.
View the common part page →Fixed Jaw / Counter Jaw
Opposite the roll, the jaw forms a continuous crushing gap. Its curvature, thickness, supports and hydraulic-setting interfaces depend on model and wear-compensation position.
Material selection: Assess manganese or wear-resistant alloy steel for large hard-rock impact, compression and sliding wear, then confirm drawing material, properties and heat treatment.
View the common part page →
Integrated Grizzly Bar
The static grizzly above the chamber bypasses fines. Confirm bar gaps, length, orientation, supports and replacement interfaces for the model and target feed grading.
Material selection: Impact and rubbing act on the working face. Assess wear plate, alloy steel or local hardfacing while controlling gaps and structural strength to the original drawing.
View the common part page →Side Liner / Cheek Plate
These protect chamber sides and adjacent housing. Similar appearance does not establish compatibility of profiles, thickness, countersunk holes, edge overlaps or left/right parts.
Material selection: Select wear plate or cast wear parts for lateral compression, flying-material erosion and edge wear; check machining and welding restrictions.
View the common part page →Feed / Discharge Area Liner
These cover feed impact points, bypass passages and discharge transitions. Confirm zones by feed direction, drop height, lump size, liner holes and downstream chute structure.
Material selection: Do not assume the same material for inlet impact and discharge sliding wear. Assess wear plate, rubber composites or local reinforcement by position.
View the common part page →Drive and support components are distinct from wear parts. Confirm eccentric shafts, bearings, bushes, hydraulic adjustment, pulleys and flywheels against interfaces and loads.
Eccentric Shaft Assembly
The eccentric shaft produces constant-stroke roll oscillation and is a primary load-bearing drive part. Confirm shaft diameter, eccentricity, fits, bearing seats and end connections together.
Material selection: Check shaft material, forging ratio, heat treatment, mechanical properties, ultrasonic inspection, surface quality and tolerances against the drawing and loads.
View the common part page →Roll Bearing & Bushing
These support the eccentric shaft and rotating roll under high radial load, impact and slow oscillation. Confirm type, clearance, bush dimensions, lubrication and seals from installation records.
Material selection: Buy rolling bearings to the original type. Select copper alloys or other drawing-specified bush materials for fits, loads, lubrication and temperature rise.
View the common part page →Hydraulic Gap Setting & Retraction
The system adjusts the jaw gap, compensates liner wear and retracts for uncrushable material. Confirm bore, stroke, trunnions, seals and pressure rating for the model.
Material selection: Confirm cylinders, rods, pins, seals and pipes separately against drawings, pressure and environment. Appearance alone does not prove interchangeability.
View the common part page →Pulley, Flywheel & V-Belt Drive
The OEM design uses a motor, V-belts and a high-inertia flywheel. Confirm diameters, grooves, taper bushes, bores, keyways, balance grade and guards from installed interfaces.
Material selection: Specify cast steel, ductile iron or alloy steel and inspections for torque, fatigue, dynamic balance and fits.
View the common part page →Jaw Support & Connection Parts
These connect the jaw, hydraulics and frame, affecting discharge setting and retraction. Check pins, lugs, bushes, fasteners and handedness together.
Material selection: Choose alloy or structural steel for strength, impact fatigue, hole/shaft fits and welding; critical parts require drawing-specified NDT.
View the common part page →No. Confirm serial number, liner segments, fixings, jaw configuration, wear-compensation position, drawing number and revision.
ERC originated in thyssenkrupp Mining Technologies, which joined FLS in 2022. Both legacy installation identity and current business succession must be retained.
Identification can start from the full model, serial number, installed drawings, worn-part photos, measurements and material/duty details. Traceable drawings and technical approval are required before manufacture.
Provide model, serial number, CSS, liner segmentation, drawing numbers, photos, dimensions, materials and duty. We coordinate identification, material assessment, manufacture, quality control and delivery.
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