Start with the four standard models and key dimensions to identify crushing teeth, roll shells, side and bottom liners, roll shafts, bearings, hydraulics and drive spares, then confirm materials and drawing numbers for an enquiry.
DRC performs primary crushing with a fixed roll and a hydraulically yielding floating roll. This page covers the models, dimensions, installation positions, material selection, drawing checks and enquiry information directly needed for spare identification.
Product size, capacity, toothed roll diameter, roll length, feed opening, adjustable gap and drive power come from the corresponding official FLS datasheets.
| Model | Product size | Capacity | Toothed roll diameter | Roll length | Feed opening | Adjustable crushing gap | Motor power |
|---|---|---|---|---|---|---|---|
| DRC 18-18 | 0–300 mm | 2,500–4,000 t/h | Approximately 1,800 mm | Approximately 1,800 mm | Approximately 1,700 × 1,850 mm | Approximately 200–350 mm | 2 × 250 kW |
| DRC 20-25 | 0–400 mm | 4,000–6,000 t/h | Approximately 2,000 mm | Approximately 2,500 mm | Approximately 2,500 × 2,200 mm | Approximately 200–400 mm | 2 × 450 kW |
| DRC 22-25 | 0–400 mm | 5,000–7,000 t/h | Approximately 2,300 mm | Approximately 2,500 mm | Approximately 2,500 × 2,600 mm | Approximately 250–450 mm | 2 × 650 kW |
| DRC 22-28 | 0–500 mm | 6,000–8,000 t/h | Approximately 2,300 mm | Approximately 2,800 mm | Approximately 2,900 × 3,100 mm | Approximately 250–450 mm | 2 × 650 kW |
Capacity depends on bulk density, strength, size distribution, moisture, target product size and actual gap. Confirm final spares against the full model, serial number, drawing number, drawing revision and installation dimensions.
Start with crushing teeth and roll shells, then review sidewall, bottom and cleaning positions. Each item links to the relevant part and material pages.
Crushing Teeth / Tooth Caps
Located around both rolls, these directly contact the feed. Check fixed or floating roll, tooth profile and height, pitch, layout, rotation direction, connections, actual gap and used-part wear profile.
Material and manufacturing checks:Select high-manganese steel, wear-resistant alloy steel, carbide-reinforced or composite wear solutions according to feed strength, impact, abrasion and target service life.
View Part التفاصيل →Roll Shell / Roller Sleeve
These form the wear-resistant outer surfaces and tooth seat foundations of the fixed and floating rolls. Check diameter, length, shaft bore or locking assembly interface, segmentation, locating structure, weight and dynamic balance.
Material and manufacturing checks:Use wear-resistant alloy steel or a combined structure confirmed by the original design. Confirm material, heat treatment, concentricity, radial runout and fit tolerances against drawings.
View Part التفاصيل →Side Liner / Side Plate
These protect roll ends and chamber sides, control material bypass and maintain working clearances. Check left/right side, plate shape, thickness, hole pattern, roll end clearance and adjacent liner overlaps.
Material and manufacturing checks:Confirm quenched and tempered wear plate, wear-resistant cast steel or bimetallic composite plate according to impact, sliding wear and plate thickness.
View Part التفاصيل →
Bottom Liner
These protect the frame and discharge area below the rolls. Check discharge direction, plate thickness, segment numbers, hole patterns, overlaps, blockage clearance and site replacement access.
Material and manufacturing checks:Confirm quenched and tempered wear plate, bimetallic composite plate or wear-resistant cast steel according to drop height, particle size and flow direction.
View Part التفاصيل →الكاشطة / المنظف Blade
Located near the roll surfaces, these limit wet, sticky material buildup. Check installation side, blade profile, roll clearance, length, brackets, wear allowance and adjustment range.
Material and manufacturing checks:Confirm wear plate, elastomers or combined scraper designs according to material adhesion, roll surface structure, temperature and impact.
View Part التفاصيل →Parts with the same name are not interchangeable by appearance across DRC models or between fixed and floating rolls. Check drawing number, fits, rotation direction, loads, materials and heat treatment.
Fixed and Floating Roll Shafts
The two shafts connect the fixed roll and hydraulically yielding floating roll respectively. Check shaft and journal diameters, roll body interfaces, keys/locking assemblies, bearing housing spacing, rotation direction, concentricity and dynamic balance.
Material and manufacturing checks:Confirm forged transmission alloy steel, heat treatment, journal accuracy and non-destructive testing against original drawings and loads.
View Part التفاصيل →
Bearing and غلاف المحمل
Bearings support fixed and floating rolls under crushing impact. Check bearing model, clearance, journals, housing bores, locating/floating end, seals, lubrication and temperature monitoring interfaces.
Material and manufacturing checks:Confirm rolling bearings, steel housings and seal materials separately according to radial load, impact, speed, temperature rise and lubrication conditions.
View Part التفاصيل →Hydraulic Relief and Gap Setting System
During overload or tramp metal entry, hydraulics allow the floating roll to yield and also adjust the working gap. Check cylinder bore, stroke, pressure, mounting trunnions, valve blocks, accumulators, ports and seals.
فحوصات المادة والتصنيع: أكِّد فولاذ الأسطوانة الهيدروليكية السبائكي والمعالجة السطحية وأختام NBR أو HNBR أو FKM أو البولي يوريثان وفقًا للضغط والسائل ودرجة الحرارة.
View Part التفاصيل →
Drive, علبة التروس and Coupling
FLS DRC can use direct or V-belt drives; published model datasheets show twin-motor configurations. Check motor power, speed ratio, rotation direction, shaft extension, couplings, pulleys and guards.
Material and manufacturing checks:Use transmission alloy steel for gears and shafts. Confirm couplings, V-belts and elastic elements according to torque, impact, speed, ambient temperature and original design.
View Part التفاصيل →Adjustment Wedge and Shim
These provide structural location, clearance compensation or assembly adjustment. Check installation position, thickness stack, taper, hole pattern, contact faces and relationship with hydraulic adjustment mechanisms.
Material and manufacturing checks:Use quenched and tempered alloy steel or the original specified material. Confirm thickness, flatness, hardness and surface treatment against drawings.
View Part التفاصيل →When submitting a number, include the full DRC model, serial number, fixed/floating roll, part name, installation position, drawings, used-part photos, critical dimensions, material and operating conditions.
Current official documents list DRC 18-18, 20-25, 22-25 and 22-28.
No. Also check the serial number, OEM drawing number, fixed/floating roll, tooth profile, pitch, layout, rotation direction, fastening structure, material and used-part wear records.
Provide the full model, serial number, fixed/floating roll, OEM/third-party number, drawings, used-part photos, critical dimensions, material and operating conditions. We use these to identify parts, assess materials, match manufacturing requirements, control quality and deliver finished components.
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