CNC Machining for Mining Industry
The mining industry runs on heavy machines, harsh environments, and strict uptime requirements. When one component fails, an entire mining line can stop. That is why more buyers in mining are turning to CNC machining to secure reliable, repeatable parts that match the demands of modern mining equipment.
Main production parts for mining
Structural components for mining equipment
Typical CNC-machined mining components include:
Loader and excavator brackets, lugs, and mounting blocks
Chassis plates and frame connectors for surface mining machines
Boom, arm, and link components for underground mining equipment
Bases and housings for crushers, screens, and conveyors in mining plants
Wear parts in mining
Wear parts are core to every mining operation. They see constant impact from rock and ore:
Bucket edges, adapters, and shrouds for mining buckets
Wear plates and liners for chutes and hoppers in mining facilities
Bushings, pins, and bearing blocks for articulated mining joints
Guide plates and impact bars in conveyor systems for mining
Precision components in mining systems
Structural components for mining equipment
Typical CNC-machined mining components include:
Loader and excavator brackets, lugs, and mounting blocks
Chassis plates and frame connectors for surface mining machines
Boom, arm, and link components for underground mining equipment
Bases and housings for crushers, screens, and conveyors in mining plants
Wear parts in mining
Wear parts are core to every mining operation. They see constant impact from rock and ore:
Bucket edges, adapters, and shrouds for mining buckets
Wear plates and liners for chutes and hoppers in mining facilities
Bushings, pins, and bearing blocks for articulated mining joints
Guide plates and impact bars in conveyor systems for mining
Materials for mining components
Standard materials for mining
Common materials for mining cnc parts include:
Carbon steel (e.g. 1018, 1045) for structural mining brackets and plates
Alloy steel (e.g. 4140) for shafts and pins in mining equipment
Mild steel plate for frames and fabricated mining structures
Ductile iron for robust mining housings and covers
High-end and wear-resistant materials
For the most demanding mining conditions, higher-grade materials are often used:
Wear-resistant steels for liners and wear plates in mining chutes and buckets
High-strength alloy steels for drill components and heavy mining shafts
Stainless steels for corrosive mining fluids, wash plants, and chemical dosing
Bronze and brass for bushings and sliding parts in dusty mining environments
Nickel-based or heat-resistant alloys in high-temperature zones of mining processing
Metal cnc material type:
Aluminum
Aluminum is the most commonly used precision-machined component. It has a low density, a hard texture, and a soft material. Thanks to its corrosion resistance, it is widely used in aerospace, bionic bones, and automotive parts manufacturing.
Color : Silver.
Types : Aluminum 6061、7075、2024、5052、6063 and MIC-6.
Surface finish : Polishing, Brushing, Sandblasting, Chrome Plating, Anodizing, Electroplating, Powder Coating, Laser Etching.
Delivery time : 1-5 days.
Plastic cnc material type:
ABS
Combining the rigidity of acrylonitrile, the toughness of butadiene, and the processability of styrene, it offers excellent impact resistance (maintaining toughness even at low temperatures) with a balanced hardness and rigidity. Suitable for precision components subjected to moderate loads, it is ideal for manufacturing precision parts such as electronic and electrical enclosures, automotive ducting, interior trim components, and exterior trim components.
Color : Beige,black.
Types : General-purpose, flame-retardant, heat-resistant, high-impact-resistant, transparent (MBS), filled modified, alloyed, functionalized ABS.
Surface finish :Spray coating, electroplating, screen printing, laser engraving, hot stamping, vacuum coating, water transfer printing, sandblasting, anti-fingerprint coating.
Delivery time : 1-5 days.
PVC
Rigid PVC: Density approximately 1.35 g/cm³, high mechanical strength, tensile strength up to 34.5–49 MPa, elongation 20–40%, strong resistance to acids, alkalis, and oils, aging resistant, suitable for chemical and corrosive environments.
Color : White,Beige,black.
Types : Rigid PVC and Flexible PVC.
Surface finish : Painting and plating, polishing, sanding
Delivery time : 1-5 days.
POM
High tensile strength and low friction coefficient, excellent dimensional stability, easy machinability, can replace metal as raw material for wear-resistant components such as gears and bearings, widely used in automotive industry, industrial machinery,medical tools, etc.
Color : white,black,blue,yellow,etc.
Types : POM-H, POM-C.
Surface finish : Polishing, sandblasting, chemical polishing, laser polishing, anodizing/painting.
Delivery time : 1-5 days.
PTFE
PTFE is a high-performance engineering plastic with an extremely low friction coefficient, excellent chemical resistance, and outstanding electrical insulation. It remains stable across a wide temperature range and resists nearly all chemicals, solvents, and acids, making it ideal for precision parts such as seals, gaskets, bushings, insulators, and low-friction wear components used in chemical, medical, electronics, food, and aerospace industries.
Color : White, natural, black, filled or custom-colored.
Types : Virgin PTFE，Glass-filled PTFE，Carbon-filled PTFE，Bronze-filled PTFE，Modified PTFE
Surface finish : Machining finish, polishing, texturing, coating, engraving, anti-static treatment.
Delivery time : 1-5 days.
PMMA
With a light transmittance as high as 92%, it is hailed as “plastic crystal,” serving as material for optical components such as lenses and light guides. Its optical uniformity surpasses that of ordinary glass, while weighing only half as much. It offers easy machinability, moderate thermal stability, low shrinkage, and impact resistance. Primarily used in consumer electronics industries for display protective covers, lenses, and mobile phone frames.
Color : clear,white,black,colored.
Types : General-purpose / Impact-resistant / Heat-resistant / Pearlescent.
Surface finish : Polishing, enhanced coating, sandblasting for texture, printing for coloring, anti-scratch and anti-fingerprint treatments.
Delivery time : 1-5 days.
PC
High-performance thermoplastic with high toughness (low-temp resilient) and rigidity, ideal for CNC precision machining (cutting, drilling). Lighter than acrylic, it offers strong creep resistance and high-frequency insulation, suited for stress-resistant, insulated components. Eco-friendly via recycling by melting, used in electronics casings, spectrometer mounts, heat sinks.
Color : white or black.
Types : General Machinable/Flame Retardant/Reinforced/Blended PC.
Surface finish : Polishing, Hardening, Spraying, Laser Engraving, Electroplating, Hot Stamping.
Delivery time : 1-5 days.
FR4
FR4 is a glass-fiber-reinforced epoxy laminate with high mechanical strength, excellent electrical insulation, and strong dimensional stability. It offers good machinability, low moisture absorption, and reliable performance under mechanical load and elevated temperatures, and is commonly used for structural and insulating components such as electrical insulators, spacers, terminal blocks, mounting plates, fixtures, brackets, and support panels.
Color : Yellow, green, black, white, natural
Types : Standard FR4 / High-Tg FR4 / Halogen-free FR4
Surface finish : Machining finish, polishing, sandblasting, coating, painting, laser marking
Delivery time : 1–5 days
PA
PA (Polyamide, Nylon) exhibits tensile strength ranging from 62 to 85 MPa, low friction coefficient, and excellent heat resistance. Primarily used in high-load structural components such as gears and bearings, it facilitates the manufacturing of automotive parts, consumer electronics, and industrial machinery components.
Color : Colored.
Types : PA6, PA66, PA6T, PA9T.
Surface finish :Mechanical grinding, acid/alkali etching, hydrolysis technology, coating.
Delivery time : 1-5 days.
PE
PE (Polyethylene) is a thermoplastic material with a low melting point. During machining, tool temperature must be controlled to prevent adhesion, resulting in a smooth, burr-free surface. Its low friction and self-lubricating properties make it suitable for sliding/rotating components. It resists most acids, alkalis, salts, and organic solvents but is soluble in aromatic hydrocarbons and halogenated hydrocarbons. Common applications include food containers, trash bins, and toys.
Color : black,white,colored.
Types : LDPE, HDPE, UHMWPE, PEX, PEX-A, PEX-B.
Surface finish :Polishing, sandblasting, coating, etching.
Delivery time : 1-5 days.
PEEK
PEEK (Polyetheretherketone) is a semi-crystalline specialty engineering plastic characterized by high strength, high melting point, and low friction coefficient. It offers excellent chemical resistance and is suitable for aerospace structural components, high-temperature parts, and medical devices such as endoscopes and handles.
Color : Beige,black.
Types : CF-PEEK, GF-PEEK, PEEK with carbon black/ceramic/PTFE/graphite fillers.
Surface finish :Sandblasting, polishing, metal coating, polymer coating.
Delivery time : 1-5 days.
PP
PP (Polypropylene) is a semi-crystalline thermoplastic with a melting point of approximately 130-160°C. It exhibits excellent processing flow properties. During CNC machining, temperature control is essential (recommended range: 200-230°C). It is suitable for repeated bending operations. Tool selection must align with the material’s characteristics. Primarily used for containers, connectors, and structural components.
Color : black,white,colored.
Types : PP-H, PP-B, PP-R, HIPP.
Surface finish :Polishing, Sandblasting, Coating.
Delivery time : 1-5 days.
HDPE
HDPE (High-Density Polyethylene) is a linear thermoplastic with excellent impact resistance and dimensional stability.Non-toxic and odorless, it is suitable for manufacturing valves, pump bodies, gears, sliding bearings, and as core material for surfboards.
Color : black,white.
Types : HI-HDPE, UV-HDPE, UHMWPE, Carbon Black-Filled HDPE.
Surface finish :Polishing, Sandblasting, Coating.
Delivery time : 1-5 days.
HIPS
HIPS is a non-crystalline thermoplastic containing 5-15% rubber content, offering both high impact resistance and ease of processing. It features moderate surface hardness, low moisture absorption (0.05-0.7%), low cost, and suitability for complex structures. Widely used in appliance housings, food packaging, automotive interiors, and industrial piping, it replaces metal to meet lightweight and impact-resistant requirements.
Color : black.
Types : Impact-resistant HIPS, Brominated flame-retardant HIPS, Glass-fiber reinforced HIPS.
Surface finish :Polishing ，Sandblasting ，Coating.
Delivery time : 1-5 days.
Stainless steel
Stainless steel offers strong corrosion resistance and a smooth, easy-to-clean surface. It is primarily used in kitchen equipment components, medical devices, building materials and construction, as well as automotive parts.
Color : Silver.
Types : Stainless steel 304/316/201/202/430/444/410/420/440c/2205/2507/17-4ph/17-7ph.
Surface finish : Polishing, Brushing, Sandblasting, Electroplating, Spraying, PVD (Physical Vapor Deposition), Passivation, Pickling, Coloring.
Delivery time : 2-5 days.
Copper
Possesses electrical conductivity, tensile ductility, and antimicrobial properties, primarily used for processing into crafts, decorative items, and medical equipment.
Color :Orange,yellow.
Types : copper H59/H62/Hpb59-1/C36000/HAI77-2/HSN62-1/HPb/HMn/HAl/HSn/HNi.
Surface finish : Passivation, Electroplating, Chemical Plating, Shot Peening, Sandblasting, Chemical Film Treatment, Polishing, Bright Cleaning.
Delivery time : 1-5 days.
Bronze
Bronze is an alloy of copper and tin （possibly including lead, zinc, and phosphorus），low melting point (800-900°C) and excellent fluidity, along with corrosion resistance. Low-tin bronze exhibits a golden yellow hue, while high-tin bronze appears grayish-white or silver-gray. It is primarily used in mechanical manufacturing for sculptures, bearings, gears, valves, as well as in marine engineering components such as propellers, as well as marine engineering components like hull fittings and water pumps.
Color : gold/brown.
Types : Tin bronze, aluminum bronze, beryllium bronze, silicon bronze, manganese bronze.
Surface finish : Sandblasting, polishing, knurling, grinding, passivation, chemical film coating, impregnation coloring, brush/spray coloring, electroplating, anodizing, powder coating, brushing.
Delivery time : 1-5 days.
Steel
Iron alloyed with carbon (typically 0.1%-1.7%) and other alloying elements (such as chromium, nickel, manganese, etc.). By adjusting composition and heat treatment processes, diverse properties can be achieved, including high strength, high toughness, wear resistance, and corrosion resistance. It is suitable for producing components such as bolts, shafts, gears, drill bits, milling cutters, and turning tools, and is also frequently used in manufacturing engine valves and turbine blades.
Color : Silver .
Types : Steel S20C,S45C,S50C,SK85,SK95,40Cr,4140,4130,H13,D2,W1,A2,D2,M2,SKD11,ASP-23,S136.
Surface finish :Sandblasting, Mirror Finish, PVD Coating, Brushed Finish, Spray Coating, Electroplating.
Delivery time : 1-5 days
Magnesium
Magnesium has a density approximately two-thirds that of aluminum and one-quarter that of steel. Its low hardness results in minimal cutting force and reduced tool wear. With superior thermal conductivity compared to aluminum, it saves CNC machining time and material. Its strength-to-weight ratio outperforms both aluminum alloys and steel, while its damping capacity is 1.5 times that of aluminum, effectively absorbing vibrations and noise. These properties make it an ideal material for aerospace, automotive, and electronics industries.
Color : Silver.
Types : Magnesium alloy AZ91D/AM60B/AM50A/AS41B/ZK60/MB8/AZ31/WE43/ZE41/LA141/LZ91.
Surface finish : Chemical conversion coating, anodizing, nickel plating, electroplating, composite coating, spray painting, powder coating, electrophoretic coating.
Delivery time : 1-5 days.
Key machining processes used for mining parts
To support real-world mining requirements,we combines several CNC machining processes. That process mix is what turns raw material into durable mining parts.
CNC milling for mining components
CNC milling is central for flat and prismatic mining parts:
Mounting plates and bases for mining machines
Slotting, pocketing, and surfacing on wear plates for mining
Machining of welded structures used in heavy mining equipment
CNC milling produces accurate hole locations, flatness, and pocket geometry, all of which improve assembly of mining equipment.
CNC turning for mining shafts and hubs
Rotational mining parts rely on CNC turning:
Long shafts, step shafts, and axles for mining drives
Bushings, sleeves, and rings in mining joints and bearings
Threaded connectors and couplings for mining hydraulic lines
Turning holds roundness and surface finish on critical mining diameters so bearings and seals work reliably in the field.
Boring, drilling, EDM and grinding
For some mining components, additional processes are needed:
Deep drilling and boring for thick mining flanges and hubs
EDM when hardened wear parts in mining need intricate slots or sharp internal corners
CNC grinding for seal surfaces, bearing seats, and bores in mining rotating assemblies
These processes complement cnc machining to achieve the full specification for demanding mining parts.
Typical production capacity for mining parts
Size and thickness capability
Maximum part length: up to 1500–2000 mm
Maximum plate size: depending on fixturing
Minimum part size: mining sensors and hydraulic blocks in 10mm
Min Thickness range:3–5 mm
Exact numbers depend on the machine set-up and tooling. For specific mining components, checking dimensions with the supplier is always recommended.
Tolerance and flatness
For mining applications, typical CNC tolerances may include:
General dimensions on large mining parts: around ±0.05–0.10 mm
Critical fits such as bearing seats in mining drives: around ±0.01 mm or better
Flatness on reference faces for mining assemblies: controlled according to drawing requirements
These ranges ensure that mining parts fit and function correctly without adding unnecessary cost.
Why mining equipment uses CNC machining
Reliability and uptime in mining
In mining, unplanned downtime is extremely expensive. CNC-machined mining parts:
Fit the first time, reducing rework in the mining workshop
Maintain alignment, reducing wear in mining bearings and joints
Provide consistent quality from batch to batch, helping standardize mining maintenance
This combination supports higher machine availability across the mining operation.
Safety and compliance in mining
Accurate CNC-machined mining components contribute to safety:
Properly machined bores and faces help prevent leaks in mining hydraulics
Correct bolt patterns and fits maintain structural integrity for mining frames
Consistent quality supports regulatory compliance in the mining sector
Poorly machined mining parts can lead to fatigue, cracks, and dangerous failures. CNC machining helps mitigate that risk.
When to choose CNC machining for mining parts
CNC machining is especially suitable at specific stages of a mining project.
Design and prototyping: When new mining equipment is under development, CNC machining allows quick iterations and testing.
Low to medium volume: Many mining spares do not justify casting or forging tools; CNC machining is ideal for such quantities.
High-value or critical parts: When a component failure can stop a whole mining line, CNC machining offers the control needed.
Upgrades and retrofits: When updating existing mining equipment with improved designs or materials, CNC machining helps achieve precise interchangeability.
By choosing CNC machining at the right time, buyers in mining balance cost, flexibility, and reliability.
Summary
The mining industry needs strong structural parts, durable wear parts, and precise hydraulic and powertrain components that work together in tough conditions. CNC machining combines flexible processes, capable materials, and controlled tolerances to deliver those mining parts in a consistent way. If you are looking for CNC-machined components for mining equipment or planning a new mining project, you can contact Weldo Machining to discuss your drawings, materials, and target specifications and request a detailed quotation.
