Used Ball Bearings for sale (5,349)

Condition: new, functionality: fully functional, Year of construction: 2026, Dry and Wet Ball Mill: Structure, Operation, and Technical Details A ball mill is a fundamental grinding device used in mineral processing, cement manufacturing, chemical production, and other industrial applications. It works by rotating a cylindrical shell filled with grinding media—usually steel balls—causing impact and friction that reduce materials to fine powder. Based on the grinding environment, ball mills are classified into dry and wet types, each suited for specific materials and process requirements. Working Principle Both dry and wet ball mills operate on the same mechanical principle. The rotating cylinder, driven by a motor through a gear system, lifts the grinding media and material along the inner wall. As the rotation continues, the balls fall under gravity, striking and grinding the material. The difference lies in the presence or absence of a liquid medium during grinding. Dry Ball Mill A dry ball mill is used when the material must remain moisture-free or when water could affect product quality. It is commonly applied in cement clinker, limestone, quartz, and refractory material grinding. The discharge can be either grate type or overflow type, depending on the desired fineness. Technical Features: Feeding size: ≤25 mm Discharge size: 0.075–0.4 mm Capacity: 0.65–90 t/h Liner material: High manganese steel or wear-resistant alloy Drive system: Gear-driven or direct-coupled motor Dust control: Equipped with air exhaust and dust collector Advantages: Suitable for materials sensitive to moisture No drying process required after grinding Lower corrosion risk and simpler maintenance Easier material classification and separation Limitations: Dry grinding produces more dust and heat, requiring efficient ventilation and dust collection systems. Wet Ball Mill A wet ball mill operates with water or another liquid medium added to the material. The slurry formed during grinding improves efficiency by reducing friction and preventing excessive heat buildup. It is widely used in ore beneficiation, ceramics, and chemical industries. Technical Features: Feeding size: ≤25 mm Discharge size: 0.074–0.2 mm Capacity: 0.65–615 t/h Liner material: Rubber or high-chromium steel Discharge method: Overflow or grate type Auxiliary equipment: Classifier, pump, and thickener for slurry circulation Advantages: Higher grinding efficiency and finer particle size Reduced dust and noise levels Continuous operation suitable for beneficiation circuits Better control of particle uniformity Limitations: Requires drying if the final product must be in powder form and involves more complex slurry handling. The selection between dry and wet grinding depends on the material characteristics, downstream process, and environmental conditions. Dry mills are preferred for materials that must stay moisture-free, while wet mills are ideal for fine grinding and slurry-based processes. Conclusion Dry and wet ball mills share the same mechanical structure but differ in their grinding environment and application scope. The dry type offers simplicity and low maintenance for moisture-sensitive materials, while the wet type provides higher efficiency and finer output for mineral and chemical processing. Understanding their technical parameters and operational differences ensures optimal equipment selection, improved productivity, and reliable performance in industrial grinding operations. Todpfx Asq Nx Aljirod

Condition: excellent (used), Rolling bearings, ball bearings, SKF bearings, SKF, self-aligning bearings, roller bearings, needle bearings, axial cylindrical roller bearings, shaft washer, axial needle roller and cage assembly, cylindrical roller and cage assembly, cylindrical roller bearings -Manufacturer: INA, needle bearing with inner ring unused OVP -Type: RNA/NA 4824 -Outer diameter: 150 mm -Inner diameter: 120 mm Tjdpfev Spwqsx Airsd -Number: 6 needle bearings available -Price: per piece -Bearing dimensions: Ø 150 x 30 mm -Weight: 1.2 kg/piece

Condition: excellent (used), Ball bearings, roller bearings, axial cylindrical roller bearings, cylindrical roller bearings -Manufacturer: INA, cylindrical roller bearing. SL04 5020PP, unused, original packaging -Type: INA SL045020-D-PP -Item no.: 1031 4147 MOuter diameter: 150 mm -Inner diameter: 100 mm -Width: 67 mm -Number: 6x cylindrical roller bearings available -Price: per piece -Dimensions box: 160/160/H70 mm -Weight: 3.8 kg/piece Tedov Rw Syspfx Airsd

Year of construction: 2004, condition: excellent (used), Slewing bearings, slewing ring, single-row ball bearing, four-point contact bearing, gear ring, steering ring, Tjdpfeiqpx Nex Airsd -Slewing bearings -Type: Drawing No. 281.30.1200.013.11.1503 -Dimensions: see photos -Dimensions total: Ø 1395 x 90 mm -Transport weight: 240 kg

Condition: excellent (used), Rolling bearings, ball bearings, SKF bearings, SKF, self-aligning bearings, roller bearings, needle bearings, axial cylindrical roller bearings, housing washer -Manufacturer: INA, bearing washer for axial cylindrical roller bearings 5 pcs. unused OVP Tjdpov R U Eqjfx Airjd -Type: GS 811 30 .: Carton: with 5 pieces of bearing washers -Quantity: 6x box available -Price/Sale: per carton -Dimensions box: 200/200/H50 mm -Weight: 3.8 kg/piece

Condition: excellent (used), Rolling bearings, ball bearings, SKF bearings, SKF, self-aligning bearings, roller bearings, needle bearings, axial cylindrical roller bearings, shaft washer, axial needle roller cage, cylindrical roller cage -Manufacturer: INA, Axial cylindrical roller bearings, axial needle roller bearings, 5 pcs., unused, original packaging -Type: AXK 150190 A -Outer diameter: 190 mm -Inner diameter: 150 mm -Dimensions: Ø 190 x 5 mm Tsdpfxsv Sprne Airjd -Price per pack of 5 pieces: 200 euros -Stock: 4 package units and 2 individual items -Weight: 0.2 kg/piece

Condition: excellent (used), Ball bearings, roller bearings, axial cylindrical roller bearings, cylindrical roller bearings -Manufacturer: NSK, cylindrical roller bearings. Double row, unused. -Type: NNU4960E4C3DR -Outer diameter: 420 mm -Inner diameter: 335 mm -Width: 120 mm -Number: 2x cylindrical roller bearings available -Price: per piece -Dimensions: Ø 420 x 120 mm Tjdjzbrkcspfx Airod -Weight: 34.7 kg/pc.

Condition: excellent (used), Ball bearings, roller bearings, axial cylindrical roller bearings, cylindrical roller bearings -Manufacturer: NSK, cylindrical roller bearing inner ring unused -Type: NNU4960 03DR -Outer diameter: 335 mm -Inner diameter: 300 mm -Width: 120 mm -Quantity: 2x inner ring available Tsdpfx Ajzbrltjired Price: per piece -Dimensions: Ø 335 x 120 mm -Weight: 16.2 kg/pc.

Condition: new, functionality: fully functional, power: 55 kW (74.78 HP), Year of construction: 2026, Ball Mill for Powder and Mining Plant: Structure, Function, and Technical Details Tedpfxjq Nf U Eo Airsd A ball mill is a key grinding machine widely used in mining, metallurgy, cement, chemical, and powder-making industries. It is designed to grind various ores and other materials into fine powder through impact and attrition between steel balls and the material inside a rotating cylindrical shell. In mining plants, ball mills are essential for ore beneficiation, preparing materials for flotation, magnetic separation, or leaching processes. In powder production, they ensure uniform particle size and high surface area for further processing. Working Principle The ball mill operates on a simple yet effective principle: as the cylindrical shell rotates around its horizontal axis, the grinding media (steel or ceramic balls) are lifted along the inner wall by centrifugal force and friction. When they reach a certain height, they fall freely, striking and grinding the material below. This repeated motion causes both impact and abrasion, reducing the material to the desired fineness. The grinding process can be performed in dry or wet conditions depending on the application. Structural Composition A standard ball mill consists of several main components: Feeding part: Equipped with a feeder or screw conveyor to ensure uniform material input. Discharging part: Can be grate type or overflow type, depending on the discharge method. Rotating part: The cylindrical shell made of steel plates, lined with wear-resistant liners. Transmission system: Includes motor, reducer, small transmission gear, and electrical control. Grinding media: Steel balls or ceramic balls of different diameters for efficient grinding. The internal liner design and ball size distribution are optimized to achieve maximum grinding efficiency and minimal energy consumption. Technical Details Typical Specifications: Feeding size: ≤25 mm Discharge size: 0.074–0.4 mm Capacity: 0.65–615 t/h (depending on model and material hardness) Cylinder speed: 18–38 r/min Power: 18.5–4500 kW Liner material: High manganese steel, rubber, or alloy steel Grinding media load: 30–45% of cylinder volume Operating Modes: Dry grinding: Suitable for materials that must remain moisture-free, such as cement clinker, limestone, and quartz. Wet grinding: Common in ore beneficiation, where water or slurry improves grinding efficiency and particle uniformity. Application in Mining Plants In mining operations, ball mills are used after crushing to further reduce ore size and liberate valuable minerals. They are integrated into grinding circuits with classifiers, hydrocyclones, and flotation systems. The ground material is classified by size, and oversized particles are returned to the mill for regrinding. This closed-circuit system ensures consistent product fineness and efficient energy use. Common Applications: Gold, copper, iron, and zinc ore grinding Cement clinker and slag processing Silicate and ceramic powder production Coal and mineral powder preparation Conclusion A ball mill is an indispensable piece of equipment in both powder production and mining beneficiation plants. Its ability to grind materials into fine, uniform particles makes it vital for downstream processes such as flotation, sintering, and chemical reactions.

Condition: new, Manufacturer: CS Condition: New, without packaging Type: Profile rail guide Ball rail: KSA-035-SNS-P-MA-AK Ball carriage: KWD-035-FNS-CS-C2-P-DS Size: 35 Guide system: Ball bearing profile rail guide Ball carriage design: Flange carriage Tjdezcw Ntepfx Airsd Preload class: C2 Application area: Machine tools, automation technology, handling systems and linear axes Feature: Precision linear guide with ball bearing technology Quantity available: 2 pieces

Condition: excellent (used), Ball bearings, roller bearings, axial cylindrical roller bearings, cylindrical roller bearings -Manufacturer: NSK, cylindrical roller bearing, double row, unused -Type: NNU4976 E1 -Outer diameter: 520 mm -Inner diameter: 422 mm -Width: 140 mm -Number: 3x cylindrical roller bearings available -Price: per piece Todpfx Aiew A Nm Sorsd -Dimensions: Ø 520 x 140 mm -Weight: 60 kg/piece

Condition: excellent (used), Roller bearings, ball bearings, spherical bearings, bearings, rolling bearings, tapered roller bearings, cylindrical roller bearings Tedpfx Aj Aawzajirsd -Rolling bearings: Tapered roller bearings -Outer diameter: 140 mm -Inner diameter: 85 mm -Width: 77 mm -Weight: 3.1 kg

Condition: excellent (used), Axial deep groove ball bearings, axial deep groove ball bearings, axial ball bearings, axial bearings, axial spherical roller bearings -Manufacturer: FAG, axial spherical roller bearing , original packaging Tjdpfjf S Ncwex Airsd -Outer diameter: 380 mm -Inside: 280 mm -Width: 60 mm -Number: 2 pieces axial spherical roller bearings available -Price: per piece -Total dimensions: Ø 380 x 65 mm -Weight: 18 kg

Condition: excellent (used), Large slewing bearings, slewing ring, single-row ball slewing ring, four-point bearing -comes from: HUSS Rides, manufacturer of leisure facilities -Replacement part: from Top Junior 70011-15 -Manufacturer: Rothe Erde -Type: 2 -Type: 2.060.40.0490.001 63132.609 -Outer diameter: 625 mm Tedpfx Aiecgf R Djred -Inner diameter: 354 mm -Height: 90 mm -Quantity: 3x available in storage -Price: per piece -Weight: 122 kg

Condition: used, Slewing bearings, slewing ring, single row ball slewing ring, four-point bearings Tsdpfjcgf R Ajx Airjd -Comes from: HUSS Rides manufacturer of leisure facilities -Spare part: from Flic Flac connection from gondola -Manufacturer: IMO -Type: 001625 -Type: IMO 33/95 -Outer diameter: 624 mm -Inner diameter: 355 mm -Height: 98 mm -Number: 2x bearings available -Price: per piece -Weight: 118 kg

Year of construction: 2020, condition: new, ARTES DN150 PN100 Pneumatic Control Ball Valve – ProTACT – SAMSON 3730-3 For sale: Industrial control ball valve manufactured by ARTES Valve & Service, equipped with a ProTACT pneumatic actuator and SAMSON 3730-3 HART positioner. Tsdpfx Ao Ahic Hoirjd Complete assembly, supplied in a wooden transport crate. Valve specifications: * Manufacturer: ARTES Valve & Service * Type: Control Ball Valve 150 W * Nominal diameter: DN150 * Pressure rating: PN100 * Operating pressure: 47 bar(g) * Operating temperature: 385°C * Body material: 1.0460 * Kvs value: 230 m³/h * Opening angle: 90° * Year of manufacture: 2020 * Serial number: 3162026.1 * Tag number: 83-PCV-800 * Flanged connections Pneumatic actuator: * Manufacturer: ProTACT GmbH * Type: PRY.B2.401S.04.2530KΦ100/ * Reference: HPY-B2-401-SRC4+HT * Supply pressure: 4–6 bar * Temperature range: −15°C to +150°C * Spring action: Clockwise (CW) * Serial number: IS-200162-1-1 Positioner: * Manufacturer: SAMSON * Model: 3730-3 * Type: HART-compatible pneumatic positioner * Input signal: 4–20 mA DC * Maximum supply pressure: 7 bar * ATEX marking * Integrated position indication and diagnostics Condition: Excellent visual condition, stored in protective packaging inside a wooden crate. Operating condition has not been independently verified. Location: Rotterdam, The Netherlands Delivery terms: EXW Rotterdam Worldwide shipping can be arranged upon request. Sold as is, where is, without warranty or returns.

Condition: used, Ball screw with nut, transroll spindle, ball screw nut, threaded spindle, threaded rod, threaded bolt, threaded rod, ball screw drive, linear bearing, -Rexroth: R15104D977/R15104D973 -Shaft: Ø 38 mm -Thread length: 1150 mm -Number: 2x spindles available -Price: complete -Dimensions: 1710/330/H250 mm Tsdpofdg Itjfx Airod -Weight: 54 kg

Condition: new, RHP Bearings – Radial ball bearing MJ4.1/2JC3, unused, in original packaging, 100% functional. Tjdpfx Aisi Ec Dbsred

Condition: used, VEB Porcelain Ball Mill,Ball Mill, Used machine Manufacturer: Kombinat VEB Keramische Werke Hermsdorf Type / Model: 2841-5-V921 Year of manufacture: 1990 Condition: Used, good industrial condition Dimensions and capacity: - Overall dimensions: 2000 x 1330 x 1680 mm - Drum volume: Approx. 250 liters - Weight: 967 kg Tedpfx Aij Afnn Usrod Technical and operating parameters: - Motor power: 2.5 kW - Drum rotational speed: 34 rpm

Condition: used, Rolling bearings, ball bearings, SKF bearings, SKF, spherical bearings, roller bearings -Type: 24056 CC/ W33 -Lubricating groove -Bore: Ø 280 mm Tjdpfxed Nw H Ae Airsd -Outer diameter: 420 mm -Width: 140 mm -Weight: 74 kg

Condition: used, Slewing bearings, slewing ring, single row ball slewing ring, four-point bearings -Comes from: HUSS Rides manufacturer of leisure facilities -Spare part: from -Manufacturer: INA -Type: VLA200544-N -Outer diameter: 640.3 mm -Interior diameter: 434 mm Tedpfocghhkox Airod -Height: 56 mm -externally toothed -Teeth: 105 -Module: 6 mm -Number: 6x bearings available -Price: per piece -Weight: 39 kg/piece

Condition: good (used), Year of construction: 1998, Model ... Vipros 20-50-50 Frame Construction ... Bridge Type Press Capacity ... 20 Tonnes (196kN) Press Type ... Servo Controlled Hydraulic Ram Axis Traverse Distance ... 1270 mm x 1270 mm Workable Max. Sheet Size . 1270 mm x 2540 mm (with auto repositioning) Maximum Material Thickness ... 6.35 mm Mild Steel Max. Material Weight ... 105 Kg Max. Material Weight (Max Speed) ... 62 Kg Max. Hole Dia. ... 88.9 mm Number Of Stations ... 31 Stations: 19 x 12.7 mm 6 x 31.7 mm 1 x 50.8 mm 2 x 88.9 mm Tede Afdz Rspfx Aired Auto Index 2 x 31.7 mm 1 x 50.8 mm Axis Speed ... 82 m/min Hits Per Minute (2mm Pitch) ... 1000 H.P.M./2.5mm Stroke (25.4mm Pitch) ... 340 H.P.M./8mm Stroke Turret Speed Bi-Directional ... 35 R.P.M. Punching Accuracy ... ± 0.07 mm Punching Accuracy (High Accuracy Mode) ... ± 0.05 mm Repeatability ... ± 0.015 mm Ram Stroke Length (Maximum) ... 40 mm Axis Drive ... AC Servo Motor Turret Drive ... AC Servo Motor Electric Power Required ... 22 kVA 400V +/- 10% 50 Hz Air Pressure Required ... 5.0 kgf/cm² Air Flow ... 250 1/min Machine Length ... 5030 mm Machine Width ... 2630 mm Machine Height ... 2160 mm Machine Weight ... 9200 kg NC SPECIFICATION Model of NC ... FANUC 18-P Axis ... 3 Axis Simultaneous + PHNC Tape Code ... EIA or ISO (Automatic Recognition) Programming Mode ... Absolute/incremental Min. Input ... 0.01 mm (0.01°) Max. Input ... 99999.99 mm Preparatory Function ... G - 2 Digit T Function ... T - 3 Digit M Function ... M - 3 Digit Single Block ... Yes Block Delete ... Yes Optional Stop ... Yes Editing ... Yes Manual Data Input ... Yes Memory Capacity ... 64 Kb No. Of Programs ... 200 Machine Operation ... Memory Interface ... RS 232 C

Condition: new, Year of construction: 2026, We have various kinds of ball grinding mill such as batch ball mill, rod mill, cement ball mill, mining ball mill, welcome to contact our team for further details according to your specific requirements. Tjdpfsq I Nw Iox Airjd

Condition: excellent (used), Rolling bearings, ball bearings, SKF bearings, SKF, self-aligning bearings, roller bearings, needle bearings, axial cylindrical roller bearings, housing washer -Manufacturer: SKF INA, GS housing washer for cylindrical bearings / axial needle roller bearings. Unused, Tjdpfx Aev Rnwysirsd -Type: GS81112 INA GS 811 12 -Outer diameter: 85 mm -Inner diameter: 62 mm -Quantity: 163x bearing disc available -Price: per piece / from 2 pieces 14,- €/piece / from 10 pieces 12,- €/piece -Carton dimensions: 90/90/H20 mm -Weight: 0.1 kg/piece

Condition: used, Year of construction: 1986, functionality: fully functional, Dry-ball mill – including new electric motor Tedpfxexixiyj Airod