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ZWZ / EQUIPMENT APPLICATIONS

Mining and cement equipment bearings

Explore crushing, screening, roller presses, mills, separators and kilns with distinct loads and lubrication.

Mining and cement equipment bearings
Equipment and support arrangements
English guide to common diagram labels

The equipment descriptions explain these original diagrams in English. The original artwork is retained.

轴承
Bearing
内圈
Inner ring
外圈
Outer ring
滚动体
Rolling element
保持架
Cage
密封
Seal
径向
Radial
轴向
Axial
主轴
Main shaft / spindle
偏航
Yaw
变桨
Pitch
齿轮箱
Gearbox
发电机
Generator
丝杠
Screw
工作台
Table
减速机
Reducer
连铸
Continuous casting
热轧
Hot rolling
冷轧
Cold rolling
烘缸
Drying cylinder
压榨
Pressing
破碎机
Crusher
振动筛
Vibrating screen
回转支承
Slewing bearing
磨煤机
Coal pulverizer
01

Jaw, cone and impact crushers

Jaw, cone and impact crushers
Jaw, cone and impact crushers

Jaw crushers

moving-jaw/frame spherical supports under impacts and shaft deflection, grease lubricated in the deck.

Cone crushers

spherical/tapered combinations with circulating oil; assess contamination, heat balance and contact stress.

Impact crushers

spherical supports with oil-bath/circulation, addressing temperature and cages under faster impact duty.

Design direction

split cages, lubrication openings and contact profiles; keep the three duty/lubrication regimes separate.

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02

Vibrating screens: vibration loads and heat

Vibrating screens: vibration loads and heat
Vibrating screens: vibration loads and heat

Position

exciter and screen supports.

Arrangement

spherical rollers for circular/linear screens, with cylindrical alternatives for faster designs.

Conditions

vibration, alternating loads and heat; steady rpm alone is insufficient.

Engineering focus

cages, rotational precision and lubrication, with amplitude, frequency, loading, temperature and relubrication records. The deck also describes raceway/precision improvements for vibrating feeders.

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03

Roller presses: heavy radial and axial loads

Roller presses: heavy radial and axial loads
Roller presses: heavy radial and axial loads

Position

press-roller supports.

Arrangement

four-row cylindrical rollers with paired spherical-roller thrust or double-direction tapered thrust supports, plus paired spherical alternatives.

Conditions

low-speed heavy loads, misalignment and shocks with central grease supply; relate edge wear to roller-system deflection.

Engineering focus

case-carburised/adapted materials, profiles, cages and lubrication paths, separating radial support from axial restraint.

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04

Vertical and coal mills: rollers and preload

Vertical and coal mills: rollers and preload
Vertical and coal mills: rollers and preload

Vertical mills

spherical/cylindrical or double-row tapered/cylindrical combinations, with forced-oil lubrication in the deck.

Coal mills

spherical combinations or paired tapers depending on design.

Issues

assess skew loading, inadequate preload, lubrication and heat with assembly evidence.

Engineering focus

material/heat treatment, roller contact, pin/solid cages; provide mill type, position, oil temperature and clearance.

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05

Separators: rotor supports and thermal growth

Separators: rotor supports and thermal growth
Separators: rotor supports and thermal growth

Arrangement

angular-contact/deep-groove or four-point-contact/deep-groove ball combinations.

Conditions

acceleration, axial location, sealing and thermal growth.

Engineering focus

locating/floating functions, lubrication, temperature and axial loads; distinguish separator data from grinding rollers.

Reference matching

retain the machine-to-complete-designation relationship; similar dimensions do not establish interchangeability.

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06

Rotary kilns and ball mills

Rotary kilns and ball mills
Rotary kilns and ball mills

Kiln positions

support and thrust rollers; paired spherical support bearings and spherical/spherical-thrust combinations for thrust rollers.

Conditions

low-speed heavy loads, heat and lubrication; record thrust-roller axial loads separately.

Ball mills

large spherical-roller supports.

Engineering focus

alignment, contact distribution, lubrication and thermal growth with shell and foundation stiffness.

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07

Information for an application enquiry

Equipment and position

machine model, mounting position and complete bearing designation with suffixes. For replacements, include the original arrangement and fit dimensions.

Operating records

bearing speed in rpm, radial and axial loads, shocks and starts/stops. Paper-web and rolling-line speeds are not bearing rotational speeds.

Lubrication and assembly

lubricant grade, oil supply or relubrication records, temperature, mounted clearance or preload, seals and contamination.

Problem and objective

temperature rise, noise, vibration or flaking, timing, photographs and maintenance records, plus the outage window or redesign objective.

APPLICATION SUPPORT

Turn an equipment issue into a technical enquiry

Share the complete designation, position and operating records to discuss arrangements, lubrication, assembly or replacement.

Edited from the group’s 2025 industry presentation · Project records and design targets apply to their specific equipment conditions.

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