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ZWZ / EQUIPMENT APPLICATIONS

Paper-machine bearings

Follow forming, pressing, drying, calendering and reeling with distinct wet/thermal loads and growth.

Paper-machine 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

Forming: guide, breast and suction couch rolls

Forming: guide, breast and suction couch rolls
Forming: guide, breast and suction couch rolls

Positions

breast, drive, guide and suction couch rolls.

Arrangement

spherical rollers with locating/floating functions and adapter/withdrawal sleeves.

Conditions

fast, lightly loaded wet duty and misalignment; internal/external supports differ by roll.

Engineering focus

clearance, coatings, seals and mounting, ensuring the floating side accommodates required axial displacement.

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02

Pressing: central, shoe and suction presses

Pressing: central, shoe and suction presses
Pressing: central, shoe and suction presses

Positions

central/press rolls, shoe presses and suction presses.

Conditions

wet, heavily loaded, deflecting rolls with lubrication/alignment effects at speed.

Arrangement

spherical rollers, plus deep-groove/plain shoe-press supports and specialised three-ring suction-press configurations.

Engineering focus

assess the actual load path and axial freedom; press positions cannot be reduced to one designation.

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03

Drying: cylinders and axial thermal growth

Drying: cylinders and axial thermal growth
Drying: cylinders and axial thermal growth

Positions

dryer cylinders, vacuum drying and Yankee supports.

Arrangement

spherical-roller pairs or spherical/single-row self-aligning combinations.

Conditions

high temperature, thermal growth and fast/light duty, with different locating/floating requirements.

Engineering focus

thermal stability, material, operating clearance and lubrication, explicitly accounting for cylinder expansion and support displacement.

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04

Calendering: heated and soft rolls

Calendering: heated and soft rolls
Calendering: heated and soft rolls

Positions

heated/soft calender-roll supports.

Conditions

heat, speed, variable loads and misalignment, with temperature changing operating clearance.

Arrangement

spherical-roller supports selected for the roll architecture.

Engineering focus

fits, lubrication and thermal deflection; distinguish roll-surface from bearing temperature.

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05

Reeling: changing roll diameter and loads

Reeling: changing roll diameter and loads
Reeling: changing roll diameter and loads

Positions

reel-roll and shaft supports.

Conditions

diameter, speed and load vary through the cycle; steady operation differs from acceleration.

Arrangement

paired spherical rollers and relevant shaft configurations.

Engineering focus

provide full-cycle load/speed records with lubrication, assembly and maintenance intervals.

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06

Design improvements and paper-machine examples

CC spherical-roller designs in the deck use separate cages and floating guide rings to address load sharing and contact stress.

Group examples (2025)

paper-machine projects list different supports for guide/couch/press/dryer positions; one machine is not one bearing selection.

Provide

web width/speed, roll diameter, position and temperature. Convert web m/min to bearing rpm using roll diameter.

Parameter reference

designation dimensions/loads follow the general-catalogue policy; industry cases do not overwrite model data.

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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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