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Steelmaking and rolling-mill bearings

Explore steelmaking, casting, hot/cold rolling and auxiliary supports with distinct loads, heat and precision.

Steelmaking and rolling-mill 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

Iron/steelmaking: slewing, tilting and maintenance

Iron/steelmaking: slewing, tilting and maintenance
Iron/steelmaking: slewing, tilting and maintenance

Distributors

four-point-contact slewing supports with heat, sealing and contamination concerns.

Sinter/torpedo cars

double-row tapered and other wheel supports under loads/shocks.

Converters

integral spherical rollers at the operating side and split spherical designs at the drive side; tilting drives have separate cylindrical/tapered arrangements.

Engineering focus

split designs support maintenance access but still require load, fit and replacement-space assessment.

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02

Continuous casting: heat, steam and deflection

Continuous casting: heat, steam and deflection
Continuous casting: heat, steam and deflection

Positions

mould, segment rollers and ladle turrets.

Roller arrangements

full-complement cylindrical, needle, spherical/single-row self-aligning, three-ring and water-cooled split options according to position/envelope.

Turrets

three-row cylindrical slewing and self-lubricating plain supports under alternating overturning loads.

Engineering focus

thermal stability, sealing, operating clearance, lubrication and roller thermal deflection; distinguish bearing from ambient temperature.

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03

Hot strip/plate: work and backup rolls

Positions

roughing/finishing work rolls and backup rolls.

Arrangement

four-row tapered or cylindrical bearings with double-row tapered/thrust supports; oil-film backup rolls have dedicated large-angle tapered locating arrangements.

Conditions

rolling forces, shocks, speed and coolant ingress; treat radial and axial loading separately.

Engineering focus

material/heat treatment, mounted clearance, lubrication and sealing; finishing precision requirements are not identical for every position.

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04

Sections, bars/wire and guide rollers

Sections, bars/wire and guide rollers
Sections, bars/wire and guide rollers

Universal mills

different horizontal/vertical roll arrangements using four-row cylindrical or double/four-row tapered supports.

Bar mills

separate radial support and axial location in roughing/intermediate/pre-finishing stands.

Guides/wire finishing

derive actual bearing rpm from line speed and assess cages, lubrication and sealing.

Engineering focus

m/s is not rpm; use roll diameter and drive relationships, preserving position-specific suffixes and precision grades.

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05

Cold rolling and Sendzimir: precision and matching

Cold rolling and Sendzimir: precision and matching
Cold rolling and Sendzimir: precision and matching

Cold rolling

four-row cylindrical/tapered and side-support arrangements for different stand architectures, with inner-ring machining, precision and clearance concerns.

Sendzimir

two-/three-row cylindrical backup supports with matched section height and rotational precision.

Engineering focus

matched sets, roll-system stiffness, profiles and seals together.

Provide

stand layout, roll position, matching identifiers, installation and grinding records, not a designation alone.

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06

Auxiliaries: straightening, shearing and handling

Straighteners

spherical and sealed double-row full-complement cylindrical alternatives.

Flying shears

cylindrical/tapered rollers with special clearance under start/stop precision duty.

Cooling beds/roller tables

lubrication, clearance and surface protection for low-speed or hot environments.

Crane sheaves

sealed full-complement double-row cylindrical supports.

Engineering focus

auxiliaries have different loads, heat, speeds and maintenance from main stands.

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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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