Roll Neck Bearings for Rolling Mills

Requirements

Roll Neck Bearing Requirements

Roll Neck & Chock Fit

Roll neck bearings must match the shaft, chock and adjacent components to ensure stable support, correct load distribution and reliable mounting.

High Radial & Combined Loads

Rolling mill roll necks may carry very high radial loads together with axial loads generated by strip guidance, roll crossing or process variation.

Axial Location & Thermal Displacement

The bearing arrangement must provide axial guidance while allowing thermal expansion where required.

Precision, Clearance & Rigidity

Internal clearance, precision and fits influence roll-system rigidity, runout, heat generation and rolling accuracy.

Lubrication, Sealing & Maintenance

Lubrication flow, contamination control, sealing and mounting procedures directly affect bearing life and maintenance reliability.

Products

Recommended Bearing Types

Four-Row Cylindrical Roller Bearings
Primary high-radial-load solution for work roll, backup roll and many roll neck positions; separable design supports mounting and maintenance.
Four-Row Tapered Roller Bearings
Combined radial and axial load support for roll neck positions requiring integrated axial location and robust guidance.
Double Row Cylindrical Roller Bearings
High radial rigidity and compact support for intermediate roll, smaller roll neck or limited-space positions.
Spherical Roller Bearings
Self-aligning support for roll neck or auxiliary positions with shaft deflection, chock deformation or mounting misalignment.
Thrust Bearings
Axial location and guidance for roll systems using separate radial and axial bearing arrangements.

Selection

Selection Information

Information Customers Can Provide

Rolling mill type and mill stand
Roll position: work, backup or intermediate roll
Drive side / operator side
Existing bearing brand and number
Roll neck diameter and shoulder dimensions
Housing or chock bore
Bearing ID / OD / width
Radial and axial loads
Speed and operating cycle
Locating or non-locating requirement
Precision, clearance or runout requirement
Operating temperature
Lubrication, filtration and sealing method
Quantity
2D / 3D roll neck and chock drawing

CHG Assessable Content

Suitable bearing type and internal structure
Locating and non-locating arrangement
Radial and axial load support direction
Size and adjacent mounting arrangement
Shaft and housing fit direction
Material and heat treatment direction
Precision class, internal clearance or preload
Cage, sealing and lubrication requirements
Thermal expansion and axial displacement allowance
Mounting and dismounting considerations
Replacement compatibility
Inspection documents and delivery proposal

ADVANTAGES

Why Choose CHG

Large Size Capability

Rolling mill bearings with bore diameter from 100mm to 1600mm for large work roll, backup roll and intermediate roll neck applications.

Arrangement-based Selection

Solutions evaluated according to roll position, roll neck and chock dimensions, radial and axial loads, locating method, speed, clearance and lubrication.

Custom Manufacturing

Custom support by bearing number, roll neck drawing, dimensions, fits, clearance, precision, sample information or replacement requirements.

Quality & Inspection Support

Material certificates, dimensional inspection, hardness and heat-treatment records, product photos and packing photos can be provided according to order requirements.

Work Roll Bearings

Roll neck bearing solutions for work roll positions requiring radial load capacity, speed, precision and axial guidance.

Backup Roll Bearings

Large-size roll neck solutions for very high loads, high rigidity and continuous operation.

Intermediate Roll Bearings

Compact and precise roll neck solutions for multi-roll and cold rolling mill systems.

Bearings for Hot Rolling Mills

Roll neck solutions for heat, cooling water, scale, impact and contamination.

Bearings for Cold Rolling Mills
Roll neck solutions focused on rigidity, precision, low runout, speed and clean lubrication.

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FAQ

Roll Neck Bearings for Rolling Mills FAQ

Please provide the mill type, roll position, bearing number, roll neck and chock dimensions, radial and axial loads, speed, locating requirement, clearance, lubrication, quantity and drawing if available.

Four-row cylindrical roller bearings are commonly selected for very high radial loads and may be combined with a separate axial bearing. Four-row tapered roller bearings can support radial and axial loads and provide integrated axial guidance. Final selection depends on the complete roll arrangement.

The locating end controls axial position, while the non-locating end allows axial displacement caused by thermal expansion or roll-system movement. Bearing type, axial clearance and adjacent components must be reviewed together.

The bore diameter range is generally from 100mm to 1600mm. Custom dimensions and non-standard mounting arrangements can be reviewed according to drawings and application requirements.

Yes. Please send the original brand, bearing number, ID / OD / width, roll neck and chock dimensions, clearance or precision requirement, drawing and operating information for compatibility review.

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