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Bearing Chocks for Rolling Mills

LONSUN supplies bearing chocks manufactured to customer drawings for work rolls, backup rolls and other rolling mill applications. Material route, machining accuracy, bearing fit and inspection scope are selected around the mill type, stand position, bearing arrangement, load condition and replacement requirement.

Discuss Your Bearing Chock Requirement

A bearing chock is a critical rolling mill component that houses the bearing and supports the roll neck while maintaining its required position and alignment. LONSUN bearing chocks can be produced from cast steel, forged steel or fabricated heavy-duty structures, followed by machining, fitting and inspection. Final material, dimensions, tolerances and acceptance criteria must be confirmed against the approved drawing and actual service conditions.

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lonsun roll nodular roll nodular acicular roll ccsga roll spheroidal graphite acicular spheroidal graphite cast iron spheroidal graphite pearlitic SGA ROLL

Acicular Nodular Cast Iron Roll, hardness and wear resistance is more than the SGP quality, while at the same time exhibiting high strength and resistance to fire-cracks. 

SGP Roll
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lonsun roll ccsgp ccsgp roller nodular pearlitic roll nodular cast iron roll nodular roll sgp roll

SGP rolls are composed by nodular graphite and carbides arranged in a pearlitic matrix. We called SGP roll or Pearlitic Nodular Cast Iron Roll. 

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Forged Steel Rolls for Cold Rolling Mills

LONSUN supplies forged steel work rolls, intermediate rolls and backup rolls for cold rolling applications. Selection connects grade, working-layer hardness, hardening depth, toughness, surface finish, dimensional accuracy and resistance to accidental damage.

Discuss Your Forged Cold Roll Requirement

Forged cold-mill rolls are produced through controlled forging, heat treatment and precision machining to obtain high, homogeneous working-layer hardness and the required support properties. Published hardened-layer depth can exceed 30 mm depending on design and application, but the usable layer and acceptance method must be defined for each order.

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Forged Steel Rolls for Hot Rolling Mills

LONSUN supplies forged steel rolls for plate, planetary, welding-tube, seamless-tube and non-ferrous hot-rolling applications. Grade, barrel and surface hardness, hardening depth, toughness and machining are selected against the roll function and operating conditions.

Discuss Your Forged Hot Roll Requirement

Forged hot-mill rolls are produced from forged steel blanks and heat treated to develop the required hardness distribution and mechanical properties. Their selection must account for roll type, bite, load, temperature, wear, hardening depth and resistance to accidental damage—not nominal surface hardness alone.