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Case Study / High Temperature Bearings

UNASIS Spain High Temperature Self-Aligning Ball Bearing Case (2210-2RSHT-H300)

Custom 2210-2RSHT-H300 high-temperature self-aligning ball bearings enabling stable 300–650°C furnace fan operation, 60% less vibration and 10-month service life for UNASIS Spain.
60%
Vibration reduced
10months
Service life
75%
Less shutdowns
7,200h
MTBF

Client Overview

UNASIS is a European professional high-temperature industrial fan manufacturer with ISO9001 certification, serving metallurgy, chemical furnace exhaust and thermal treatment lines.

Furnace outlet fans run continuously at 300–650°C under strong cyclic vibration; original standard bearings carbonized lubricant and deformed, triggering repeated shutdowns.

Client Goals

Deliver customized high-temperature self-aligning ball bearings for 300–650°C heat and persistent vibration, extend life, eliminate fan shake and noise, meet EU inspection standards with per-batch test reports—without changing fan mounting sizes.

Engineering Challenges

Dual Heat & Vibration

300–650°C constant heat plus high-speed blade vibration carbonized grease, causing lockup and fan jitter.

Fixed Installation Boundary

Limited fan housing space; outer diameter and thickness could not change—internal optimization only.

Strict EU Material Audit

Every batch required full chemical, heat-treatment and mechanical test reports for European audits.

Production Loss Risk

Frequent bearing replacement caused long line halts and heavy output loss.

Technical Solution

Composite High-Temp Material

Ceramic rolling elements with heat-resistant stainless inner and outer rings raise deformation and impact tolerance.

Solid Self-Lubricating Coating

High-temp solid lubricant inside the cavity resists carbonization up to 650°C—no mid-cycle refueling.

Superfinishing Clearance Control

Ultra-ground raceways calibrate internal clearance to offset thermal expansion and damp vibration.

Reinforced Self-Aligning Structure

Optimized spherical raceway compensates shaft deflection from fan vibration, eliminating abnormal noise.

We no longer buy imported standard bearings—EGEN's high-temperature design runs our furnace fans reliably and passed every EU audit.
UN
Daniel Serrano
Engineering Lead, UNASIS - Spain

Achieved Results

Fans fitted with 2210-2RSHT-H300 bearings ran 10 consecutive months without replacement; vibration fell 60%, noise was fully eliminated, shutdown frequency dropped 75%, and an annual bulk-supply cooperation was signed.

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