Business License
Contact Us
Your inquiry content must be between 10 to 5000 characters
Please enter Your valid email address
The Science Behind Bearing Materials – Steel Quality
Every high-precision bearing is fundamentally defined by the quality of its steel. At Luoyang Ouna Bearing, we source premium bearing steel to ensure optimal performance and longevity.
Why GCr15 remains the industry standard
GCr15 is the most widely used high-carbon chromium bearing steel globally — a material with excellent properties [2†L13-L14]:
High uniform hardness across the component after quenching and tempering
Superior wear resistance
High contact fatigue performance
Good cold working plasticity — essential for precision machining
Heat treatment: Where wear resistance is forged
Heat treatment determines final bearing quality. Our process parameters include heating to 855-875℃, soaking for 50-70 minutes, followed by a salt bath isothermal quench at 220-240℃ before final tempering [2†L5-L7]. This yields a final hardness of HRC 60-62, consistent with durability specifications.
For larger bearing rings, we apply extended tempering to relieve residual stresses. The resulting microstructure — lower bainite and carbides — delivers optimal hardness with sufficient toughness for demanding cyclic loads.
Material innovations shaping tomorrow‘s bearings
The bearing industry is evolving beyond GCr15. Carbonitriding heat treatment combined with new alloys doubles operating life in heavy-duty conditions [3†L13-L16]. High‑nitrogen X30CrMoN15 offers superior corrosion resistance for aerospace applications [3†L29-L34]. Bearing carriages increasingly substitute aluminum alloy for steel to achieve excellent stiffness-to-weight ratios [3†L40-L42].
At Ouna Bearing, we continue upgrading our material technology while maintaining the precision heat treatment that delivers reliable performance. Each component undergoes hardness verification to ensure HRC 60-62 consistency before assembly.
What this means for your procurement decision
Bearing steel directly impacts your maintenance costs and equipment uptime. By choosing Ouna Bearings — manufactured with proven materials, precise heat treatment, and rigorous quality control — you minimize unplanned downtime and extend service intervals.
For best performance, always provide your operating conditions (load, speed, temperature) when confirming order specifications, allowing us to validate the material treatment for your application.
Recently Posted
-
Made in Luoyang – China‘s Bearings Have Come of Age. Here‘s Why You Should Take Notice
July 28, 2026For international buyers who have hesitated to source precision bearings from China, the evidence is now overwhelming: China‘s bea
Read More -
ORT Series Rotary Table Bearings – The Smart Buyer‘s Choice for High‑Precision CNC Applications
July 28, 2026For CNC machine tool builders, the rotary table bearing is a mission-critical component. Its performance directly determines posit
Read More -
Seize the Humanoid Robot Boom – The Bearing Market‘s Biggest Growth Opportunity
July 28, 2026The humanoid robot industry is transitioning from research labs to commercial production—and precision bearings are at the center
Read More -
China’s Bearing Industry Has Come of Age – Here’s Why Global OEMs Are Paying Attention
July 28, 2026If you have historically sourced precision bearings only from traditional European and Japanese manufacturers due to quality conce
Read More
Contact Us
Recommended Products
-
Thin-Walled Crossed Roller Bearings ORA 20013NegotiableMOQ: 5 Pieces -
Thin-Walled Crossed Roller Bearings ORA 19013NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORA 6008NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORA 5008NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORE 15025NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORE 14016NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORE 2508NegotiableMOQ: 5 Pieces
-
Thin-Walled Crossed Roller Bearings ORE 2008NegotiableMOQ: 5 Pieces
-
OKLDF Thrust Angular Contact Ball Bearings Series OKLDF 150NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 200NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 150NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 120NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 100NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 80NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 50NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 260NegotiableMOQ: 5 Pieces
-
High Precision Rotary Table Bearings ORT 180NegotiableMOQ: 5 Pieces
-
OKLDF Thrust Angular Contact Ball Bearings Series OKLDF 120NegotiableMOQ: 5 Pieces
-
OKLDF Thrust Angular Contact Ball Bearings Series OKLDF 325NegotiableMOQ: 5 Pieces
-
OKLDF Thrust Angular Contact Ball Bearings Series OKLDF 580NegotiableMOQ: 5 Pieces
