- 1-800-247-4119
- Fast Delivery / 1–3 Days in Most States
- Business Pricing / Bulk Discounts Available
- API Certified / OEM-Approved Lubricants
- Trusted by Mechanics, Fleets & Operators
$40.00
KOYO IR-404824 Inner Needle Roller Bearing Race – Precision Inner Ring for Needle Bearing Assemblies
The KOYO IR-404824 is a high-precision inner race (inner ring) designed for use with needle roller bearings in demanding industrial and automotive applications. With a 2.5-inch inner diameter and 3-inch outer diameter, this inner ring is engineered to provide a hardened and ground raceway surface when the shaft is not suitable for direct roller contact.
Ideal for use in transmissions, gearboxes, pumps, and heavy-duty machinery, the IR-404824 ensures optimal load distribution, minimal friction, and extended bearing life. It is often used in conjunction with drawn cup or full-complement needle roller bearings where the shaft cannot be hardened or ground.
Manufactured to KOYO’s stringent quality standards, this component is crafted from high-grade bearing steel and heat-treated for superior wear resistance, hardness, and dimensional stability under load and temperature fluctuations.
The KOYO IR-404824 is trusted by professionals for its reliability, exact fit, and OEM-level performance in critical rotating systems.
1–3 Days in Most States
Bulk Discounts Available
OEM-Approved Lubricants
Fleets & Operators
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