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TORRINTON IR 1612 Precision Inner Ring | Hardened Chrome Steel Raceway for Needle Roller Bearings

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Product Category: Needle Roller Bearing

Product Details

TORRINTON IR 1612 Precision Inner Ring | Hardened Chrome Steel Raceway for Needle Roller Bearings

The TORRINTON IR 1612 is a high-precision, solid inner ring specifically engineered to serve as the hardened raceway for needle roller bearing assemblies where shaft hardening is impractical or insufficient. Manufactured from high-carbon chrome steel, the raceway surface is ground and super-finished (down to 0.2 Ra) to ensure optimal geometry and minimize friction, thereby extending the service life of the entire rotating assembly. With tight dimensional tolerances (P5/ABEC 5 equivalent) and a robust surface hardness exceeding 60 HRC, the IR 1612 provides exceptional resistance to wear, shock loads, and high operational speeds common in demanding industrial environments. Designed for seamless integration into transmissions, gearboxes, construction equipment, and high-load pumping mechanisms, the TORRINTON IR 1612 ensures operational integrity and reduced maintenance frequency. Its robust design allows for maximum load distribution across the rolling elements, mitigating stress concentration and thermal buildup. Choosing TORRINTON means investing in reliability; the precision engineering minimizes internal clearance variations, ensuring consistent performance and significantly reducing the risk of premature catastrophic failure in critical machinery.

Key Features

  • Constructed from vacuum-degassed, high-purity chrome steel for maximum material fatigue resistance.
  • Ground and honed raceway surface reduces friction coefficient and operating temperature.
  • Excellent dimensional stability and tight tolerance control (P5 grade) ensures high rotational accuracy.
  • Suitable for use in highly dynamic applications requiring high speed and substantial radial load capacity.
  • Critical component for extending the lifespan of corresponding cage and roller assemblies.

Technical Specifications

Product_TypeInner Ring (Needle Roller Bearing Component)
d25 mm (Bore Diameter)
D30 mm (Outside Diameter)
B16 mm (Width)
Tolerance_ClassP5 (Metric/ISO)
MaterialHigh-Carbon Chrome Alloy Steel (52100/100Cr6 equivalent)
Raceway_Hardness60 – 64 HRC
Raceway_FinishSuperfinished (Ra
Approx_Weight0.065 kg