Bearing Steel Needle Roller

Bearing Steel Needle Roller Product Overview
GY specializes in manufacturing high-end needle rollers with diameters ranging from 0.5 mm × 1.5 mm to 6 mm × 40 mm, achieving a precision of 0.001 μm. Our products are primarily made of bearing steel, stainless steel, stainless iron, high-carbon steel, ZOCM, and other customizable materials.

Bearing Steel Needle Roller Core Advantages

1. High Load Capacity

   • Material Properties: Bearing steel (e.g., GCr15, SAE 52100) achieves a hardness of HRC 60-65 after heat treatment, enabling it to withstand extreme contact stress (e.g., 3000-4000 MPa). Ideal for heavy-duty or impact loads.

   • Line Contact Design: The line contact (as opposed to point contact) between needle rollers and raceways ensures uniform pressure distribution, providing several times higher load capacity than ball bearings.

2. Wear Resistance and Long Service Life

   • Heat Treatment Process: Quenching and low-temperature tempering create a martensitic structure, delivering excellent surface wear resistance while maintaining core toughness.

   • Surface Finish: Precision grinding achieves a surface roughness of Ra 0.05 μm, reducing friction and wear, and extending service life (especially under high-speed or poor lubrication conditions).

3. Space Saving and Lightweight Design

   • Small Diameter Design: Needle rollers can be as small as 1 mm in diameter, featuring low radial cross-sectional height, making them suitable for compact structures with limited space (e.g., transmissions, aircraft engines).

   • Optimized Length-to-Diameter Ratio: The high length-to-diameter ratio (typically 4-10 times) maximizes the load-bearing contact area within confined spaces.

4. High-Speed Adaptability

   • Low Inertial Force: The small mass of needle rollers reduces centrifugal force during high-speed rotation, minimizing the risk of slippage (suitable for applications exceeding 10,000 rpm).

   • Lubrication Compatibility: Compatible with grease, oil mist, or solid lubricants, reducing temperature rise under high-speed conditions.

5. Precision and Stability

   • Strict Dimensional Tolerances: Meets ISO accuracy grades P4/P2 (tolerance: ±0.002 mm), ensuring smooth operation and low vibration.

   • Deformation Resistance: High rigidity design minimizes deformation under load, making it ideal for precision transmission applications (e.g., machine tool spindles, robotic joints).

6. Economic Advantages

   • Replacement of Plain Bearings: In reciprocating or oscillating mechanisms, the low friction coefficient (0.001-0.005) of needle rollers reduces energy consumption by over 30%.

   • Low Maintenance Costs: Sealed designs enable lifelong lubrication, reducing downtime and maintenance frequency.

Bearing Steel Needle Roller Common Applications

• Automotive Industry: Applications such as transmissions, clutches, steering systems, engine camshafts, and chassis suspensions utilize needle roller bearings (incorporating needle rollers) for efficient power transmission and support.

• Machinery Manufacturing: Needle rollers are used in machine tool spindles, guide rails, textile machinery transmission components, and printing machine roller supports, where their compact design accommodates limited space.

• Hydraulic and Pneumatic Equipment: Needle rollers reduce friction in pistons and plungers within hydraulic pumps and motors, enhancing operational efficiency.

• Medical Devices: Precision rotating or sliding structures in medical equipment rely on needle rollers for stable support and low-friction movement.

• Construction Machinery: Needle rollers withstand heavy loads and adapt to complex working conditions in hydraulic cylinders and joint parts of excavators and loaders.

These applications leverage the slender structure of needle rollers to save space while reducing equipment wear and improving operational efficiency through rolling friction.

Bearing Steel Needle Roller Parameters