61860 -M INA deep groove ball bearing

INA 61860-M Thin Section Deep Groove Ball Bearing (With Brass Cage)

The INA 61860-M is an advanced rolling component from the thin-section series (ISO 10), engineered for applications with strictly limited installation space. With a very large 300 mm bore, its outer diameter is only 380 mm, allowing it to be mounted on thick shafts while maintaining a compact housing. The standout feature is the solid brass cage (M), which provides superior ball guidance, high mechanical rigidity, and excellent heat dissipation, essential for demanding industrial environments.

Application

• Robotics & Automation: Main rotation axes for large-scale industrial robots and manipulators.
• CNC Machine Tools: Support for large spindles and rotary tables requiring precision with large bore diameters.
• Aerospace & Defense: Radar systems, scanners, and antenna positioning mechanisms.
• Renewable Energy: Compact bearing arrangements in generators and wind turbine components.
• Medical Engineering: Large diagnostic equipment such as CT scanners.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 61860-M.
• Dimensions: 300 mm (ID) x 380 mm (OD) x 38 mm (Width).
• Cage Type: M – Solid brass cage (ball-guided).
• Internal Clearance: CN (Normal) – optimal for standard fitting.
• Design: Open type, precision-ground raceways.

Features and Benefits

• Extreme Space Efficiency: The slender profile of the 618 series enables the design of lighter and more compact machinery without sacrificing shaft rigidity.
• Brass Cage Advantage: Provides a higher safety margin under boundary lubrication conditions and resists chemical corrosion and high temperatures.
• Low Frictional Torque: Precision ball and raceway geometry minimize resistance, increasing overall system energy efficiency.
• High Running Accuracy: Manufacturing to Schaeffler standards guarantees minimal radial and axial runout.
• Exceptional Fatigue Life: High-purity metallurgical steel extends maintenance intervals and reliability.

Why Choose This Product

By choosing the INA 61860-M bearing, you are investing in a product that solves complex design challenges. In 300 mm bore applications where weight and dimensions are critical, this thin-section series with a brass cage is unrivaled. It is a guarantee of German reliability, ensuring stable operation for your most critical production and robotic systems.