61856 INA deep groove ball bearing

INA 61856 Thin Section Deep Groove Ball Bearing (Slim Series)

The INA 61856 is a high-performance rolling component engineered for applications with strictly limited installation space. As part of the thin-section series, it features a large 280 mm bore with an outer diameter of only 350 mm. This geometry allows for high shaft rigidity while minimizing the overall weight of the bearing arrangement. Manufactured from premium bearing steel by the Schaeffler Group, it guarantees running precision and low frictional torque, which is vital for modern machinery design.

Application

• Robotics & Automation: Main rotation axes for large industrial robots and manipulators.
• CNC Machine Tools: Support for large spindles and rotary tables requiring precision with high-diameter clearance.
• Aerospace: Antenna rotation mechanisms, radar systems, and positioners.
• Medical Engineering: Large-scale diagnostic equipment such as CT scanners.
• Industrial Machinery: Precision drums and large-diameter rollers in printing and textile machines.

Technical Specification

• Manufacturer: INA (Schaeffler Group - Germany).
• Designation: 61856.
• Dimensions: 280 mm (ID) x 350 mm (OD) x 33 mm (Width).
• Internal Clearance: CN (Normal) – optimal for standard technical fits.
• Design: Open type – allows for custom lubricant selection.
• Cage: Precision-guided steel or brass cage (depending on the specific execution).

Features and Benefits

• Extreme Space Efficiency: The slender profile enables the design of lighter and more compact machinery.
• High Running Accuracy: Production to Schaeffler standards ensures minimal radial runout, enhancing equipment performance.
• Low Frictional Torque: Precise raceway and ball geometry reduce heat generation and energy consumption.
• Mounting Versatility: The cylindrical bore allows for easy shaft mounting via shrink or press fits.
• Premium Durability: Specialized heat treatment of the steel ensures fatigue resistance even at large diameters.

Why Choose This Product

By choosing the INA 61856 bearing, you are investing in a product that solves complex design challenges regarding space constraints. In 280 mm bore applications where every millimeter of the outer diameter counts, the INA thin-section series is unrivaled in precision and durability. It is a guarantee of German reliability, ensuring stable operation for your most critical production systems.