SKF 3216 A 2 Row Angular Contact Ball Bearing - 80 mm ID, 140 mm OD 44.4 mm Race Width

SKF 3216 Series Angular Contact Ball Bearing, 80mm Inside Diameter, 140mm Outside Diameter - 3216 A

This angular contact ball bearing is designed to support combined radial and axial loads in rotating machinery commonly found in automation, electronics and mechanical systems. It employs a dual-row configuration with steel rolling elements and a parallel bore to provide stable support for shafts operating at elevated speeds, while an open-ended design facilitates inspection and lubrication access.

Features and Benefits:

• 30° contact angle enhances axial load-carrying capacity
  4300 r/min limiting speed facilitates high-speed operation
  106 kN dynamic load rating extends service under fluctuating loads
  95 kN static load rating resists deformation under heavy stationary loads
  Sheet-metal cage reduces friction and improves heat dissipation
  CN internal clearance allows precise preload and thermal compensation

Applications

• Suitable for spindle assemblies in automated manufacturing equipment
  Ideal for servo motor shafts requiring axial and radial support
  Used with rotary stages in precision electronics inspection systems
  Can be used for gearbox input shafts subject to combined loading
  Used for industrial fans and blowers operating at high rotational speeds

What material are the rolling elements MADE from and how does that affect wear?

The balls are steel, which provides high hardness and predictable wear characteristics under standard lubrication regimes.

How does the parallel bore influence installation?

A parallel bore permits straightforward shaft fitment and alignment using standard press or shrink-fit methods without tapered-housing adjustments.

What maintenance access does the open end provide?

The open design allows direct re-lubrication and Visual condition checks without removal of housing covers.

How does the cage material impact thermal behaviour?

The sheet-metal cage conducts heat away from the raceways more efficiently than polymer cages, aiding temperature control during sustained high-speed operation.