Timken RAO2-3/16 Pillow Block Ball Bearing Unit

Description:

The Timken Fafnir RAO2-3/16 pillow block ball bearing unit is used to support a 2-3/16 inch rotating shaft in heavy-duty industrial power transmission and material handling systems. Commonly installed in conveyors, aggregate equipment, mining machinery, agricultural equipment, and bulk material handling systems requiring rugged mounted shaft support. Maintenance teams, OEMs, and system integrators use this bearing unit for replacement, repair, retrofit, and equipment overhaul to restore reliable shaft alignment and minimize equipment downtime.

Applications:

The Timken Fafnir RAO2-3/16 is a heavy-duty two-bolt pillow block bearing featuring a GN203KRRB wide inner ring ball bearing with an eccentric locking collar for secure shaft retention in demanding operating conditions. Its cast iron housing and shroud seal design make it well suited for mining, aggregate processing, conveyor systems, agricultural equipment, manufacturing facilities, and other industrial applications where high radial loads and dependable bearing performance are required.

Technical Specifications:

• Manufacturer: Timken Fafnir
• Manufacturer Part Number (MPN): RAO2-3/16
• Product Type: 2-bolt pillow block ball bearing unit
• Series: RAO Heavy Series
• Bearing Type: Mounted ball bearing
• Bearing Number: GN203KRRB
• Shaft Size: 2-3/16 in (55.6 mm)
• Locking Style: Eccentric locking collar
• Housing Style: Two-bolt pillow block
• Housing Material: Cast iron
• Seal Type: Shroud seal
• Base to Center Height: 3.063 in (77.8 mm)
• Overall Length: 11.311 in (287.3 mm)
• Overall Height: 6.031 in (153.2 mm)
• Bolt Hole Spacing: 9.000 in (228.6 mm)
• Dynamic Load Rating: 17,800 lbf (79,300 N)
• Static Load Rating: 10,000 lbf (44,600 N)
• Weight: Approximately 17.5 lb (7.94 kg)

Common Replacements:

• Timken RSAO2-3/16
• Dodge P2B-SC-203R equivalent
• NTN UCP211D1 equivalent