The Timken Company RCSM 3 4 Cartridge Bearing Unit

Description:

The Timken Fafnir RCSM 3/4 cartridge bearing unit is used to support a 3/4-inch rotating shaft while reducing vibration and noise in industrial power transmission and HVAC applications. Commonly installed in air handling units, ventilation equipment, conveyor systems, heating equipment, and other machinery utilizing rubber cartridge mounted bearings. Maintenance teams, OEMs, and system integrators use this bearing unit for replacement, repair, retrofit, and equipment overhaul to restore reliable shaft support and minimize equipment downtime.

Applications:

The Timken Fafnir RCSM 3/4 features a synthetic conductive rubber cartridge housing with an RA012RR insert bearing and eccentric locking collar for secure shaft retention and quiet operation. Manufactured in the USA (plant code A66 on some units), it is designed for HVAC equipment, domestic heating systems, ventilating equipment, light-duty conveyors, and other industrial applications where vibration isolation and low-noise performance are essential.

Technical Specifications:

• Manufacturer: Timken Fafnir
• Manufacturer Part Number (MPN): RCSM 3/4
• Product Type: Cartridge bearing unit
• Series: RCSM Series
• Bearing Number: RA012RR
• Shaft Size: 3/4 in (19.05 mm)
• Bearing Type: Ball bearing
• Locking Style: Eccentric locking collar
• Housing Type: Rubber cartridge mount
• Housing Material: Conductive synthetic rubber
• Housing Outside Diameter: 2.531 in (64.3 mm)
• Housing Width (A): 1.000 in (25.4 mm)
• Overall Width (B1): 1.220 in (31 mm)
• Lubrication: Factory prelubricated, non-relubricatable
• Dynamic Radial Load Rating: 3,190 lbf (14,200 N)
• Static Radial Load Rating: 1,460 lbf (6,500 N)
• Country of Manufacture: USA (A66 marking may appear on manufactured units)

Common Replacements:

• Timken RCR 3/4
• Timken CR 3/4
• Timken RA012RR bearing insert