Description
Product Overview
The Regal Rexnord Rollway Bearings 6311ZZC3EMQ is a heavy-duty, deep groove ball bearing engineered for demanding HVAC and industrial motor applications. Featuring a 55mm bore (inner diameter), double metal shields (ZZ), C3 internal radial clearance, and Electric Motor Quality (EMQ) construction, this bearing delivers long service life, reduced vibration, and consistent performance in high-speed rotating equipment.
Key Features
- 55mm inner diameter (bore) for precise shaft fit
- Double-shielded (ZZ) design protects against contaminants and retains lubrication
- C3 internal clearance — greater than standard, ideal for applications with elevated operating temperatures or press-fit installations
- EMQ (Electric Motor Quality) grade — tighter tolerances for reduced noise, vibration, and heat in electric motor applications
- Deep groove ball bearing geometry supports both radial and axial loads
- Pre-lubricated with high-quality grease for maintenance-free operation
- Manufactured by Regal Rexnord under the trusted Rollway Bearings brand
Specifications
- SKU: 6311ZZC3EMQ
- Bearing Series: 6311
- Inner Diameter (Bore): 55mm
- Shield Type: Double Shielded (ZZ)
- Internal Clearance: C3 (greater than normal)
- Quality Grade: EMQ (Electric Motor Quality)
- Bearing Type: Deep Groove Ball Bearing
- Brand: Regal Rexnord / Rollway Bearings
Common Applications
- HVAC blower and fan motors
- Condenser and evaporator fan assemblies
- Electric motors and pump drives
- Industrial rotating machinery requiring low-noise, high-precision bearings
- Belt-driven and direct-drive HVAC equipment
Why Choose EMQ Grade?
EMQ-grade bearings are manufactured to tighter dimensional and geometric tolerances than standard bearings, resulting in significantly lower noise and vibration levels. This makes the 6311ZZC3EMQ an ideal drop-in replacement or upgrade for electric motors in HVAC systems where quiet operation and extended bearing life are critical.
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