products details

Home Products

Deep Groove Ball Bearing 62304 2RS Sealed 20x52x21mm for Electric Motors and Heavy Pumps

Name: Deep Groove Ball Bearing 62304 2RS Sealed 20x52x21mm for Electric Motors and Heavy Pumps
Brand: Wuxi Guangqiang Bearing Trade Co.,Ltd
SKU: 62304 2RS
Price: 20.00 USD
Availability: InStock

Brand Name:	GQZ or OEM
Model Number:	62304 2RS
MOQ:	2
Price:	15-25 USD
Delivery Time:	5-7 working days after payment
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

Jiangsu, China

Certification:

ISO9001：2015

Product Name:

Deep Groove Ball Bearing

Model:

62304 2RS

Size:

20x52x21mm

Application:

Electric Motors And Heavy Pumps

Packaging Details:

Standard Export Packaging

Supply Ability:

30000 pieces per month

Highlight:

62304 2RS sealed ball bearing

20x52x21mm deep groove bearing

ball bearing for electric motors

Product Description

Deep Groove Ball Bearing 62304 2RS Sealed 20x52x21mm for Electric Motors and Heavy Pumps

Product Overview

The 62304 2RS Deep Groove Ball Bearing is a wide-series single-row ball bearing equipped with dual contact rubber seals for superior protection against dust and moisture. Engineered to handle heavy radial loads and moderate axial loads in both directions, it is widely used in industrial electric motors, centrifugal pumps, and automotive transmissions where enhanced sealing and extended grease life are strictly required.

Technical Specifications

Model: 62304 2RS (Interchangeable with 62304-2RS1 / 62304 DDU / 62304 LLU)
Inner Diameter (ID): 20 mm
Outer Diameter (OD): 52 mm
Width: 21 mm
Structure: Wide Single Row Deep Groove Ball Bearing (Dual Rubber Sealed)
Material: High-Purity Chrome Steel (GCr15 / SAE 52100)
Cage Material: Pressed Steel Cage (Standard) / Polyamide Cage (Optional)

Key Advantages

Wide inner and outer ring design provides larger grease reservoir capacity for longer maintenance-free service life.
Dual rubber contact seals (2RS) effectively block dust, water, and contaminants while retaining factory-filled lubricant.
High load-carrying capacity supports heavy radial forces and bi-directional axial loads during continuous duty.
Low friction and quiet operation achieved through precision-ground raceways and high-grade steel balls.
Custom grease and clearance options available (such as C3 radial clearance or high-temperature polyurea grease).

Deep Groove Ball Bearing 62304 2RS Sealed 20x52x21mm for Electric Motors and Heavy Pumps

Quality Control

Raw material inspection: Ultrasonic flaw detection and chemical composition verification of bearing-grade chrome steel.
Precision machining process: CNC precision grinding of deep raceway grooves for optimal ball conformity.
Heat treatment control: Automated quenching and tempering for maximum wear resistance and dimensional stability.
Clearance & rotation testing: 100% verification of radial internal clearance, grease fill volume, and vibration levels (Z2/Z3).

Deep Groove Ball Bearing 62304 2RS Sealed 20x52x21mm for Electric Motors and Heavy Pumps

Q1: Can you provide custom bearings or special grease fills?
Yes, we support OEM and custom production based on drawings, including C3 radial internal clearance, high-temperature Viton seals, and specialty synthetic greases.

Q2: What is the difference between the 62304 2RS and the standard 6304 2RS?
Both share the same 20 mm bore and 52 mm outer diameter, but the 62304 2RS features a wider 21 mm width (compared to 15 mm on the 6304 2RS), allowing for a larger grease chamber and longer service life without relubrication.

Q3: Does the 62304 2RS require relubrication during operation?
No, it comes pre-filled with high-performance lithium-base bearing grease and is sealed for life on both sides under normal operating temperatures (-30°C to +110°C).

Q4: What quality certifications do your bearings hold?
Our manufacturing facilities operate strictly under ISO 9001 and IATF 16949 quality management standards to ensure full traceability and consistent industrial quality.

Q5: What are your shipping terms and delivery times?
We support EXW, FOB, CIF, and DDP terms via sea, air freight, or international express. Standard models ship within 7–15 days, while custom batches take 25–45 days.

Tags:

Automotive Bearings

Agriculture Bearings

Robot Bearings