GQZ 6304-2Z/C3 Single Row Deep Groove Ball Bearing 20×52×15mm Double Metal Shielded C3 Clearance

6304-2Z/C3 is single row deep groove ball bearing. 2Z stands for double-sided metal dust shields; C3 means enlarged internal clearance to offset thermal expansion. It bears radial load and minor bidirectional axial load, pre-greased for direct assembly. Widely applied in motors, pumps, fans, conveyors and medium-load rotary machinery.

Formal quotation will be sent within 24 hours upon your inquiry.

Model:

6304-2Z/C3

Dimensions:

d20 mm, D52 mm, B15 mm

Net weight:

approx 0.155 kg

Structure:

Single row deep groove ball bearing

Material:

GCr15 bearing chrome steel, stamped steel cage

Clearance:

C3 increased clearance

Sealing:

2Z double-side metal shield

Alternative versions:

Open / 2RS available

Complete dimension drawings and load data available on request.

1. C3 clearance accommodates thermal expansion during high-temperature operation
2. 2Z double metal shields prevent dry dust ingress
3. Supports radial load plus slight bidirectional axial load
4. Low friction, stable quiet medium-speed rotation
5. Standard metric size for convenient equipment replacement
6. Customizable: OEM laser marking, high temperature grease

• Electric motors, cooling fans and blowers
• Water pumps and small compressor assemblies
• Belt conveyors, textile and packaging machinery
• Agricultural equipment and general transmission units
• Medium-speed rotary positions under dusty conditions

25 years professional bearing manufacturer, products exported globally.

Strict raw material inspection and precision grinding process.

24-hour technical support for model selection.

Ample stock for machinery distributors.

Precise dimensions and stable service performance.

GCr15 raw material quenching & tempering treatment

Precision superfinishing for bearing rings and steel balls

Shield assembly and pre-lubrication

Dimension, clearance and rotational noise testing

If you need 6304-2Z/C3 deep groove ball bearings:

Send inquiry to obtain below supports:

• Quick quotation within 24 hours
• Professional matching suggestions
• Optional open / 2RS solutions
• Competitive factory direct price
• Contact our sales team for full datasheets and formal offer.

Q1: What do 2Z and C3 represent?

2Z = double-sided metal dust shield; C3 = larger clearance than CN standard.

Q2: Main dimensions of 6304-2Z/C3?

20×52×15 mm deep groove ball bearing.

Q3: When to select C3 clearance?

Suitable for high speed, tight fit and equipment with significant temperature rise.