GQZ 6312-2Z/C3 Deep Groove Ball Bearing 60×130×31mm Double Shielded C3 Clearance

6312-2Z/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.

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 6312-2Z/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 6312-2Z/C3?

60×130×31 mm deep groove ball bearing.

Q3: When to select C3 clearance?

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