6306‑2RS1/C3 Double Contact Rubber Sealed Deep Groove Ball Bearing 30×72×19mm C3 Clearance High Temp Medium Load Motor Bearing

The 6306‑2RS1/C3 single row deep groove ball bearing adopts double-sided 2RS1 contact NBR rubber seals and C3 enlarged radial clearance. The expanded internal clearance compensates thermal expansion under long-term high-speed and high-temperature running to prevent bearing locking. Double contact rubber seals effectively isolate dust, water mist and impurities and retain internal grease. Widely used in high-speed medium-large motors, water pumps, blowers and medium-load high-temperature transmission equipment.

Get a quote within 24 hours for your project

Full technical data and drawings available upon request

• C3 enlarged radial clearance avoids seizure risk caused by thermal expansion of shaft and bearing rings under high rotating speed and high working temperature
• Double-sided 2RS1 contact rubber seals deliver excellent dustproof and splash-proof performance, extend grease service cycle and cut maintenance frequency
• Low friction, low noise and stable smooth rotation, fully meet operating requirements of medium and large high-speed motors
• High radial load capacity, capable of bearing moderate bidirectional axial loads for various medium-load industrial working conditions
• High-hardness chrome steel raceways and steel balls feature outstanding wear resistance and long service life
• Custom precision grades, special high-temperature grease and OEM personalized processing are supported

Helps reduce maintenance cost and improve machine performance

This bearing is widely used in:

• High-speed medium & large industrial electric motors
• Water pumps, ventilation blowers and small compressors
• Agricultural transmission and harvesting machinery
• Medium-load high-temperature production line equipment

Ideal for customers looking for reliable C3 clearance rubber sealed bearing solutions

• Over 25 years professional industrial bearing manufacturing experience
• Products exported to more than 50 countries worldwide
• Mature technical capacity for OEM and customized bearing projects
• Strict full-process quality inspection covering raw material to finished goods before delivery
• Fast professional technical support and formal quotation within 24 hours
• Stable mass production and sufficient stock for long-term bulk cooperative clients

We focus on quality, reliability, and long‑term partnership

• Raw material composition and hardness inspection
• Precision CNC turning, grinding and superfinishing process
• Uniform constant high-temperature heat treatment control
• Clearance, noise, rotational flexibility and load performance testing
• Full dimensional tolerance and appearance visual inspection before packaging

Ensuring consistent stable performance for every bearing batch

Looking for a stable supplier of C3 clearance contact rubber sealed deep groove bearings?
Send your inquiry to get:

• Fast factory quotation within 24 hours
• Professional engineer technical matching guidance
• Customized bearing parameter matching schemes
• Competitive factory direct bulk price

Contact us now for more product details