6307‑2RS1/C3 Double Contact Rubber Sealed Deep Groove Ball Bearing 35×80×21mm C3 Clearance High Temp Heavy Load Motor Bearing

The 6307‑2RS1/C3 single row deep groove ball bearing is equipped with 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 avoid bearing seizure. Double contact rubber seals effectively block dust, water mist and contaminants while retaining internal grease. Widely applied to high-temp heavy-duty industrial motors, water pumps, blowers, small compressors and agricultural transmission machinery.

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Model

6307‑2RS1/C3

Inner Diameter (ID)

35 mm

Outer Diameter (OD)

80 mm

Width

21 mm

Structure

Single Row Deep Groove Ball Bearing

Seal Type

2RS1 Double Contact NBR Rubber Seals

Internal Clearance

C3 Increased Radial Clearance

Material

GCr15 High Carbon Chrome Steel

Cage

Stamped Steel Sheet Cage

Basic Dynamic Load Rating

35.1 kN

Basic Static Load Rating

19.0 kN

Limiting Rotating Speed (Grease)

5600 r/min

Net Weight

0.46 kg

Working Temperature Range

-30℃ ~ 120℃

Gear Type (if any)

N/A

Full technical data and drawings available upon request

• C3 extra radial clearance eliminates locking risk caused by shaft and ring thermal expansion under high speed and high operating temperature
• Double-sided 2RS1 contact rubber seals deliver outstanding dustproof and splash-proof performance, extend grease service cycle and cut maintenance frequency
• Low friction sealing structure ensures low noise, low vibration and stable continuous rotation for heavy-duty motors
• Excellent radial load capacity, withstand moderate bidirectional axial loads for various medium-heavy industrial working conditions
• High-hardness chrome steel rings and balls provide superior wear resistance and long service lifespan
• 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-temperature medium & heavy-duty industrial electric motors
• Water pumps, ventilation blowers and small air compressors
• Agricultural transmission and harvesting equipment
• Medium-heavy load production line machinery with heat buildup

Ideal for customers looking for robust 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