6307-2RS1/C3GJN Deep Groove Ball Bearing 35x80x21mm Double 2RS1 Rubber Seal C3GJN Special Clearance Bearing

6307-2RS1/C3GJN single row deep groove ball bearing, standard metric dimension 35×80×21mm.
Code Definition

• 6307: Medium heavy load deep groove ball base model, larger steel balls for superior radial load capacity
• 2RS1: Double-sided contact rubber lip seal, fully isolates dust, moisture and fine abrasive particles
• C3GJN: Custom widened C3 radial clearance matched with exclusive anti-high-temperature oxidation special grease

Classic deep groove raceway bears radial load and slight bidirectional axial load simultaneously. Dual contact rubber seals lock internal lubricant and block external pollutants. Pre-filled exclusive GJN high-temperature grease, effectively prevents grease volatilization and dry friction under continuous high-speed temperature rise. Widely used for medium heavy-duty drive motors, large cooling fans, conveying rollers, packaging machinery and general industrial transmission assemblies.

Drawings and high-temperature low-noise durability test reports available on request.

1. Custom C3GJN special clearance eliminates bearing seizure caused by high-speed thermal expansion after long-time continuous operation
2. Double 2RS1 contact rubber seals fully block dust, water mist and tiny metal abrasive debris
3. Matched GJN high-temperature anti-oxidation grease avoids grease loss and dry burning under sustained heating
4. Thickened super-finished steel balls deliver outstanding heavy load capacity, low friction, quiet and stable rotation
5. Universal deep groove structure bears radial load and light bidirectional axial load
6. Global unified standard dimensions for direct one-to-one aftermarket replacement
7. Reinforced riveted stamped steel cage prevents ball displacement under long-term heavy vibration
8. Customizable precision grade, special lubricant formula and outer ring laser marking

• Medium heavy-duty industrial drive motors, large ventilation cooling fans and blowers
• Heavy load conveyor rollers, automatic packaging and logistics transmission machinery
• Medium textile processing equipment and agricultural heavy rotary components
• General factory auxiliary machinery and medium-speed processing equipment
• Construction light machinery and large industrial ventilation assemblies

Suitable for OEM supporting production and aftermarket maintenance of medium heavy load general industrial equipment.

25 years specialized production of 63 series heavy load deep groove ball bearings including 6307-2RS1/C3GJN special clearance medium motor dedicated bearings.

Global unified standard dimensions, fully interchangeable with mainstream imported equivalent bearings.

Complete OEM & ODM customization service for clearance grade, high-temperature special grease and outer ring identification marking.

Strict full-process inspection: raw material hardness test, steel ball sorting, long-cycle high-temperature noise aging and C3GJN clearance batch screening.

Professional bearing engineers provide medium heavy load matching, shaft interference fit and high-temperature anti-dry lubrication guidance within 24 working hours.

Factory direct bulk wholesale price, stable continuous mass supply for global medium heavy industrial machinery spare part buyers.

• Raw material composition and hardness inspection for GCr15 inner ring, outer ring and steel ball blanks.
• CNC precision turning, multi-cycle stress relief tempering and ultra-precision raceway superfinishing.
• Steel ball high-temperature quenching, mirror polishing and automatic dimensional grouping sorting.
• Stamped steel cage forming, quantitative GJN special high-temperature grease filling and 2RS1 rubber seal press-fitting curing process.
• Performance verification tests: high-temperature continuous rotation aging, dust-water mixed environment sealing durability, C3GJN clearance stability long-cycle test.
• Final full dimension, bore roundness and raceway surface reinspection before anti-rust oil coating and neutral moisture-proof export carton packaging.

Each finished production batch undergoes high-temperature high-speed simulation test to ensure stable sealed operation performance under temperature rise conditions.

Submit purchasing demand for 6307-2RS1/C3GJN special clearance bearings applied to medium heavy-duty motors, large cooling fans and heavy conveyor equipment.
Full one-stop professional services after inquiry submission:

1. Official standardized quotation document delivered within 24 working hours
2. Technical support for medium heavy load matching, shaft press-fit installation and high-temperature long-life lubrication
3. Custom bearing performance upgrades: P5 high precision grade, enhanced high-temperature synthetic grease
4. Competitive factory direct bulk unit price for large-volume single model orders

Please state order quantity and actual working conditions (continuous high speed, easy temperature rise, slightly dusty humid environment) to receive complete formal quotation documents.