6318C3 Single Row Deep Groove Ball Bearing C3 Enlarged Internal Clearance 90x190x43mm High Temp Fan Heavy Industrial Transmission Equipment

The 6318C3 heavy-duty single row deep groove ball bearing is equipped with C3 enlarged internal clearance, standard dimension 90×190×43mm. The 6300 series large steel ball structure delivers superior radial load capacity and can bear slight bidirectional axial load simultaneously. C3 oversize clearance reserves enough expansion gap under long-time high-speed and high-temperature operation, effectively avoid bearing locking caused by thermal expansion of inner and outer rings. Open design allows separate assembly of ZZ metal dust shield or 2RS rubber seal, widely used in large industrial high-temperature motors, heavy cooling fans, mining conveyors, cement rotary equipment and heavy-duty transmission shafts working under high heat.

• C3 enlarged clearance design provides extra inner space to absorb thermal expansion, prevent seizure under continuous high temperature & high speed
• Oversized steel balls of 6300 series carry much heavier radial load than 60/62 series bearings with same bore size
• Superfinished raceway and steel balls realize low vibration and stable smooth rotation under long-term heavy load
• High-hardness quenched steel rings and balls own excellent wear resistance for dusty, high-temperature harsh workshop environment
• Multiple interchangeable styles: open 6318C3, dustproof ZZ shielded 6318C3ZZ, splash-proof sealed 6318C3-2RS
• Open structure supports convenient on-site grease refilling, greatly extend service life of round-the-clock running equipment

This C3 large clearance heavy deep groove bearing is widely matched to:

• Large high-temperature industrial motors, heavy axial cooling fans and generator rotor support parts
• Mining belt conveyor rollers, cement plant auxiliary rotary transmission assemblies
• Large agricultural heavy harvesters, construction machinery power drive shafts
• Textile heavy roller machines, large industrial water pumps and heavy-duty speed reducers
• All high-speed, high-temperature equipment that requires extra clearance to eliminate thermal locking risk

• 25+ years experience in large-size 6300 series C3 clearance deep groove ball bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM bulk order experience for high-temperature heavy-duty large ball bearings
• Strict C3 clearance sorting, heavy load fatigue and high-temperature rotation testing before shipment
• Fast professional technical reply within 24 hours
• Stable mass supply for long-term large motor and heavy machinery factory cooperation

• GCr15 bearing steel raw material hardness & composition inspection
• Ultra-precision grinding for inner & outer raceway and large steel balls
• Standard quenching & tempering heat treatment for uniform surface hardness
• C3 clearance grouping screening, high-temperature aging rotation test and full dimensional recheck
• Anti-rust oil treatment and shockproof reinforced carton packaging before delivery

Get a Quote Now

Looking for C3 enlarged clearance open heavy-duty 6318 deep groove ball bearing supplier?

• Fast factory quotation within 24h
• Professional large fan & high temp motor bearing technical parameter support
• Custom ZZ shield / 2RS rubber seal & special clearance solution suggestions
• Competitive bulk wholesale factory price