C 6909 V CARB Full Complement Cylinder Roller Bearing No Cage 45x68x40mm

1. Product Overview

C6909V is standard CARB self-aligning full complement cylindrical roller bearing, also named ring roller bearing. Suffix V stands for full roller structure without steel retainer. Standard metric dimensions: inner bore d=45mm, outer diameter D=68mm, overall width B=43mm.

Adopts unique curved symmetrical roller and arc raceway self-aligning design, which can simultaneously compensate shaft bending deformation, assembly parallel offset and axial thermal expansion. Effectively eliminate roller edge stress, abnormal noise and premature bearing seizure caused by installation errors and temperature changes. The full roller layout maximizes the quantity of rolling elements inside the bearing, delivering far higher radial load capacity than caged cylindrical roller bearings, ideal for continuous low-speed heavy-load operation scenarios.

Inner ring, outer ring and cylindrical rollers are all made of fully quenched GCr15 bearing steel with ultra-precision mirror grinding curved raceway, featuring stable rolling performance and outstanding wear resistance. Widely used for printing press main rollers, heavy material conveyor rollers, papermaking calender rollers, textile heavy calendaring equipment, light lifting and construction heavy transmission machinery.

2. Technical Specifications

3. Core Advantages

1. Exclusive CARB curved roller self-aligning mechanism, three-dimensional compensation for shaft deflection, mounting offset and thermal axial elongation, prevent local edge abrasion and roller stuck.
2. Cage-free full complement roller structure, fills maximum number of rollers inside bearing cavity, ultra-high radial rigidity and heavy load bearing capacity, perfect for long-term heavy continuous load equipment.
3. All rolling parts adopt integral quenching and mirror superfinishing craft, high surface hardness, stable precision retention under long-time low-speed heavy rotation, extend service life greatly.
4. Symmetrical arc inner & outer raceway, evenly distributed contact stress on each roller, stable smooth rotation even with slight assembly misalignment and low running noise.
5. Wide compact integrated bearing design, single bearing replaces combined cylindrical + spherical roller bearing sets, simplify shaft structure and cut equipment assembly cost.
6. Large internal grease storage cavity, store sufficient lubricating grease to prolong refueling maintenance cycle, adapt to low-maintenance industrial workshop environments.
7. Standard metric universal installation dimensions, fully interchangeable with international standard CARB series bearings, no modification required for shaft and housing seats.
8. Complete customized solutions: stainless steel anti-rust material, OEM laser marking on outer ring, neutral export carton anti-rust packaging, special grease filling for extreme temperature.

4. Application Scenarios

C6909V CARB full roller self-align bearing is core heavy-load deviation compensation transmission spare part for industrial heavy machinery:

• Large printing machine main pressure roller, heavy paper feeding tension roller support bearing assemblies
• Heavy bulk material conveyor drive roller, roller kiln transport roller rotary support positions
• Papermaking machinery calender roller, wet paper press heavy load rotary transmission structures
• Textile heavy fabric calender, non-woven production line large transmission roller bearings
• Light lifting machines, small construction heavy roller drive assemblies

Interchangeable aftermarket 45mm bore CARB series self-align full roller bearing
Cost-effective multi-direction misalignment compensation heavy radial load bearing solution for printing OEM, papermaking, textile and heavy conveyor equipment bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of full CARB self-align ring roller bearings including C6909V
• C6909V fully dimensionally interchangeable with global standard CARB bearings, consistent self-compensation range, load rating and assembly tolerance standards.
• Complete OEM & ODM customization service supporting stainless steel anti-corrosion material, special high/low temperature grease filling and custom surface marking.
• Strict full pre-delivery inspection flow: GCr15 raw material hardness test, roller dimensional sorting screening, long-cycle heavy load rotation aging test, repeated misalignment fatigue wear test.
• Professional CARB bearing engineering team provides one-on-one shaft deflection matching, lubricant selection and installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory bulk wholesale price for long-term printing, papermaking, textile and heavy conveyor machinery manufacturers.

We specialize in CARB curved roller self-compensation structure, full roller heavy-load layout, universal compact mounting design and long-term win-win cooperation with global industrial heavy transmission spare parts buyers.

6. Quality Control

• Raw material chemical composition and hardness inspection for GCr15 bearing steel inner ring, outer ring and roller blanks
• Precision forging, quenching & tempering, ultra-mirror curved raceway finish grinding processing for bearing rings
• Cylindrical roller high-temperature quenching, superfinishing and automatic dimensional sorting production line
• Cage-free full roller assembly process, strictly control internal roller clearance and assembly preload
• Targeted classified performance testing: C6909V long-cycle heavy radial load aging test, repeated misalignment compensation fatigue test, thermal expansion deformation wear detection
• Full dimensional tolerance and surface defect recheck before anti-rust oil coating and export carton packaging shipment

Every production batch of C6909V bearings undergoes full sampling heavy-load rotation test to ensure stable long-term self-align heavy-load support performance in printing, papermaking, textile and heavy conveyor industrial equipment.

7. Get A Quote Now

If you need C6909V CARB self-align full complement cylindrical roller bearings for printing presses, papermaking calenders, textile heavy machinery and heavy conveyor equipment maintenance & OEM bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory formal quotation reply within 24 hours
• One-on-one misalignment matching, grease grade selection and shaft housing installation technical guidance from professional CARB series bearing engineers
• Customized bearing performance solutions including high-temperature resistant grease and stainless steel upgrade options
• Competitive direct factory bulk wholesale price for large-volume spare parts orders

Provide your required purchase quantity, equipment heavy load condition and operating temperature environment to obtain detailed sealed formal quotation document.

8. FAQ