Rolling mill bearings

Full Complement Cylindrical Roller Bearing

A Full Complement Cylindrical Roller Bearing (FCCRB) is a high-capacity radial bearing that fits the maximum number of cylindrical rollers by omitting the cage, allowing for heavier loads in a compact space but at lower speeds due to increased internal friction from rollers contacting each other. These bearings offer high stiffness and rigidity and are essential for heavy-duty applications like cranes, material handling, and mining.

Features: Inner Ring: Integral or separable structure (optional); Outer Ring: Integral structure; Roller Arrangement: Full complement cylindrical rollers (parallel distribution, cage-free, line contact);

Accuracy : P0, P6, P5, P4;

Size: Inner Diameter: 150–1000 mm; Outer Diameter: 210–1320 mm; Width:36–272mm;

Materials: Bearing Rings & Rollers: GCr15 high-carbon chromium steel or SUS440C stainless steel ;

Special Note: Cage-free design, reducing friction interference through optimized roller arrangement, suitable for medium-low speed heavy-load scenarios;

Delivery: Standard models: 5–12 days; Customized models :Please contact the manufacturer. 

Techspecs


SPECIFICATIONS-SINGLE ROW
DesignationsBoundary dimensionsBasic load ratingsMassLimiting speedsInstallation dimersion
mmkNkgr/min(mm)
dDBr1、2minr3、4minEwCrCorGreaseOilda(min)Da(max)ra(max)
NB.NCF2930V1502103621.1195.5289505670140015920123.7
NB.NCF3030V225562.11.1211.7460710630130016121427.1
NB.NCF2932V1602203621.1205.7310535630130016921123.8
NB.NCF3032V240602.11.1225.1520810600120017122928.6
NB.NCF1834V170215221.51.1203.514927260012001822041.51.8
NB.NCF2934V2303621.1216320570600120017922124.1
NB.NCF3034V260672.11.1243.267510705601100181249211.9
NB.NCF1836V180225221.11215.21542906001200187.5217.511.8
NB.NCF2936V2504221.1232390695560110018924126
NB.NCF3036V280742.12.1260.578512605601100191269215.8
NB.NCF1838V190240241.51.122917833556011001982321.52.4
NB.NCF2938V2604221.1244435785560110019925126.5
NB.NCF3038V290752.12.127080513205301000201279216.7
NB.NCF1840V200250241.51.1237.519335656011002082421.52.5
NB.NCF2940V280482.11.5262530955530100021126928.9
NB.NCF3040V310822.12.1288.29101510500950211299221.4
NB.NCF3056V28042010644390.517403110493606703023953
NB.NCF1860V300380382.11.53634458709.73606703113692
NB.NCF2960V4207233385805173030.73406303203982.5
NB.NCF3060V460118444321980350067.63206003164443
NB.NCF1864V320400382.11.538346092510.33406303313892
NB.NCF2964V440723341111502340333206003334272.5
NB.NCF3064V48012144447.321703900733005603364643
NB.NCF1868V340420382.11.540147598510.73206003594022
NB.NCF2968V46072334311190247034.13005603534472.5
NB.NCF3068V5201335548624804350972805303605004
NB.NCF1872V360440382.11.5423.2562118011.53005603714292
NB.NCF2972V4807233451.512202610362805303734672.5
NB.NCF3072V54013455503.2255046001022605003805204
NB.NCF1876V380480462.11.5458575123018.62805303914692
NB.NCF2976V5208244486.714803210522605004044933
NB.NCF3076V56013555520.5261048001082404804005404
NB.NCF1880V400500462.11.5475590130019.52605004114892
NB.NCF2980V54082445111650355053.42404804165243
NB.NCF3080V60014855559.1294054501392204504205804
NB.NCF1884V420520462.11.5499600134020.52404804315092
NB.NCF2984V56082445241740359055.72204504365443
NB.NCF3084V62015055578.2300056501472004304406004
NB.NCF1888V440540462.11.5516615141021.32204504515292
NB.NCF2988V6009544565.52100416078.22004304565843
NB.NCF1892V4605805633553920195032.52004304735672.5
NB.NCF2992V62095445792130448081.21904004766043
NB.NCF1896V4806005633573.5940204033.81904004935872.5
NB.NCF2996V650100556062380510095.11803805006304
NB.NCF18/500V500620563359410302200351803805136072.5
NB.NCF29/500V67010055634.52420525098.41703605206504
NB.NCF18/530V5306505633624.5990224036.91703605436372.5
NB.NCF29/530V71010655673270060001201603405506904
NB.NCF18/560V56068056336551020236039.31603405736672.5
NB.NCF29/560V75011255709303067001401503205807304
NB.NCF18/600V60073060336961140268048.91503206137172.5
NB.NCF29/600V80011855754336075001701403006207804
NB.NCF18/630V63078069447391470340068.81403006467643
NB.NCF29/630V85012866807374086502051302806568245
NB.NCF18/670V67082069447831520355072.71302806868043
NB.NCF28/670V82088447832040534090.81302806868043
NB.NCF18/710V71087074448311670390079.71202607268543
NB.NCF29/710V95014066896391091502751102407369245
NB.NCF18/750V75092078558801890443094.61102407709004
NB.NCF287750V92010055880263067901301102407709004
NB.NCF18/800V8009808255936207049301131002208209604
NB.NCF29/800V10601506610024950122003609520083610345
NB.NCF18/850V85010308255986205052001359520087010104
NB.NCF29/850V11201556610615280129004059019088610845
NB.NCF18/900V900109085551044239059001399019092010704
NB.NCF29/900V11801656611205940146004728017093611545
NB.NCF18/950V950115090551103242063001858017097011304
NB.NCF29/950V12501757.57.511796660163005657516098312176
NB.NCF18/1000V100012201006611653110764020975160102611945
NB.NCF29/1000V13201857.57.5125274801860068070150103312876


SPECIFICATIONS-DOUBLE ROW
DesignationsBoundary dimensionsBasic load ratingsMassLimiting speedsInstallation dimersion
mmkNkgr/min(mm)
dDBr1、2minEwCrCorGreaseOilda(min)Da(max)ra(max)
NB.NNCF4930V1502106021923908656.667014001592012
NB.NNCF5030V2251002.120978514201363013001612142
NB.NNCF4932V160220602203.9410930763013001692112
NB.NNCF5032V2401092.1225895162015.860012001712292
NB.NNCF4934V170230602212.24159757.360012001792212
NB.NNCF5034V2601222.12431160214022.156011001812492
NB.NNCF4936V180250692231.1550123010.756011001892412
NB.NNCF5036V2801362.1260.51340251029.456011001912692
NB.NNCF4938V190260692241.3565129011.156011001992512
NB.NNCF5038V2901362.12701380263030.853011002012792
NB.NNCF4840V200250501.5235.93208255.956011002082421.5
NB.NNCF4940V280802.1260665150015.753010002112692
NB.NNCF5040V3101502.12881560300039.75009502112992
NB.NNCF4844V220270501.5256.93409056.453010002282621.5
NB.NNCF4944V300802.1277.26951620175009502312892
NB.NNCF5044V3401603308.51570308050.74508502333272.5
NB.NNCF4848V240300602282.4495134010.34809002492912
NB.NNCF4948V320802.1300.1725177018.44508502513092
NB.NNCF5048V3601603335.61990400054.34308002533472.5
NB.NNCF4852V260320602304.75151450114308002693112
NB.NNCF4952V3601002.1331.510502530324007502713492
NB.NNCF5052V4001904373.52690520082.73807002763843
NB.NNCF4856V280350692332.96851860164007502893412
NB.NNCF4956V3801002.1353.510902720343807002913692
NB.NNCF5056V42019043892770545087.73606702964043
NB.NNCF4860V300380802.1357.48052160233807003113692
NB.NNCF4960V4201183390.215803800523406303134072.5
NB.NNCF5060V4602184432340070001253206003164443
NB.NNCF4864V320400802.1380.3835231024.33406303313892
NB.NNCF4964V440118340916204000553206003334272.5
NB.NNCF5064V4802184447.5350073501313005603364643
NB.NNCF4868V340420802.1397.4855243025.63206003514092
NB.NNCF4968V4601183427.116904300583005603534472.5
NB.NNCF5068V5202435486425087501772805303605004
NB.NNCF4872V360440802.1420.28852580273005603714292
NB.NNCF4972V480118344617304500613005603734672.5
NB.NNCF5072V5402435503.6419088501862605003805204
NB.NNCF4876V3804801002.14561260360045.52805303914692
NB.NNCF4976V5201404481.52180565090.52605003965043
NB.NNCF5076V5602435521.4428092101942404804005384
NB.NNCF4880V4005001002.1470.31290375047.52605004114892
NB.NNCF4980V54014045022240590094.52404804165243
NB.NNCF5080V60027255605050109002562204504205804
NB.NNCF4884V4205201002.1492.61320395049.52404804315092
NB.NNCF4984V5601404522.52290620098.52204504365443
NB.NNCF5084V6202725577.75150113002672004304415984
NB.NNCF4888V4405401002.1514.61350415051.52204504515295
NB.NNCF4988V6001604563.5300078501362004304565843
NB.NNCF4892V4605801183543.31730515077.52004304735672.5
NB.NNCF4992V6201604577305080501421904004766043
NB.NNCF4896V4806001183567.31760530080.51904004935872.5
NB.NNCF4996V6501705605.5335089001671803805006304
NB.NNCF48/500V5006201183583.51810560083.51904005136072.5
NB.NNCF49/500V6701705631.5340093501731703605206504


Description

Design Principles: The cage-free full complement design maximizes the number of rollers and the contact area with raceways, evenly distributing radial loads to all rollers. The load-bearing density is 30%-50% higher than that of cylindrical roller bearings with cages, adapting to extreme radial heavy-load scenarios. The integral inner and outer ring structure enhances rigidity, reduces cumulative assembly errors, and has outstanding deformation resistance; some models have separable inner rings, facilitating installation and disassembly, and adapting to complex assembly processes. Performance Features: Core Ultra-High Radial Load Capacity: Full complement rollers + line contact design, maximum radial load up to 4000 KN, 30%-50% higher than bearings with cages of the same size, adapting to the needs of ultra-heavy equipment. Compact Structure: Cage-free design reduces axial space occupation, with stronger load-bearing capacity under the same size, adapting to heavy-load equipment with limited space. Strong Shock Resistance: Full complement distribution of rollers can buffer high-frequency impact loads, adapting to high-impact working conditions such as mining and metallurgy, with outstanding operational stability. Long Service Life & Stability: Surface hardening treatment of GCr15 material, precision polishing of roller end faces (Ra≤0.08μm), fatigue life increased by 20% compared with conventional bearings with cages. Customization Options: Supports non-standard size (inner diameter, outer diameter, width) customization, corrosion-resistant material (SUS440C) customization, separable inner ring structure customization.
Full Complement Cylindrical Roller Bearing

Features

Ultra-High Radial Load Capacity

Full complement roller design, load-bearing capacity 30%-50% higher than bearings with cages, leading in the industry, adapting to extreme radial heavy loads.

Compact and Efficient Structure

Cage-free design saves space, with stronger load-bearing capacity under the same size, adapting to heavy-load equipment with limited space.

Good Shock Resistance & Stability

Full complement distribution of rollers buffers impact loads, with operational failure rate much lower than conventional bearings.

High-performance, cost-effective import substitute

Technical specifications fully match those of imported products, ensuring stable supply and reducing procurement costs by 20%-30%.

Wide Application Adaptability

Compatible with complex heavy-load environments such as dusty, humid, and high-temperature conditions, supports non-standard customization, covering heavy-load needs in multiple industries.

Working Principle

Full Complement Cylindrical Roller Bearing
Working Principle:Roller Arrangement and Load Distribution: The cylindrical rollers are arranged in a full complement, parallel distribution along the raceway, without a cage, forming a full line contact structure. This evenly distributes the radial load to all rollers, avoiding localized stress concentration. Under extremely heavy loads, the full complement of rollers bears the load simultaneously, dispersing the load density and improving load-bearing efficiency and impact resistance. During medium and low-speed operation, optimized roller arrangement and grease lubrication reduce frictional interference between rollers, ensuring operational stability. Installation Adaptability: The integral structure is adapted to the interference fit requirements of the shaft and bore (shaft h7/bore H8), compatible with the assembly tolerance requirements of most industrial equipment; some models have a separable inner ring, supporting separate installation of inner and outer rings, simplifying the assembly process of complex equipment; the wide range of sizes meets the radial load-bearing needs of different heavy-duty equipment.

Application & Case

Applications of Full Complement Cylindrical Roller Bearings

1. Heavy Industrial Gearboxes

Large industrial gear reducers

Wind turbine gearboxes (planetary stages)

Marine gear systems

They support very high radial loads from gear meshing forces.

2. Steel & Metallurgical Equipment

Rolling mills

Continuous casting machines

Straightening machines

Designed to withstand heavy loads, shock, and vibration.

3. Mining & Quarry Equipment

Crushers

Grinding mills

Vibrating feeders

Operate reliably under extreme radial loads and harsh environments.

4. Construction Machinery

Excavators

Loaders

Track rollers

Suitable for low-speed, high-load applications.

5. Paper & Pulp Machinery

Paper machine rolls

Press sections

High load capacity and stability are essential for continuous operation.

6. Wind Energy Equipment

Main shafts

Gearbox planetary systems

Handle large radial loads with compact bearing design.

7. Machine Tools (Heavy Duty)

Rotary tables

Indexing heads

Provide high rigidity for heavy cutting forces.

8. Power Generation Equipment

Hydropower turbines

Auxiliary rotating machinery

Support heavy shafts under continuous load.

9. Industrial Presses & Extruders

Screw presses

Extrusion machines

Designed to carry large radial loads at low speeds.

10. General Heavy Machinery

Conveyors

Large fans and blowers

Material handling equipment

Used where high load capacity is more important than high speed.

FAQ

The full complement type is cage-free with full complement rollers, radial load-bearing capacity increased by 30%-50%, adapting to extreme heavy loads but with lower speed (≤2000 rpm); the caged type has higher speed but weaker load-bearing capacity, suitable for medium-high speed conventional heavy-load scenarios. The selection depends on load level and speed requirements.
They are only designed to withstand radial loads and have no axial load-bearing capacity. If both radial and axial loads need to be borne, they should be used in combination with thrust bearings.
Usually 4-10 weeks. Specifically, it needs to be determined according to size complexity, structure optimization requirements, material supply and production schedule. Urgent production services for heavy-load or emergency projects are supported.
For high-temperature environments, GCr15 material + high-temperature special grease (adapted to ≤150°C) should be selected, combined with open or non-contact seals; for corrosive environments, SUS440C stainless steel material + corrosion-resistant grease should be selected to ensure service life and stability.

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