ntn mining application mining crushing transfer processing spherical roller bearings features the material ntn developed for lh series spherical roller bearings has gained considerable acceptance in the market as a next step ntn will launch the new series with a symmetrical roller design with lh material as a standard for bearings with an od over 420mm both asymmetrical and symmetrical roller design are available application example high reliability the benefit of longer life reduced maintenance longer ser vice life the benefit of longer life longer life over 3.5 times higher capacity 1.4 times high temperature 250°c bearings for swing machinery compact design the benefit of higher capacity 3 spares inventry reduction special heat stabilization is not needed the benefit of higher temperature material
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ntn mining application mining crushing transfer processing cylindrical roller bearings e type features 1 longer life 1.5 times longer life than standard type 2 higher load rating than standard series via larger size rollers e type standard type type nu type nj fig.3 type variation type nup fig.1 comparison of internal design 180mm 100mm 215mm 120mm nu2220e cr=335kn e type bearing nu320 cr=299kn standard type bearing fig.2 nu224e cr=335kn e type bearing molded resin cage machined brass cage fig.4 cage type 5
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ntn mining application mining crushing transfer processing cylindrical roller bearings sl type cylindrical roller bearings sl01-type open type cylindrical roller bearings sl04-type for sheave sealed or shielded type features sl type cylindrical roller bearings are double row full complement cylindrical roller bearings and are suitable for heavy duty application because of the high basic load ratings floating and locating sl bearings are available and both non-separable locating sl bearings can support radial load and axial loads in both directions sl-04 type which have snap rings on od and seals or shields mainly used in rope sheave applications thus easy handling and simple design are obtainfd by using sl-04 type application example sl04-50nr type shaft g6 housing m7 or n7 ¡general purpose sheave on land ¡greasing is from the shaft sheave ¡general purpose sheave on land for better sealing performance oil seal ¡crane sheave on the sea ¡deck crane 6
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ntn mining application mining crushing transfer processing cat no 3024/e large size tapered roller bearings ea type a newly developed special heat treatment allows these bearings to ensure longer operating life under severe operating conditions features ea bearings have a particularly strong advantage by providing longer operating life due to their improved crack fatigue strength wear strength and peeling resistance characteristics especially when the lubricant is contaminated but also under clean lubricant conditions accordingly these bearings can be used in mining and ore processing applications where marginal lubrication vibrations and impact loads often exist the ea bearings provide advantages due to their compact design longer operating life and longer intervals between maintenance and inspections ea material treatment can be offered in tapered roller cylindrical roller and spherical roller bearings application example compound layer of carburized and nitrided materials carburize
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ntn mining application mining crushing transfer processing cat no 5301/e spherical plain bearings self-iubrication type lubrication type lubrication type thrust bushing features self-lubricating type spherical plain bearings self-lubricating spherical plain bearings are primarily intended for situations where a long life free from maintenance and lubrication requirements is desired they are also used for applications where lubrication is difficult lubrication type spherical plain bearings lubrication type spherical plain bearings feature sliding surfaces where both the inner and outer rings are steel fractured outer ring type and fitting groove type are available application example excavator 9 wheel loader articulate type
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ntn mining application mining crushing transfer processing cat no 3702/e sealed spherical roller bearings wa type sealed spherical roller bearing cross section of plummer block unit features the high load capacity of spherical roller bearings and their easy adaptability to a variety of applications has led to increased use in nearly every industry compact sealed spherical roller bearings have been developed by ntn specifically to address the need for longer operating life such as longer maintenance or relubrication application example direction of movement head pulley drive pulley tail pulley tension pulley exellent sealing performance against dusts and slurry can be installed in the standard series plummer blocks re-grease without removal of seals uniform sealing capability under misaligned operating conditions 10
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ntn mining application mining crushing transfer processing cat no 2500/e plummer blocks features tightening bolt the bolt protects the plummer block against loosening due to vibration and impact application example oil fill plug for relubrication seal excellent sealing performance spherical roller bearing self-aligning ball or spherical roller bearing is built into plummer block mounting bolt holes allow easy positioning and installation adapter simplifies installation of the bearing trunnion bearing of ball tube mill oil drain plug for draining old lubricant plummer block unit designed for greater mechanical strength and manufactured under strict quality control program to suit the intended application it can be made of either spheroidal graphite cast iron ductile cast iron or cast steel dowel ball the upper and lower housings can be assembled together at higher accuracy by ball-dowel system using steel ball also the upper cover can be installed or removed easily supporting roller of
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ntn mining application mining crushing transfer processing cat no 3905/e triple lip sealed bearings for bearing unit features triple lip seal balled setscrew for easy mounting of the bearing on the shaft tightens securely and does not loosen application example triple lip sealed bearing units are suitable for equipment used in locations subjected to splashing foul water and slurry and heavy dust contamination including mining conveyors mixers pumps and samplers fig.1 triple lip sealed bearing sealing device outer ring the rubber seal extends to the outer circumference the shielded plate for better sealing performance and prevents contamination of the bearing by dust or foul water sealed plate ball galvanized steel plate construction ensures improved corrosion resistance optimal design contributes to enhanced pressure resistance a pillow unit right and a square flange unit left are used in a conveyor unit operating in an environment with heavy airborne dust inner ring triple lip provide
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ntn mining application mining crushing transfer processing needle roller bearings pk series needle roller and cage assemblies super high-capacity needle roller and pressed cage assemblies pkj series needle roller and pressed cage assemblies features pk series needle roller and cage assemblies are widely used in construction machinery agricultural machinery and hydraulic equipment often numerous needle roller bearings are used in the planetary gear speedreduction mechanism for mining and construction machinery features in recent years customers have required for bearings that have ever-increasing capacity in response ntn created a super high-capacity needle roller and pressed cage assemblies as the hwtj type compared to the standard design the number of rollers is increased by 20 to 30 and basic load rating by 20 to 35 this bearing series satisfies the requirements of large basic load rating long life under severe operating conditions and high rigidity features pkj series needle rolle
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ntn mining application mining crushing transfer processing cat no 3030/e insulated bearings megaohmtm series insulated bearings for generator features bearings used in electrical equipment such as dc and ac variable speed motors generators etc can exhibit electrical pitting resulting from current leakage ntn s megaohmtm series of insulated bearings has been specifically designed to counteract electrical pitting these bearings are available in both ceramic and resin types suited to a variety of applications the megaohmtm series of insulated bearings offers the following unique advantages ¡exhibits insulation resistance of at least 100 m at 500 vdc ¡available in a wide range of variants with various insulating layer materials high voltage resistance and shock immunity that accommodate diverse user requirements ¡compatible with iso 492 din 620 and jis 1514 standards ¡available in bore diameters ranging from 50 to 160 mm application 15
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