Tapered Roller Bearings

32320 7620E 32320R Chrome Steel 100*215*77mm Single Row Cone and Cup Tapered Roller Bearings The 32320, 7620E, and 32320R tapered roller bearings are crafted from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for space-constrained medium-to-heavy-duty scenarios with a compact footprint (100mm ID, 215mm OD, 77mm width), this material delivers exceptional wear resistance, impact tolerance, and

32319 7619E 32319R Chrome Steel 95*200*71mm Single Row Cone and Cup Tapered Roller Bearings The 32319, 7619E, and 32319R tapered roller bearings are manufactured from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to reach a hardness of HRC 58-62. Designed for space-constrained medium-to-heavy-duty scenarios with a compact footprint (95mm ID, 200mm OD, 71mm width), this material delivers outstanding wear resistance, impact tolerance, and

32318 7618E 32318R Chrome Steel 90*190*67mm Single Row Cone and Cup Tapered Roller Bearings Equipped with brand-specific reinforced cages and precision-machined rollers: 32318/7618E: Stamped steel cage (70% thicker than standard bearings) with rounded pockets to reduce stress and prevent deformation under vibrations or load spikes (e.g., uneven material feeding in conveyors). 32318R: KOYO-specific high-strength lightweight steel cage—minimizes centrifugal drag while retaining

32317 7617E 32317R Chrome Steel 85*180*63mm Single Row Cone and Cup Tapered Roller Bearings The 32317, 7617E, and 32317R tapered roller bearings are manufactured from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to reach a hardness of HRC 58-62. Designed for space-constrained medium-to-heavy-duty scenarios with a compact footprint (85mm ID, 180mm OD, 63mm width), this material delivers outstanding wear resistance, impact tolerance, and

32944 2007944E 32944R Chrome Steel 220*300*51mm Single Row Cone and Cup Tapered Roller Bearings Ultra-heavy mining trucks (500+ ton payload capacity) operate under unrivaled stress, with rear axles bearing the combined weight of the vehicle, massive ore loads, and dynamic forces from rugged mining terrain. The 32944 series’ 220×300×51mm dimensions and tapered design make it a critical component here—its broad contact surfaces distribute radial loads (from the truck’s colossal

32940 2007940E 32940R Chrome Steel 200*280*51mm Single Row Cone and Cup Tapered Roller Bearings Large tunnel boring machines (TBMs) use cutter head shafts to drive massive cutting discs through rock and soil, with these shafts facing radial loads from cutter pressure and axial thrust from TBM forward movement. The 32940 series’ chrome steel material resists abrasion from rock fragments and corrosion from groundwater, while its tapered design manages dual loads efficiently.

32938 2007938E 32938R Chrome Steel 190*260*45mm Single Row Cone and Cup Tapered Roller Bearings Ultra-heavy mining trucks (400+ ton payload capacity) operate under unprecedented stress, with drive axles bearing the combined weight of the vehicle, massive ore loads, and dynamic forces from rugged mining terrain. The 32938 series’ 190×260×45mm dimensions and tapered design make it a critical component here—its broad contact surfaces distribute radial loads (from the truck’s

32932 2007932E 32932R Chrome Steel 160*220*38mm Single Row Cone and Cup Tapered Roller Bearings Hot rolling mills in steel plants process thick steel slabs (up to 100mm) at temperatures exceeding 1,000°C, subjecting gearbox shafts to extreme torque, radial loads from rolling rolls, and axial thrust from metal deformation. The 32932 series’ chrome steel construction (HRC 61–65 hardness) resists wear from hot metal particles and high-temperature oxidation, while its tapered

32930 2007930E 32930R Chrome Steel 150*210*38mm Single Row Cone and Cup Tapered Roller Bearings Offshore oil rig cranes (lifting capacities over 100 tons) operate in harsh saltwater environments, with winch gearboxes facing corrosion, high humidity, and variable loads from wave motion. The 32930 series, when paired with marine-grade anti-corrosion coatings (e.g., zinc-nickel plating), resists saltwater corrosion—preventing seizure during critical lifting operations. Its

32928 2007928E 32928R Chrome Steel 140*190*32mm Single Row Cone and Cup Tapered Roller Bearings Ultra-class mining trucks (with payload capacities exceeding 200 tons) operate under unparalleled stress, carrying massive ore loads over rugged terrain while enduring constant vibration and abrupt weight shifts. The 32928 series’ 140×190×32mm dimensions make it a perfect fit for their drive axles, where its tapered design distributes colossal radial loads (from the truck and cargo

32926 2007926E 32926R Chrome Steel 130*180*32mm Single Row Cone and Cup Tapered Roller Bearings Heavy forging presses (used to shape large metal components for aerospace or energy industries) exert forces up to 20,000 tons, demanding bearings that maintain rigidity to avoid spindle deflection. The 32926R’s reversed cone design enables back-to-back mounting, which increases radial rigidity by 40% compared to single-bearing setups. This configuration keeps the spindle stable

32924 2007924E 32924R Chrome Steel 120*165*29mm Single Row Cone and Cup Tapered Roller Bearings Class 8 heavy-duty trucks (semi-trailers, long-haul freight carriers) handle payloads up to 80,000 lbs and endure millions of miles of highway and off-road use, placing extreme stress on rear axles. The 32924 series’ 120×165×29mm dimensions fit perfectly into these axles, with its tapered design distributing radial loads (from the truck and cargo weight) and axial loads (from

32922 2007922E 32922R Chrome Steel 110*150*25mm Single Row Cone and Cup Tapered Roller Bearings Large industrial lathes (used for machining heavy metal parts like engine crankshafts or turbine components) require bearings that balance rigidity with minimal runout—even tiny deflection can ruin high-precision parts. The 32922R’s reversed cone design enables face-to-face mounting, which boosts axial rigidity by 30% compared to single-bearing setups. This configuration minimizes

32921 2007921E 32921R Chrome Steel 105*145*25mm Single Row Cone and Cup Tapered Roller Bearings Semi-trailer and utility trailer wheel hubs are tasked with supporting extraordinary payloads—often ranging from 10 to 20 tons per axle for semi-trailers and 3 to 8 tons for utility trailers—and enduring relentless road vibration, whether traversing highway asphalt, gravel construction sites, or uneven rural roads. This dual challenge demands a bearing that can balance heavy-load

32920 2007920E 32920R Chrome Steel 100*140*25mm Single Row Cone and Cup Tapered Roller Bearings The 32920 series’ 100×140×25mm dimensions make it ideal for heavy-duty truck front and rear axles, where it withstands combined radial loads (from vehicle weight) and axial loads (from cornering forces). The 2007920E variant, with its enhanced load capacity, excels in this role—tests show it handles 15–20% higher continuous loads than standard tapered bearings, reducing axle

32919 2007919E 32919R Chrome Steel 95*130*23mm Single Row Cone and Cup Tapered Roller Bearings 32919/2007919E: Basic dynamic load rating (Cr)=135kN; basic static load rating (Cor)=185kN; fatigue load limit (Pu)=20.8kN. It can support up to 15 tons (≈3.0 small SUVs), suitable for 17-32kW motor drivetrains, small gearbox shafts, or compact high-pressure pump rotors. 2007919E (Legacy Equivalent): Matches 32919’s load specs exactly, serving as a drop-in replacement for vintage

32918 2007918E 32918R Chrome Steel 90*125*23mm Single Row Cone and Cup Tapered Roller Bearings 90mm Inner Diameter (ID): Fits compact industrial shafts (tolerance: 0/-0.029mm) and accommodates a minimum 2.0mm shaft chamfer. The tight tolerance ensures a secure H7/k6 interference fit with 16-30kW motor shafts, precision spindle shafts, or small gearbox drive rollers—preventing slippage even under torque surges (e.g., CNC lathe cutting alloy steel, small mixer handling high

32917 2007917E 32917R Chrome Steel 85*120*23mm Single Row Cone and Cup Tapered Roller Bearings Most 32917 series bearings come pre-lubricated with high-performance grease tailored for compact applications, eliminating on-site lubrication errors (a leading cause of 45% of compact bearing failures): 32917/2007917E: Pre-filled with industrial-grade compact-machine grease (anti-oxidation, anti-rust additives), ensuring smooth operation from startup—no on-site lubrication needed,

32916 2007916E 32916R Chrome Steel 80*110*20mm Single Row Cone and Cup Tapered Roller Bearings Built to ISO 355/DIN 720 standards with P6-level precision (minimal vibration and misalignment), the dimensions are optimized for ultra-compact heavy-duty setups: 80mm Inner Diameter (ID): Fits compact industrial shafts (tolerance: 0/-0.027mm) and accommodates a minimum 3.5mm shaft chamfer. The tight tolerance ensures a secure H7/k6 interference fit with 14-26kW motor shafts,

32915 2007915E 32915R Chrome Steel 75*105*20mm Single Row Cone and Cup Tapered Roller Bearings Smooth roller-raceway contact reduces rotational friction by 67-75% vs. standard compact bearings: Energy Efficiency: Cuts 13-24kW motor power use by 11-14% (saves 1,100-1,400 kWh/year), meeting IE3/IE4 energy standards critical for precision machinery. Temperature Control: Maintains -30°C to 120°C (≤158°C under full load), preventing degradation of compact seals (e.g., small pump