Tapered Roller Bearings

32208 7508E 32208JR Chrome Steel 40*80*24.75mm Single Row Cone and Cup Tapered Roller Bearings Engineered to strict international standards (ISO 355, DIN 720) with P6-level precision, these single row cone-and-cup bearings align flawlessly with compact shaft and housing dimensions: 40mm ID (tolerance: -0.016/0.000mm): Fits small to medium shafts in 3-7kW electric motors, heavy-duty power tool spindles (e.g., industrial drills, large grinders), and light-duty automotive

32206 7506E 32206JR Chrome Steel 30*62*21.25mm Single Row Cone and Cup Tapered Roller Bearings The smooth contact between tapered rollers and raceways reduces rotational friction by 27-35% compared to standard small bearings, cutting power consumption for 2-5kW motors and medium-duty power tools. This low-friction design keeps operating temperatures within -30°C to 120°C (typically ≤ 90°C under full load), preventing overheating that degrades small seals (e.g., nitrile rubber

32205 7505E 32205JR Chrome Steel 25*52*19.25mm Single Row Cone and Cup Tapered Roller Bearings The 32205, 7505E, and 32205JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for compact heavy-duty scenarios with a space-saving footprint (25mm ID, 52mm OD, 19.25mm width), this material delivers exceptional wear resistance, impact tolerance, and basic

32204 7504E 32204JR Chrome Steel 20*47*19.25mm Single Row Cone and Cup Tapered Roller Bearings The 32204, 7504E, and 32204JR tapered roller bearings are crafted from high-grade chrome steel (GCr15/SAE 52100), heat-treated to HRC 58-62 for exceptional wear resistance and impact tolerance. Designed for compact heavy-duty scenarios (20mm ID, 47mm OD, 19.25mm width), this material outperforms low-carbon steel by 120-130% in service life—resisting premature wear in dusty power

30334 7334E 30334JR Chrome Steel 170*360*80mm Single Row Cone and Cup Tapered Roller Bearings The 30334, 7334E, and 30334JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for ultra-heavy-duty scenarios with a robust large footprint (170mm ID, 360mm OD, 80mm width), this material delivers exceptional wear resistance, impact tolerance, and basic corrosion

30332 7332E 30332JR Chrome Steel 160*340*75mm Single Row Cone and Cup Tapered Roller Bearings The smooth contact between tapered rollers and raceways reduces rotational friction by 37-45% compared to standard bearings, cutting power consumption for large motors and heavy tools (e.g., 180kW air compressors). This low-friction design keeps operating temperatures within -30°C to 120°C (typically ≤ 125°C during full load), preventing overheating that degrades high-performance

30330 7330E 30330JR Chrome Steel 150*320*72mm Single Row Cone and Cup Tapered Roller Bearings The 30330, 7330E, and 30330JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for ultra-heavy-duty scenarios with a robust large footprint (150mm ID, 320mm OD, 72mm width), this material delivers exceptional wear resistance, impact tolerance, and basic corrosion

30328 7328E 30328JR Chrome Steel 140*300*67mm Single Row Cone and Cup Tapered Roller Bearings Engineered to strict international standards (ISO 355, DIN 720) with P6-level precision, these single row cone-and-cup bearings align with standard large-size shaft and housing dimensions. The 140mm inner diameter (tolerance: -0.045/0.000mm) fits common shafts in industrial compressors (150-170kW), large power tools, and heavy-duty automotive drivetrain components, while the 300mm

30326 7326E 30326JR Chrome Steel 130*280*63mm Single Row Cone and Cup Tapered Roller Bearings The 30326, 7326E, and 30326JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for ultra-heavy-duty scenarios with a robust large footprint (130mm ID, 280mm OD, 63mm width), this material delivers exceptional wear resistance, impact tolerance, and basic corrosion

30324 7324E 30324JR Chrome Steel 120*260*59mm Single Row Cone and Cup Tapered Roller Bearings A core advantage of the 30324 series is its detachable inner cone (with rollers and cage) and outer cup—a hallmark of premium tapered roller bearings. This design simplifies installation in tight spaces: no specialized tools are needed to mount the 120mm shaft or secure the 260mm outer ring, allowing technicians to complete replacements in 63-73 minutes (vs. 135+ minutes for non

30322 73227E 30322JR Chrome Steel 110*240*54mm Single Row Cone and Cup Tapered Roller Bearings The 30322, 7322E, and 30322JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Designed for ultra-heavy-duty scenarios with a robust large footprint (110mm ID, 240mm OD, 54.5mm width), this material delivers exceptional wear resistance, impact tolerance, and basic corrosion

30321 7321E 30321JR Chrome Steel 105*225*53mm Single Row Cone and Cup Tapered Roller Bearings With a reference speed of 2,500 RPM (grease-lubricated) and limiting speed of 3,000 RPM (oil-lubricated), the 30321 series outperforms most ultra-heavy-duty tapered roller bearings of similar dimensions. Ultra-precision ground raceways (surface roughness Ra ≤ 0.2μm) and tapered rollers minimize centrifugal force-induced skidding, ensuring smooth operation at high speeds—perfect for

31305 27305E 31305R Chrome Steel 25*62*18mm Single Row Cone and Cup Tapered Roller Bearings Light Manufacturing: Mini CNC lathes, 4-8kW motor drivetrains, small conveyor rollers. Agriculture: Small tractor auxiliary shafts, mini irrigation pumps, small seeder drives. Construction: Portable drill shafts, lightweight conveyor parts, small concrete mixer components. Automotive: Small commercial vehicle auxiliary pulleys, mini utility vehicle axle components. Food Processing:

33220 3007220E 33220R Chrome Steel 100*180*63mm Single Row Cone and Cup Tapered Roller Bearings 100mm Inner Diameter (ID): Fits heavy industrial shafts (tolerance: 0/-0.032mm) and accommodates a minimum 5.5mm shaft chamfer. The tight tolerance ensures a secure H7/k6 interference fit with 60-70kW motor shafts, crusher drive rollers, or large machine tool spindles—preventing slippage even during torque surges (e.g., crusher handling granite, lathe cutting 100mm-thick steel

33219 3007219E 33219R Chrome Steel 95*170*58mm Single Row Cone and Cup Tapered Roller Bearings 33219/3007219E: 3.8mm thick stamped steel cage (290% thicker than standard) with rounded pockets—reduces roller stress by 48-53%, extending roller life by 53-58%. 33219R (KOYO-Specific): High-strength alloy steel cage (SCM445) with molybdenum disulfide coating—38% higher tensile strength than standard steel, cutting centrifugal drag by 23% at max speed. Both designs distribute loads

33218 3007218E 33218R Chrome Steel 90*160*55mm Single Row Cone and Cup Tapered Roller Bearings 90mm Inner Diameter (ID): Fits heavy industrial shafts (tolerance: 0/-0.029mm) and accommodates a minimum 5mm shaft chamfer. The tight ID tolerance ensures a secure interference fit (H7/k6) with 50-60kW motor shafts, crusher drive rollers, or large machine tool spindles—preventing slippage even under extreme torque (e.g., crushers handling granite, lathes cutting 80mm-thick steel

33217 3007217E 33217R Chrome Steel 85*150*49mm Single Row Cone and Cup Tapered Roller Bearings 33217/3007217E: 3.4mm thick stamped steel cage (270% thicker than standard) with rounded pockets—reduces roller stress by 42-47%, extending roller life by 47-52%. 33217R (KOYO-Specific): High-strength alloy steel cage (SCM445) with molybdenum disulfide coating—32% higher tensile strength than standard steel, cutting centrifugal drag by 21% at max speed. Both designs distribute loads

33216 3007216E 33216R Chrome Steel 80*140*46mm Single Row Cone and Cup Tapered Roller Bearings Optimized roller geometry and smooth raceways ensure high-speed stability without overheating: Grease Lubrication: Reference speed of 2,600-3,400 rpm (suitable for machine tool spindles, mining conveyor motors). Lithium-based NLGI Grade 2 grease (infused with extreme-pressure additives) keeps temperatures ≤162°C. Oil Lubrication: Limit speed of 3,400-4,600 rpm (ideal for high

33215 3007215E 33215R Chrome Steel 75*130*41mm Single Row Cone and Cup Tapered Roller Bearings Wear Resistance: Outperforms low-carbon steel bearings by 450-460% in dusty/abrasive settings (deep mining conveyors, 35-45kW motor gearboxes), resisting erosion from mining tailings, construction gravel, or metal shavings that shorten standard bearing life by 68-78%. Impact Toughness: Absorbs sudden load spikes—such as start-stop cycles of heavy drilling rigs, vibration from high

33214 3007214E 33214R Chrome Steel 70*125*41mm Single Row Cone and Cup Tapered Roller Bearings 33214/3007214E: Basic dynamic load rating (Cr)=200-247kN, static load rating (Cor)=285-314kN . Supports up to 24.7 tons (≈5 small SUVs), suitable for 30-40kW motor drivetrains, mining conveyor rollers, and cone crusher shafts . 3007214E (Legacy Equivalent): Matches 33214’s load specs exactly, serving as a drop-in replacement for vintage machinery (e.g., 1990s industrial presses,