Tapered Roller Bearings

30304 7304E 30304JR Chrome Steel 20*52*16mm Single Row Cone and Cup Tapered Roller Bearings With a reference speed of 12,000 RPM and a maximum limit of 14,000 RPM , the 30304 series outperforms most compact tapered roller bearings of similar size. Grease-lubricated variants reach up to 8,300 RPM, while oil-lubricated models hit 11,000 RPM —perfect for high-speed applications like mini fans or precision robotics joints. The tapered design distributes centrifugal force evenly,

30303 7303E 30303JR Chrome Steel 17*47*15mm Single Row Cone and Cup Tapered Roller Bearings The 30303, 7303E, and 30303JR tapered roller bearings are forged from high-grade chrome steel (SAE-52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62 . Despite their compact footprint (17mm ID, 47mm OD, 15mm width), this material delivers exceptional wear resistance, impact tolerance, and corrosion protection. Unlike standard low-carbon steel bearings,

30302 7302E 30302JR Chrome Steel 15*42*14mm Single Row Cone and Cup Tapered Roller Bearings The single row cone-and-cup design simplifies installation in compact spaces—no specialized tools are needed to align the 15mm shaft with the bearing’s inner ring or secure the 42mm outer ring into small housings. Technicians or even DIY users can complete replacement in 10-15 minutes (vs. 30+ minutes for complex multi-row bearings), reducing labor costs for small equipment repairs (e

30240 7240E 30240JR Chrome Steel 200*360*64mm Single Row Cone and Cup Tapered Roller Bearings Optimized for high-torque systems, the 30240 series can manage torques up to 6500 N·m—ideal for industrial gearboxes (mining crushers, steel mill drives), heavy-duty truck transmissions, and construction machinery drive shafts. The tapered roller design distributes torque evenly across contact surfaces, preventing localized stress that leads to premature wear in standard bearings.

30238 7238E 30238JR Chrome Steel 190*340*60mm Single Row Cone and Cup Tapered Roller Bearings The 30238, 7238E, and 30238JR tapered roller bearings are forged from high-grade chrome steel, which undergoes precision heat treatment to achieve a hardness of HRC 58-62—ensuring exceptional wear resistance, impact tolerance, and corrosion protection. This robust material allows the bearings to thrive in harsh environments, including high-temperature industrial workshops (up to 185

30236 7236E 30236JR Chrome Steel 180*320*57mm Single Row Cone and Cup Tapered Roller Bearings With a torque capacity optimized for high-load power systems, the 30236 series excels in applications like industrial gearboxes for crushers, heavy-duty truck transmissions, and construction machinery drive shafts. The tapered roller design distributes torque evenly across contact surfaces, avoiding localized stress that causes premature wear in standard bearings. This capability

30234 7234E 30234JR Chrome Steel 170*310*57mm Single Row Cone and Cup Tapered Roller Bearings Engineered in strict compliance with international standards (e.g., ISO 355, DIN 720), these single row cone-and-cup bearings feature exact dimensions: 170mm inner diameter (ID), 310mm outer diameter (OD), and 57mm width. Critical dimensions are controlled within a tolerance of ±0.005mm using advanced CNC machining and laser calibration technology, eliminating compatibility issues

30232 7232E 30232JR Chrome Steel 160*290*52mm Single Row Cone and Cup Tapered Roller Bearings Each bearing undergoes ultra-precision grinding of its raceways and rollers, achieving a surface roughness of Ra 0.15μm or lower—far exceeding the industry’s basic standard of Ra 0.4μm. This ultra-smooth finish minimizes rotational friction, reducing energy loss and cutting the equipment’s overall power consumption by 16-24% compared to standard bearings. Additionally, the low

30230 7230E 30230JR Chrome Steel 150*270*49mm Single Row Cone and Cup Tapered Roller Bearings The 30230, 7230E, and 30230JR tapered roller bearings are constructed from high-grade chrome steel, which undergoes precision heat treatment to reach a hardness of HRC 58-62. This material delivers exceptional wear resistance, strong impact tolerance, and reliable corrosion protection—enabling the bearings to perform stably in harsh operating environments, such as high-temperature

30228 7228E 30228JR Chrome Steel 140*250*45mm Single Row Cone and Cup Tapered Roller Bearings The 30228, 7228E, and 30228JR tapered roller bearings are crafted from high-grade chrome steel, which undergoes precision heat treatment to achieve a hardness of HRC 58-62. This material delivers exceptional wear resistance, strong impact tolerance, and reliable corrosion protection—enabling the bearings to perform stably in harsh operating environments, such as high-temperature

30226 7226E 30226JR Chrome Steel 130*230*43mm Single Row Cone and Cup Tapered Roller Bearings Engineered in strict compliance with international standards (e.g., ISO 355, DIN 720), these single row cone-and-cup bearings feature exact dimensions: 130mm inner diameter (ID), 230mm outer diameter (OD), and 43mm width. Critical dimensions are controlled within a tolerance of ±0.005mm using advanced CNC machining and laser calibration technology, eliminating compatibility issues

30224 7224E 30224JR Chrome Steel 120*215*43mm Single Row Cone and Cup Tapered Roller Bearings Engineered in strict compliance with international standards (e.g., ISO 355, DIN 720), these single row cone-and-cup bearings feature exact dimensions: 120mm inner diameter (ID), 215mm outer diameter (OD), and 43mm width. Critical dimensions are controlled within a tolerance of ±0.005mm using advanced CNC machining and laser inspection technology, eliminating compatibility issues

30222 7222E 30222JR Chrome Steel 110*200*41mm Single Row Cone and Cup Tapered Roller Bearings The 30222, 7222E, and 30222JR tapered roller bearings are constructed from premium chrome steel, which undergoes precision heat treatment to reach a hardness of HRC 58-62. This material delivers exceptional wear resistance, strong impact resistance, and reliable corrosion protection—allowing the bearings to perform stably in harsh operating environments, such as high-temperature

30221 721E 30221JR Chrome Steel 105*190*39mm Single Row Cone and Cup Tapered Roller Bearings Engineered in strict compliance with international standards (e.g., ISO 355, DIN 720), these single row cone-and-cup bearings feature exact dimensions: 105mm inner diameter (ID), 190mm outer diameter (OD), and 39mm width. Critical dimensions are controlled within a tolerance of ±0.005mm using advanced CNC machining and laser measurement technology, eliminating compatibility issues

30220 7220E 30220JR Chrome Steel 100*180*37mm Single Row Cone and Cup Tapered Roller Bearings The 30220, 7220E, and 30220JR tapered roller bearings are made from high-grade chrome steel, which achieves a hardness of HRC 58-62 after precision heat treatment. This material offers exceptional wear resistance and reliable corrosion protection, allowing the bearings to withstand harsh operating environments—such as high-temperature industrial workshops (up to 135°C), dusty mining

30219 7219E 30219JR Chrome Steel 95*170*34.5mm Single Row Cone and Cup Tapered Roller Bearings Each bearing undergoes precision grinding of its raceways and rollers, achieving a surface roughness of Ra 0.18μm or lower—surpassing the industry basic standard of Ra 0.4μm. This ultra-smooth finish minimizes friction during rotation, reducing energy loss and cutting the equipment’s overall power consumption by 9-16% compared to standard bearings. Additionally, the low-friction

395A/394A CBK336 214478 Chrome Steel 66.675*110*21.996mm Double Single Row Cone And Cup Tapered Roller Bearings CBK336 4T-395A/394A 4T-395A/394A in Marine and Coastal Environments​ Featuring thicker chrome plating than 29586A/29522, these bearings offer superior corrosion resistance, withstanding prolonged saltwater exposure in large boat trailers and commercial watercraft. The 66.675mm inner diameter fits thicker marine shafts, while the 110mm outer diameter pairs with

29586A/29522 Chrome Steel 63.5*107.95*25.4mm Double Single Row Cone And Cup Tapered Roller Bearings 29586A/29522 for Enhanced Heavy-Truck Performance​ Specifically engineered for heavy commercial vehicle axles with thicker shafts, these bearings withstand stress from long-haul and off-road driving better than 29587/29520. The 63.5107.9525.4mm dimensions fit standard heavy truck hub assemblies, with a reinforced inner ring enhancing stability in high-vibration scenarios—ideal

29587/29520 Chrome Steel 63.5*107.95*25.4mm Double Single Row Cone And Cup Tapered Roller Bearings 29587/29520 in Marine and Coastal Environments​ Featuring thicker chrome plating than 28985A/28920, these bearings offer superior corrosion resistance, withstanding prolonged saltwater exposure in large boat trailers and commercial watercraft. The 63.5mm inner diameter fits thicker marine shafts, while the 107.95mm outer diameter pairs with larger hub assemblies. A robust seal

28985A/28920 Chrome Steel 60.325*101.6*25.4mm Double Single Row Cone And Cup Tapered Roller Bearings 28985A/28920 in Marine and Coastal Environments​ Featuring thicker chrome plating than 28985/28920, these bearings offer superior corrosion resistance, withstanding prolonged saltwater exposure in large boat trailers and commercial watercraft. The 60.325mm inner diameter fits thicker marine shafts, while the 101.6mm outer diameter pairs with larger hub assemblies. A robust