Precision Bearings Precision Engineered. Globally Supplied.
P0-P4 precision grades. Z2-Z4 noise grades. Chrome steel construction. Serving global distributors, machinery manufacturers, and OEM brand owners with factory-direct pricing and 1-piece MOQ.
19+
Years Factory
P0-P4
Precision Grade
ISO 9001
Certified
1 pc MOQ
No Min Order
By Precision Grade
P0 · P4 · P5 · P6All Products
4835 products found
Double Row Cylindrical Roller Bearing Nu2308 Ec Ml/C3 for General Mechanical Applications
Ensure smooth, high-precision rotation in your machinery with the Double Row Cylindrical Roller Bearing Nu2308 Ec Ml/C3, engineered to deliver reliable performance even under heavy radial loads. Crafted from premium bearing steel with 60-64 HRC hardness, this bearing minimizes vibration (Z1V1-Z3V3 grades) and ensures long service life, addressing the need for durable, low-maintenance components in general mechanical applications.Separated design allows easy installation and maintenance, saving valuable downtime during repairsC3 clearance provides optimal thermal expansion space, critical for machinery operating in varying temperature environmentsAvailable with brass or steel cages to suit specific load and speed requirements, backed by Saifan’s strict ISO 9001 quality control
Heavy Load Double Row Cylindrical Roller Bearing Nu324 Ec M for Industrial Machinery
Keep your industrial machinery running smoothly under heavy loads with our Heavy Load Cylindrical Roller Bearing—engineered to minimize downtime and maximize productivity. This Nu324 EC M model features a double row design that delivers exceptional radial load capacity, making it ideal for high-stress applications like machine tools and reducers.Precision-crafted from high-grade bearing steel with 60-64 HRC hardness, ensuring long service life even in demanding conditionsSeparated structure allows easy installation and maintenance, reducing operational hasslesAvailable clearance options (C0-C5) and brass/steel cages for tailored performance to your specific machinery needs
Heavy Load Double Row Cylindrical Roller Bearing NNU4930 B/SP C3 W33 for Mining Industry
Ensure uninterrupted mining operations with the Heavy Load Cylindrical Roller Bearing, engineered to deliver exceptional durability under extreme conditions. This Double Row NNU4930 B/SP C3 W33 bearing minimizes downtime by handling heavy radial loads and axial forces, making it ideal for mining machinery subjected to constant stress.Precision-manufactured with C3 clearance and 60-64 HRC hardness for optimal performance in high-torque applicationsSeparated design allows easy maintenance, reducing overhaul time and keeping your equipment running longerConstructed from premium bearing steel with brass or steel cages, ensuring reliable rotation even in harsh mining environments
Double Row Cylindrical Roller Bearing Nu2312-Ec for Mining Metallurgy Equipment with C3 Clearance
Ensure smooth, heavy-duty performance for your mining and metallurgy equipment with our Double Row Cylindrical Roller Bearing Nu2312-Ec featuring C3 clearance. Engineered to handle extreme loads and high-speed rotation, this bearing minimizes downtime and reduces maintenance costs in harsh industrial environments. Precision-crafted with high-grade bearing steel (60-64 HRC hardness) for exceptional durability and wear resistance Separated design allows easy installation and maintenance, saving valuable time during equipment overhauls Optimized C3 clearance ensures thermal expansion compensation, critical for continuous operation under varying temperatures Available with brass or steel cages to match specific application demands, backed by our strict quality control and 12-month warranty
Double Row Cylindrical Roller Bearing NNU4938 NNU4940 for Industrial Machinery with Brass Cage
Ensure smooth, high-precision operation for your industrial machinery with our Double Row Cylindrical Roller Bearing NNU4938 and NNU4940, engineered to deliver reliable performance under heavy loads. The brass cage design reduces friction and heat buildup, extending service life while maintaining consistent rotation—ideal for machine tools, reducers, and high-torque equipment.Medium to large outer dimensions (120-190mm) with C0-C5 clearance options for precise fit in industrial applications60-64 HRC hardness and Z1V1-Z3V3 vibration grades ensure stability even in continuous operationSeparated structure allows easy maintenance, minimizing downtime for your production line
Large Size Double Row Cylindrical Roller Bearing for Heavy Equipment with C3 Clearance
Ensure smooth, heavy-duty machinery operation with our Large Size Double Row Cylindrical Roller Bearing—engineered to handle extreme loads and reduce downtime in harsh working conditions. The C3 clearance design minimizes friction under thermal expansion, making it ideal for construction, mining, and agricultural equipment that demands reliable performance under variable temperatures.Precision-crafted from high-grade bearing steel (60-64 HRC hardness) for extended service life and resistance to wearSeparated inner/outer rings allow easy mounting and maintenance, saving valuable time during equipment overhaulsAvailable with brass or steel cages to match specific load requirements, ensuring compatibility with your machinery’s unique needs
Double Row Cylindrical Roller Bearing RNU2212/2304/310 EC P for Industrial Machinery with Brass Cage
Ensure smooth, high-precision rotation for your industrial machinery with our Double Row Cylindrical Roller Bearing RNU2212/2304/310 EC P, designed to minimize downtime and boost operational efficiency. Crafted with a durable brass cage and high-grade bearing steel (60-64 HRC hardness), this bearing delivers exceptional load capacity and wear resistance, addressing the need for reliable performance in heavy-duty applications.Precision-engineered with separable inner/outer rings for easy installation and maintenance, a critical feature for industrial machinery upkeepAvailable in clearance grades C0-C5 and vibration levels Z1V1-Z3V3 to match specific operational demands, ensuring optimal compatibility with your equipmentBacked by our strict quality control and 12-month warranty, providing peace of mind for long-term use in machine tools, reducers, and other industrial systems
Miniature Double Row Cylindrical Roller Bearing RNU212 Ec J for Industrial Machinery
Ensure smooth, precise rotation for your industrial machinery with the Miniature Double Row Cylindrical Roller Bearing RNU212 Ec J. Engineered to deliver consistent performance under demanding conditions, this bearing minimizes downtime and enhances equipment reliability—perfect for manufacturers seeking stable, long-lasting components. Crafted from high-grade bearing steel with 60-64 HRC hardness, ensuring exceptional wear resistance and extended service life in heavy-duty applications Features separated design and clearance options (C0/C2/C3/C4/C5) for easy installation and precise alignment, critical for maintaining operational accuracy Supports axial loads efficiently while reducing vibration (Z1V1-Z3V3 grades), ideal for precision machinery where smooth operation is non-negotiable
Double Row Cylindrical Roller Bearing NU320 NU322 NU324 EC M/J C3/C4 for Industrial Machinery
Ensure smooth, high-precision operation for your industrial machinery with our Double Row Cylindrical Roller Bearing NU320/NU322/NU324 EC M/J series. Engineered to handle heavy radial loads while maintaining stability across C3/C4 clearance options, these bearings reduce downtime and extend equipment lifespan in demanding manufacturing environments.Separated design with brass/steel cages enables easy installation and maintenance, ideal for machine tools and reducers requiring quick part replacement60-64 HRC hardness and Z2V2 vibration grade ensure consistent performance under variable speeds, addressing the need for reliable rotation in critical industrial processesAvailable in medium-large outer dimensions (120-190mm) to fit standard industrial machinery specifications, backed by Saifan's ISO 9001-certified quality control for peace of mind
Double Row Cylindrical Roller Bearing Nu2222 Ec J/C3 for Low Speed Stable Rotation
Ensure smooth, low-speed rotation with the Double Row Cylindrical Roller Bearing NU2222 EC J/C3, engineered to deliver stable performance in industrial machinery. Its C3 clearance design minimizes vibration under heavy loads, while the brass cage construction ensures long-term durability—perfect for equipment where consistent operation directly impacts productivity.Medium and large outer dimensions (120-190mm) support robust load handling in agricultural, construction, and industrial applications60-64 HRC hardness rating guarantees resistance to wear, reducing maintenance needs and downtimeNon-aligning design with separated inner/outer rings allows for easy installation and replacement, streamlining your workflow
Double Row Cylindrical Roller Bearing NNU4920 B/Sp C3 W33 for Industrial Machinery
Ensure smooth, high-precision rotation for your industrial machinery with our Double Row Cylindrical Roller Bearing NNU4920 B/Sp C3 W33. Crafted from premium bearing steel with 60-64 HRC hardness, this heavy-duty solution minimizes downtime by delivering exceptional load capacity and wear resistance—ideal for demanding industrial applications.Separated design with brass or steel cage allows easy installation and maintenance, reducing assembly timeC3 clearance and Z2V2 vibration grade ensure stable performance under varying speeds, addressing common precision concerns in high-torque machineryMedium-large outer dimension (120-190mm) fits seamlessly into industrial equipment, backed by our ISO 9001-certified quality control for reliable, long-term operation
Double Row Cylindrical Roller Bearing Nu219-Ec P for Traditional Machine with C3 Clearance
Ensure smooth, reliable rotation in traditional machinery with the Double Row Cylindrical Roller Bearing Nu219-Ec P—engineered to minimize downtime and maximize operational stability. Its C3 clearance design balances thermal expansion and load distribution, making it ideal for high-torque applications where precision and durability are non-negotiable.Non-aligning structure maintains consistent performance under radial loads, reducing wear on connected componentsCrafted from high-grade bearing steel with 60-64 HRC hardness for extended service life in heavy-duty conditionsAvailable with brass or steel cages to suit specific machinery requirements, ensuring perfect compatibility with your equipment
Precision Craftsmanship.
Enduring Performance.
Autonomous factory manufacturing with full-process quality control. Every bearing is engineered to exceed international standards for load capacity, noise grade, and service life.
Micro-Level Precision
Advanced CNC grinding to ABMA/DIN standards. Dimensional accuracy measured at micron level for consistent performance in high-speed applications.
Premium Raw Materials
High-grade GCr15 chrome steel with strict incoming inspection. Superior hardness and wear resistance ensures 3× longer service life than standard bearings.
Certified Quality System
ISO 9001:2015 & ISO 14001 certified facility. Professional QC teams conduct 100% dimensional, noise, and vibration testing before shipment.
Full Custom Production
From R&D to branded packaging. Support custom dimensions, seals, lubrication, and private labeling. 1 pc MOQ for standard, bulk orders in 5-15 days.
±0.001mm
Dimensional Tolerance
≤55 dB
Noise Level (Z4)
180°C
Max Operating Temp
50,000h
Design Service Life
Engineered for Every Industry
From renewable energy to heavy metallurgy -- our bearings are trusted across the most demanding industrial environments worldwide.
Renewable Energy
Wind & solar power systems
Mineral Processing
Mining & crushing equipment
Marine & Offshore
Corrosion-resistant solutions
Steel & Metallurgy
High-temp heavy-load bearings
Wind Energy
Turbine main shaft bearings
Pulp & Paper
Wet environment performance
Medical & Lab
Ultra-low noise precision
Heavy Machinery
Maximum load capacity
Request Free Sample
Test before you commit. We provide free bearing samples (buyer pays freight). Ready in 3-5 business days. No minimum order required.
- Free sample (freight collect)
- 3-5 day dispatch
- Full spec datasheet included
- No MOQ for samples
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For distributors, brand owners, and machinery manufacturers. Share your requirements and receive a competitive factory-direct quotation within 24 hours.
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Full FCL Support
20GP / 40HQ containers
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OEM Branding
Custom packaging & labels
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5-15 Day Lead
Bulk production timeline
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