Ujk Precision Ball Bearings Double Row Bearings Double Row Ball Bearing 5204 20X47X20mm - High Load Capacity Double Row Bearing

• Customization: Available
• Vibration: Zv1 Zv2 Zv3
• Hardness: HRC60--62
• Cage: Steel Nylon Brass
• Material: Chrome Steel Gcr15
• Service: OEM
• Grease: Sheel Great Wall
• Precision: P0 P6 P5
• Package: Industry or Single Box
• Transport Package: Industry or Single Box
• Specification: Standard
• Trademark: UJK
• Origin: China
• HS Code: 84821020
• Production Capacity: 100000

Product Description

  

Product Description

 

UJK Double-Row Angular Contact Ball Bearings: Precision & Rigidity for Demanding Applications

UJK Double-Row Angular Contact Ball Bearings deliver superior axial rigidity and bidirectional load capacity in a single, compact unit. Engineered to replace paired single-row bearings, they simplify installation while providing exceptional accuracy for high-performance applications requiring precise control over combined radial and axial loads, moments, and misalignment.

Key Advantages:

1. Bidirectional Axial Load Capacity
   Handles significant axial loads in both directions without additional mounting configurations.

2. High Rigidity & Moment Resistance
   Double-row design resists tilting moments and shaft deflection, critical for spindle accuracy.

3. Space Optimization
   Compact axial space vs. two single-row bearings (±30% reduction).

4. Simplified Installation
   Pre-adjusted internal clearance/preload - no complex pairing required.

5. Precision Performance
   ABEC P5/P4 tolerance options ensure low vibration and high running accuracy.

6. High-Speed Capability
   Optimized cage designs (polyamide, brass) enable stable operation at elevated RPMs.

Design Types:

• O-Type (Back-to-Back): Maximizes moment rigidity (best for gearboxes, pumps).

• X-Type (Face-to-Face): Accommodates higher misalignment (ideal for flexible shafts).

• Tandem (DT): Extreme unidirectional axial load capacity (e.g., vertical spindles).

 

UJK Double-Row Angular Contact Ball Bearing Series & Specifications

(Standard Metric Series | Contact Angle: 25° or 40°)

Series	Bore (d)	OD (D)	Width (B)	Dynamic Load (C)	Static Load (C)	Contact Angle	Precision Grade	Config.
3200	10-150 mm	30-210 mm	14-40 mm	12-220 kN	6.5-235 kN	25°	ABEC P5 / P4	O / X
3300	15-200 mm	35-310 mm	17-52 mm	25-430 kN	15-460 kN	40°	ABEC P5 / P4	O / X
5200	15-120 mm	35-180 mm	12-28 mm	10-150 kN	5.5-160 kN	25°	ABEC P5	O / X	(Thin-Section)
5300	20-100 mm	40-150 mm	15-30 mm	18-95 kN	9.5-105 kN	25°	ABEC P5	Tandem (DT)

 

Critical Applications:

• Machine Tool Spindles (CNC lathes, grinders, milling centers)

• High-Precision Gearboxes (industrial robots, automotive transmissions)

• Pumps & Compressors (axial thrust management)

• Turbocharger Systems

• Printing Machinery

• Medical Imaging Equipment

 

UJK Quality Commitment:

All bearings feature:

• Premium Steel: High-carbon chromium steel (SUJ2 equivalent).

• Advanced Grinding: Super-finish raceways for low noise/heat generation.

• Rigorous Testing: 100% vibration analysis (ISO 15242-2).

• Lubrication Options: Grease-filled, oil-lubricated, or dry-contact seals.

*Note: Custom preload levels (light/medium/heavy) and sealing solutions (RS1/RS2, 2RS) available upon request.*

 

Why Choose UJK?

• Reduced Downtime: Precision-matched components extend service life.

• Energy Efficiency: Low friction design lowers operating temperatures.

• Global Compliance: Meets ISO 15, DIN 628, and ANSI/ABMA standards.

• Technical Support: Application engineering services for optimal bearing selection.