Angular Contact Ball Bearings 5001 2RS 5200zz 5202zz 5203RS 5203z 5203zz 5204 2RS 5204RS 5204z 5204zz 52052RS 5205RS 5205z 52062RS 5206RS 5206z

UJK Double Row Angular Contact Ball Bearings: High-Precision Solutions for Combined Loads

UJK double row angular contact ball bearings deliver exceptional rigidity, rotational accuracy, and bidirectional axial/radial load capacity in a compact design. Ideal for applications demanding high-speed performance and resistance to complex force interactions (e.g., machine tools, automotive systems), these bearings minimize axial space while maximizing stability. Below is a technical breakdown of key series:

Series & Dimensional Ranges

1. 3200 & 3300 Series: Standard Duty

• Design: Optimized for moderate radial loads with bidirectional axial support. Contact angle: 30°-40°38.

• Applications: Gearboxes, pump shafts, industrial fans.

• Dimensions:

  Series	d (mm)	D (mm)	B (mm)
  3200	10-50	30-90	14-30
  3300	12-60	35-110	18-44.4	89
  Example: 3310A/C3: 50×110×44.4 mm8.

2. 5200 & 5300 Series: Heavy-Duty & High-Speed

• Design: Enhanced load capacity with C3 internal clearance for thermal stability. Supports speeds up to 7,100 rpm (oil-lubricated)29.

• Applications: Machine tool spindles, electric vehicle drivetrains.

• Dimensions:

  Series	d (mm)	D (mm)	B (mm)
  5200	20-80	40-150	18-40
  5300	25-110	47-170	20-44	49
  Example: 5208: 40×80×30.2 mm2.

3. 3800 Series: Compact Stainless Steel

• Design: Corrosion-resistant (440C stainless steel), ideal for harsh environments. ABEC-5 precision with Z2 vibration class45.

• Applications: Food processing, marine equipment, medical devices.

• Dimensions:

  d (mm)	D (mm)	B (mm)
  4.7-38	12-80	7-26	4

Technical Highlights

• Precision & Durability:

  • ABEC-3/5 precision grades4.

  • Optional hybrid ceramic balls (SiN) for 3-5× longer lifespan and 60% weight reduction1.

• Configuration Flexibility:

  • Open, shielded (ZZ), or rubber-sealed (2RS) variants15.

  • C3 clearance standard for thermal expansion management8.

• Performance Metrics:

  • Limiting speeds: 5,600 rpm (grease), 7,100 rpm (oil)2.

  • Axial load ≤50% of radial load capacity3.

Applications

• Industrial Machinery: Machine tool spindles (5200/5300 series)39.

• Automotive: EV motor shafts, steering systems (3300 series)310.

• Robotics & Medical: Articulated arms, imaging devices (3800 stainless series)14.