Double Row Angular Contact Ball Bearings 3208b 3210 2RS 3210 3211 2RS 3305 3306 2RS 4309 3008 2RS 3800 2RS 3801 2RS 3804 3805 2RS Used for Packaging Machine

• Customization: Available
• Vibration: Zv1 Zv2 Zv3
• Hardness: HRC60--62
• Model NO.: 3208b 3210 2rs 3210 3211 2rs
• 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

Double Row Angular Contact Ball Bearings  3208b 3210 2rs 3210 3211 2rs 3305 3306 2rs 4309  3008 2rs 3800 2rs 3801 2rs 3804 3805 2rs used for Packaging machine



 

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.