1. Product Specifications & Comparison
Model |
6212ZZ |
6213ZZ |
6214ZZ |
Inner Diameter (mm) |
60 |
65 |
70 |
Outer Diameter (mm) |
110 |
120 |
125 |
Thickness (mm) |
22 |
23 |
24 |
Dynamic Load Rating (Cr) |
52,500 N |
57,500 N |
62,000 N |
Static Load Rating (C0r) |
36,000 N |
40,000 N |
44,000 N |
Max Speed (Open) RPM |
5,600 |
5,300 |
5,000 |
Key advantages: Double-shielded (ZZ) design for dust resistance, C3 internal clearance for thermal stability in smelting environments[3][7].
2. Detailed Applications
Primary Industries Served:
- Smelting Plants: Conveyor systems handling molten copper (up to 200°C intermittent exposure)[2]
- Steel Rolling Mills: Support rollers in hot strip mills requiring 5,000+ RPM operation[3][8]
Operational Benefits:
- Reduced lubrication frequency: ZZ seals retain grease for 6-8 months in high-particulate environments
- Axial load capacity: 40% of radial rating for misalignment compensation
3. Usage Scenarios
Scenario 1: Copper Anode Casting Line
- Equipment: Rotary casting wheel
- Challenge: Bearing failure every 3 months due to copper splatter
- Solution: 6213ZZ with enhanced shield coating (MT50)
- Outcome: 11-month service life extension
4. Real Client Case Studies
Case 1: Jiangxi Nonferrous Metals Group
- Application: Zinc ingot conveyor system
- Previous Issue: 62% downtime from bearing corrosion
- Implementation: 6212ZZ with NSF-H1 certified grease
- Result: 14-month maintenance-free operation[2][7]
Case 2: Baosteel Hot Rolling Division
- Application: Coiling machine tension rollers
- Challenge: Vibration exceeding ISO 10816-3 limits
- Solution: 6214ZZ with precision P6 tolerance
- Result: 63% reduction in harmonic vibration[3][8]
5. Request a Quote
Contact our metallurgical bearing specialists:
Technical Support Includes:
- Bearing life calculation per ISO 281:2007
- Custom sealing solutions for slag exposure
[2] NSK 6212轴承(nsk品牌旗下产品)-百科
[3] 6213ZZ轴承_NSK轴承6213ZZ尺寸规格参数报价-NSK轴承型号查询
[7] 轴承6214_深沟球轴承_内径70外径125_NSK-苏州凯诺永晟轴承有限公司
[8] 球轴承-NSK中国官网