Special Motorcycle Bearings 60/22 60/22-2RS 60/22zz 22X44X12 Used for Wheels Crankshaft Engine

• Customization: Available
• Package: Plastic Tube or Single Box
• Precision: P0 P6 P5
• Model NO.: 62/22 62/22-2RS 62/22ZZ 22x44x12
• Transport Package: Single Box
• Specification: small
• Trademark: UJK
• Origin: China
• HS Code: 848210
• Production Capacity: 600000

Product Description

 

60/22  60/22-2RS  60/22Z
Deep groove ball bearing   motorcycle bearings
Boundary Dimensions (mm)	Bore Dia	d	22
	Outer Dia	D	44
	Width	B	12

Technical Brief: UJK Motorcycle Bearings

1. Function & Key Features
UJK bearings are precision components designed to support rotating shafts in motorcycles, reducing friction, ensuring alignment, and enhancing durability under high-speed, high-load, and variable-temperature conditions. Key features include:

• Material: High-carbon chromium steel (e.g., SUJ2) or stainless steel for corrosion resistance1.

• Sealing: Options like 2RS (double rubber seals) or ZZ (metal shields) prevent contamination from dust/moisture1.

• Precision: Tolerance classes up to P4 (ISO standard) for reduced vibration and noise1.

• Special Designs: Angular contact bearings (e.g., AC) handle combined radial/axial loads; tapered rollers (e.g., 30200 series) suit wheel hubs1.

2. Model Identification System
UJK follows ISO/ABMA bearing codes. A typical model (e.g., 6205-2RS/C3) is decoded as:

• Basic Code:

  • 6: Type (e.g., 6 = Deep Groove Ball Bearing).

  • 2: Dimension series (width/diameter profile, e.g., 2 = light series).

  • 05: Bore size = 05×5 = 25 mm (for codes ≥04, multiply by 5)12.

• Suffixes:

  • -2RS: Double rubber seals.

  • /C3: Radial clearance > standard (suits thermal expansion)1.

3. Size-to-Model Conversion
To identify a UJK model from dimensions:

1. Bore Diameter (d):

   • If 20-480 mm, calculate: d = Last two digits of model × 5 (e.g., 05 → 25 mm)2.

   • For d < 20 mm: 00=10 mm, 01=12 mm, 02=15 mm, 03=17 mm1.

2. Outer Diameter (D) & Width (B): Cross-reference with dimension tables (no direct formula)23.
   Example: A bearing with d=25 mm, D=52 mm, B=15 mm corresponds to 62052.

4. Motorcycle-Specific Design

• High RPM: Cage designs (e.g., brass M or polymer T) minimize centrifugal force1.

• Load Capacity: Cylindrical roller bearings (e.g., NU, NJ series) for drive sprockets; thrust bearings for clutch assemblies1.

• Temperature: Suffixes like X28 (200°C limit) for exhaust/crankcase areas1.