6304 ZZ CT Deep Groove Ball Bearing - 20x52x15 mm

Industrial Applications and Versatility

The 6304 ZZ CT is a high-quality deep groove ball bearing (single-row) with key dimensions 20 mm (inner diameter) x 52 mm (outer diameter) x 15 mm (width). The “ZZ” suffix denotes metal shields on both sides, providing protection against contamination and lubrication leakage. The “CT” designation indicates a specific cage/material/variant optimized for reliable industrial use. With its compact dimensions and shielded construction, this bearing is ideal for electric motors, factory automation modules, conveyor systems, agricultural machinery and a broad range of mechanical drives. Because it delivers high durability and dependable performance, it is well suited for maintenance-friendly installations and integrated bearing units across multiple industries.

Key Technical Advantages & Value-Driven Features

• Built as a deep groove ball bearing, it handles radial loads plus moderate axial loads in both directions—making it a go-to for standard duty industrial drives.

• Metal shielded (ZZ) on both sides ensures sealed protection against dust, chips and contaminants—minimizing downtime and simplifying maintenance schedules. (See similar spec-sheet details.)

• The “CT” variant provides enhanced cage stability and performance consistency—ideal for integration into bearing housings or industrial bearing units.

• Standard dimensions 20x52x15 mm facilitate swift replacement, interchangeability, and inventory efficiency—reducing lead times and supporting operational continuity.

• Manufactured from high-grade chromium steel, precision finished, offering smooth rotation, low vibration and long service life—meeting expectations of high-durability components in B2B supply chains.

Technical Specifications (Selected)

• Bore diameter (d): 20 mm

• Outer diameter (D): 52 mm

• Width (B): 15 mm

• Type: Single-row deep groove ball bearing

• Shielding: ZZ (metal shields both sides)

• Designation: CT variant

• Application: Industrial drives, bearing housings, units, automation systems
  These dimensions and features guarantee that the bearing can be mounted in standard bearing housings or used as a component within a complete bearing assembly, delivering high durability and stable performance.

Installation & Maintenance Recommendations

To maximize service life and maintain performance:

• Ensure the shaft and housing run-out is within tolerance, and the mounting surface is clean, dry and aligned.

• Press or heat-fit the bearing as per best practice—avoid impact to inner/outer rings.

• The shielded version requires less frequent maintenance—periodic inspection of temperature, vibration and noise suffices.

• If used in heavily contaminated or high-speed applications, ensure proper lubrication and optimal mounting conditions.
  By following these guidelines, the 6304 ZZ CT will operate reliably, support uptime and reduce life-cycle cost.

FAQ - Frequently Asked Questions

Q1: What does the “ZZ” designation mean in this bearing?
A: “ZZ” indicates metal shields on both sides of the bearing. This helps protect the internal rolling elements from dust, debris and contaminants while retaining lubrication.
Q2: What does the “CT” suffix denote?
A: The “CT” variant often refers to a specific cage design/material or performance variant optimized for industrial usage, where durability and integration in bearing housings are important.
Q3: Are the dimensions 20x52x15 mm standard and interchangeable?
A: Yes - these are common metric dimensions for this bearing series, allowing replacement or interchange in many machines and bearing housing units.
Q4: Is this bearing suitable for heavy loads or very high speeds?
A: While the design supports radial loads and moderate axial loads, for extremely heavy loads or ultra-high speeds, you may require a specialized bearing variant. The shielded 6304 ZZ CT offers excellent durability for standard industrial duty.
Q5: Do you offer fast delivery for business customers?
A: Yes - stock is available and we support 24 h dispatch for B2B orders from our warehouse in Lublin.