• Dimensions

  Bore diameter	750 mm
  Outside diameter	1000 mm
  Width	250 mm

  Performance

  Basic dynamic load rating	6160 kN
  Basic static load rating	16600 kN
  Grease Reference speed	190 r/min
  Oil Limiting speed	280 r/min

• Properties

  
  

  Bore type	Cylindrical
  For Load Direction	Radial
  Number of rows	double row
  Radial internal clearance	C4
  Tolerance class for dimensions	Nomal
  Tolerance class for run-out	P6
  Seal type	Without
  Lubricant	None
  Relubrication feature	Without

• Weight and Material

  Product net weight	558 kg
  Roller material	Chrome steel
  Ring Material	Chrome steel
  Cage	BRASS

JRZC Double Row Cylindrical Roller Bearings: Solving Your Key Equipment Challenges

In heavy machinery and high-precision drives, equipment often struggles with trade-offs between heavy load capacity and high speed, limited installation space, and costly downtime. With two optimized designs (full complement and cage-guided), JRZC Double Row Cylindrical Roller Bearings provide targeted solutions to the following customer pain points.

1. Eliminating “Soft Foot” and Inadequate Rigidity Under Heavy Loads

Customer pain point: When equipment experiences extreme radial or impact loads, ordinary bearings easily deform, leading to spindle deflection and reduced machining accuracy.

JRZC solution: The double-row design delivers exceptional radial load capacity and system rigidity. The full complement version maximizes the number of rolling elements (no cage), enabling the bearing to withstand extreme radial and impact loads. This ensures stable performance in heavy-duty applications such as rolling mills and mining equipment, even under harsh conditions.

2. Overcoming Load Limits in Compact Spaces

Customer pain point: As equipment becomes smaller and more powerful, standard bearings struggle to provide sufficient load capacity within limited shaft diameters.

JRZC solution: Compared to single-row or conventional double-row bearings, JRZC offers higher dynamic and static load ratings within the same cross-sectional height. This allows for more compact equipment designs and higher output without increasing overall size.

3. Preventing High-Temperature and Failures at High Speeds

Customer pain point: Bearings running at high speeds tend to overheat, causing premature grease breakdown and bearing seizure.

JRZC solution: For medium-to-high speed applications, JRZC offers a cage-guided design that precisely guides the rollers, reducing friction and collision between rolling elements. This keeps temperature rise extremely low even at high speeds. Combined with advanced heat treatment, the bearings deliver low vibration, low noise, and low temperature rise.

4. Solving Installation and Maintenance Difficulties in Complex Conditions

Customer pain point: Dismantling bearings in confined spaces is difficult, and traditional bearings often seize when encountering minor shaft deflection or misalignment.

JRZC solution:

• Convenience: The separable design allows independent mounting or removal of the inner or outer ring, simplifying service in complex shaft assemblies and significantly reducing downtime.

• Tolerance: JRZC bearings accommodate minor shaft deflection or misalignment during installation or operation, ensuring reliable performance in vibrating environments.

5. Improving Reliability and Reducing Life Dispersion

Customer pain point: Bearings from the same batch show inconsistent service life across identical equipment, indicating poor reliability.

JRZC solution: JRZC bearings are manufactured from high-purity bearing steel (e.g., GCr15) with optimized roller profiles that eliminate edge stress concentration. Tight tolerance grades (P5/P6 optional) ensure consistent rigidity, load capacity, and calculated service life, significantly improving equipment MTBF.