Overview

This document provides detailed technical specifications for various bearing series manufactured by THB Bearings Co., Ltd. It includes dimensions, load ratings, speed limits, mass, and other critical parameters for bearing selection and application.

1. Bearing Series and Designations

The document covers multiple bearing series including 760200/760300, ZKLN, ZKLFA, ZKLF, ZARN/ZARN…L, and ZARF/ZARF…L. Each series is identified by specific designation codes and shaft diameters.

2. Dimensions and Mass

For each bearing series, detailed dimensional data is provided, including shaft diameter (d), outer diameter (D), width (B), and other relevant measurements such as r and r1 (fillet radii). Mass values are listed in kilograms or grams, with minimum radii specified for certain features.

Key Points:

• Dimensions are given in millimeters.
• Mass varies by bearing size and series, ranging from a few grams to several kilograms.
• Fillet radii (r, r1) have minimum values to ensure proper fit and function.

3. Load Ratings

Basic dynamic and static load ratings (Cr and Cor) are specified for each bearing type and size, expressed in kilonewtons (kN). These ratings indicate the bearing's capacity to withstand radial and axial loads.

Highlights:

• Dynamic load ratings range widely depending on bearing size and series, e.g., from approximately 12 kN to over 200 kN.
• Static load ratings are generally higher than dynamic ratings, reflecting maximum load capacity without permanent deformation.

4. Limiting Speeds

Maximum permissible rotational speeds are provided for each bearing, differentiated by lubrication type (grease or oil). Speeds are given in revolutions per minute (rpm).

• Typical limiting speeds range from about 700 rpm to over 9000 rpm.
• Note: With effective oil supply, limiting speeds can increase by approximately 30%, except for sealed roller followers.

5. Lubrication and Temperature Considerations

Bearings are designed for grease or oil lubrication. Some series have sealed versions or plastic cages (indicated by suffix “TN”), which affect maximum allowable operating temperatures.

• Plastic cage bearings (suffix “TN”) have a maximum continuous working temperature of 120°C and short-term maximum of 180°C.
• Lubrication type influences limiting speed and bearing life.

6. Additional Features and Installation Details

Information on set screws, tightening torques, and mounting dimensions (e.g., bolt sizes, pitch, and quantity) is included for proper installation.

• Tightening torque values are specified in Newton-meters (Nm) for various bearing sizes.
• Set screw dimensions and quantities are provided to ensure secure mounting.

7. Notes and Recommendations

• All load, speed, and mass data are reference values for selection purposes only.
• Effective oil supply can enhance limiting speeds by about 30%, except for sealed roller followers.
• Plastic cage bearings have temperature limitations that must be observed to avoid damage.

Summary Tables and Data Extraction

The document contains multiple tables listing dimensions, load ratings, mass, and speed limits for each bearing series. Key extracted data includes:

• 760200/760300 Series: Shaft diameters from 20 to 40 mm, dynamic loads up to ~90 kN, limiting speeds up to 6000 rpm.
• ZKLN Series: Shaft diameters 12 to 50 mm, dynamic loads from ~12 kN to 126 kN, limiting speeds up to 7000 rpm.
• ZKLFA Series: Small shaft diameters (6 to 17 mm), dynamic loads 4 to 14.4 kN, limiting speeds up to 14000 rpm.
• ZKLF Series: Shaft diameters 12 to 50 mm, dynamic loads 24.7 to 64 kN, limiting speeds up to 7600 rpm.
• ZARN and ZARN…L Series: Shaft diameters 15 to 90 mm, mass ranging from 340 g to over 11,800 g, radial and axial load ratings, limiting speeds from 700 to 8500 rpm.
• ZARF and ZARF…L Series: Shaft diameters 15 to 90 mm, detailed dimensions, load ratings, tightening torque, and speed limits similar to ZARN series.

Critical Parameters and Limitations

• Observe minimum fillet radii (r, r1) for proper bearing fit.
• Do not exceed specified limiting speeds; consider lubrication type for speed adjustments.
• Plastic cage bearings have strict temperature limits.
• Tightening torques must be followed to ensure secure installation without damage.

Best Practices

• Select bearings based on shaft diameter, load requirements, and speed limits.
• Use effective lubrication to maximize bearing life and performance.
• Follow manufacturer’s installation guidelines including tightening torque and set screw specifications.
• Consider environmental and operational temperature limits, especially for plastic cage bearings.