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EasyFit NC-Ball Bearing Units

EasyFit NC-Ball Bearing Units
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EasyFit NC-Ball Bearing Units

Product catalog summary
Introduction
The EasyFit NC-Ball Bearing Units (BBUs) are engineered to improve installation efficiency and prolong bearing service life. They feature a 360° clamping system for easy mounting, reducing shaft damage and ensuring quieter operation and extended bearing life.
Key Benefits
  • Easy Mounting: Facilitates quick shaft mounting with a standard hex head cap screw, providing complete circumferential fixation of the bearing inner ring.
  • 360° Clamping: Minimizes shaft damage and deformation, reducing vibration and noise during high-speed operations.
  • Extended Bearing Life: Optimized ball raceway roundness ensures smoother operation, preventing fretting and increasing lifespan.
Specifications
The document details specifications for various EasyFit NC-Ball Bearing Units models, including dimensions, bolt sizes, and recommended tightening torques, suitable for shaft diameters from 20 mm to 60 mm.
Recommended Tightening Torque
Torque recommendations vary based on bore diameter and cap screw size to ensure optimal performance and safety.
Notes
  • Refer to the general BBU catalogue No BS006EN-ODS for more technical information.
  • Steel and cast iron covers are not applicable for the NC series.
  • Special grease filling is available upon inquiry.
Overview
The document provides technical specifications and improvements for Koyo's EasyFit NC-series ball bearing inserts, designed for blower applications, highlighting features, improvements, and technical specifications.
Specifications
The EasyFit NC-series includes ball bearing inserts with a cylindrical bore and spherical outer diameter, suitable for shaft diameters from 20 to 60 mm, with a recommended shaft tolerance for blower use, denoted as S3.
Major Improvements
  • Optimized Performance Design: New pillow block housing design with a flat bottom face for secure mounting, reducing vibration, and enhancing strength by 30% while reducing weight by 7%.
  • New Seal Design: Inward-facing lip seals improve lubrication, directing grease back towards the balls and raceway, extending bearing life.
  • Lithium Bearing Grease Upgrade: Supplied with high-quality NLGI 2 lithium complex grease for improved performance under extreme conditions.
Technical Data
Includes detailed tables with dimensions, bearing mass, and recommended cap screw tightening torque for various bore diameters, along with dimensional tolerances for shafts.
Additional Notes
Steel and cast iron covers are not applicable for the NC series, and special grease filling is available on inquiry. References the JHS-3i New Pillow Blocks flyer for more details.
Contact Information
Lists contact details for JTEKT's European headquarters and branch offices across Europe, providing phone numbers and email addresses for inquiries.
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Catalog excerpts

EasyFit NC-Ball Bearing Units-1

EasyFit NC-Ball Bearing Units 360° Clamping

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EasyFit NC-Ball Bearing Units-2

EasyFit NC-Ball Bearing Units 3 Major Benefits Easy Mounting Extending bearing life Introduction With the introduction of our new EasyFit NC-Ball Bearing Units (BBU’s), we have been able to meet customer’s needs to improve and shorten installation. Besides an easy installation, EasyFit NC BBU’s will give a longer service life and an improved 360° clamping. Cross-Section Detail Standard hex head cap screw Concentric locking collar 3 Major Benefits 1. Easy mounting With Koyo’s EasyFit NC BBU’s the shaft can be mounted more easily and quickly. By tightening a standard hex head cap screw in the concentric...

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EasyFit NC-Ball Bearing Units-3

Pillow type units EasyFit NC-Series NCP Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-4

Tapped-base pillow type units EasyFit NC-Series NCPA Cylindrical bore (with concentric locking collar) d 20 ~ 50 mm B1 Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-5

Round flange cartridge type units EasyFit NC-Series NCFC Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm S Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-6

Square four-bolt flange type units EasyFit NC-Series NCF Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm S Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis. Bolt Size

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EasyFit NC-Ball Bearing Units-7

Square four-bolt flange type units EasyFit NC-Series NCF-E Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm S Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis. Bolt Size

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EasyFit NC-Ball Bearing Units-8

Rhombic flange type units EasyFit NC-Series NCFL Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-9

Rhombic flange type units EasyFit NC-Series NCFL-E Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-10

Take-up type units EasyFit NC-Series NCT Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm S Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-11

Take-up type units EasyFit NC-Series NCT-E Cylindrical bore (with concentric locking collar) d 20 ~ 60 mm S Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-12

Adjustable rhombic – flanged type units EasyFit NC-series NCFA Cylindrical bore (with concentric locking collar) d 20 ~ 55 mm Bolt Size Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-13

Ball bearing inserts EasyFit NC-series NC Cylindrical bore and spherical outer diameter (with concentric locking collar) d 20 ~ 60 mm B1 Basic Load Ratings kN C Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006ENODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-14

Ball bearing inserts EasyFit NC-series NC-ERC Cylindrical bore with cylindrical outer diameter + snapring (with concentric locking collar) d 20 ~ 60 mm B1 C f a 2 7/16 Note : See NC insert series for additional dimensions and load ratings. Cap Screw Tightening Torque (recommended) Bore diam. • See our general BBU cataloque No BS006EN-ODS for more technical information. • For the NC series steel and cast iron covers are not applicable. • Special grease filling only on inquiry basis.

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EasyFit NC-Ball Bearing Units-15

Note: BBU’s are 100% noise tested, fit for blower applications. Recomended shaft tolerance for blower use Dimensional tolerance of shaft used for NC-bearings for blowers. unit: μm Shaft dia. (mm) Dimensional tolerance of shaft h5 Three Major Earlier Improvements Koyo's new EasyFit NC BBU's also incorporate three major improvements that were introduced earlier to the whole BBU range. 1. New Optimized Performance design 2. New Seal Design for high performance lubrication Pillow Block Housing with flat bottom face containing no recess. The optimized performance design ensures a more secure and firm...

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