NU-LOC FLYER

Product catalog summary

Overview: The document provides comprehensive details on the FYH NU-LOC ball bearing units, highlighting their design for easy installation and improved performance through features like 360-degree shaft contact and a true concentric lock.

Key Features:

360° Shaft Contact: Ensures uniform shaft gripping, enhancing operation and extending bearing lifespan.
Concentric Locking Collar: Prevents shaft damage with a single hex head cap screw for easy tightening.
Compatibility: Can replace setscrew and eccentric locking collar inserts.

Specifications:

Precision Design: Meets "S3" air handling series specifications with C2 ball clearance for quieter operation.
Tolerance and Fit: P18 suffix indicates tighter bore tolerance, reducing vibration and noise.

Technical Data:

Dimensions and Mass: Tables provide dimensions, bolt sizes, and mass for various units, accommodating shaft diameters from 20 mm to 60 mm.
Housing Types: Includes various housing types with specific dimensions and mass.

Applications: Ideal for air handling and other demanding applications due to high-precision design and secure housing fit.

Document Overview: Details specifications for tightening torque of concentric cap screws in bearing units by Bearing Units USA Inc., including shaft diameters, bearing and collar numbers, cap screw specifications, and recommended torque values.

Specifications:

Shaft Diameter and Bearing Information: Lists shaft diameters in millimeters and inches with corresponding bearing and collar numbers.
Cap Screw Specifications: Provides thread size options in UNC and metric.
Recommended Torque Values: Offers torque values in foot-pounds, inch-pounds, and Newton-meters.

Key Torque Values:

20 mm (3/4 inch): 5.5 to 6.0 foot-pounds (66 to 73 inch-pounds or 7.4 to 8.2 N·m).
35 mm (1 1/4 inch): 7.5 to 8.3 foot-pounds (90 to 99 inch-pounds or 10.2 to 11.2 N·m).
50 mm (1 15/16 inch): 13.0 to 14.3 foot-pounds (155 to 172 inch-pounds or 17.6 to 19.4 N·m).
60 mm (2 1/4 inch): 30.7 to 33.9 foot-pounds (368 to 407 inch-pounds or 41.6 to 46.0 N·m).

Conclusion: Serves as a technical guide for proper installation of bearing units, ensuring correct torque application to maintain bearing integrity and performance.

Catalog excerpts

NU Concentric-LOC BALL BEARING UNITS CATALOG NO.3401 EASY INSTALLATION 360° SHAFT CONTACT TRUE CONCENTRIC LOCK

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The FYH NU-LOC bearing grips the shaft more uniformly, which allows 360 degrees of equalized locking contact. The roundness of the ball path on NU-LOC bearings results in better operation and longer life. NU-LOC concentric locking collars are designed to prevent shaft maring and burring. A single standard hex head cap screw can be tightened quickly and easily. NU-LOC bearings can replace either setscrew or eccentric locking collar inserts. Ballpath Roundness NU-LOC concentric locking collar with a single cap screw provides great holding power. The collar is installed over the slotted inner ring...

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Grease nipple Standard hex head cap screw Grease hole Concentric locking collar Contact (or Non-contact) Seal & Slinger Ball and cage Wide inner ring The standard NU-LOC series satisfies all the specifications of our air handling series under the "S3" designation. This series incorporates a C2 ball clearance which is more exacting than the standard style, and this allows for quieter operation and a considerable reduction of vibration. The NU-LOC series is a high-precision design and, while it is ideal for air handling applications, it is also excellent for many more highly demanding applications....

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Round flange cartridge type units NU-LOC Cylindrical bore (with concentric locking collar) NCFCF (For USA) is also available. Contact FYH for unit specifcations.

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