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Stainless Steel Insert Bearing F-UC Series

F-UC / NSK (Official website)

Stainless steel insert bearing. Sealed with mold oil and used installed in a housing. Accommodates shaft diameters of 20 to 50 mm and supports filling with food-grade grease.

Last verified: (date the content was verified against the source document)

Specifications

Shaft diameter d 20〜50 mm
Outer diameter D 47 to 90 mm
Basic dynamic load rating Cr 9900 to 27000 N
Basic static load rating C0r 6650 to 23200 N
Grease Operating Temperature Range (Food-Grade Grease) -20 to +110 ℃
Operating temperature range -15 to +80 (continuous operation at +60 or below) ℃
Mass 0.17 to 0.80 kg

How to choose Bearing units

Points to check when selecting, with the values for this product (Stainless Steel Insert Bearing F-UC Series).

  1. 1. Select the bore to suit the shaft diameter

    This product: Shaft diameter d 20〜50 mm

    Units are designated by applicable shaft diameter, with metric and inch systems mixed. Confirm the shaft dimension system and select the corresponding diameter. Set-screw and collar types with cylindrical bores can be used with loose shaft tolerances, but if a recommended shaft tolerance is specified, follow it.

  2. 2. Verify life using the dynamic load rating

    This product: Basic dynamic load rating Cr 9900 to 27000 N

    The basic dynamic load rating Cr is the reference value for life calculation. Calculate the required life from the radial and axial loads acting on the shaft and the rotational speed, and select a size with a sufficient Cr margin. Even at the same shaft diameter, the value differs depending on the bearing series.

  3. 3. Check static and shock loads against C0r

    This product: Basic static load rating C0r 6650 to 23200 N

    For applications involving high loads or shocks during low-speed rotation, oscillation, or while stopped, check the load ratio against the basic static load rating C0r. In heavy-duty equipment such as levelers, the static rating margin as well as the dynamic rating is a factor in selection.

  4. 4. Choose the shaft fixing method by application

    Set-screw types are easy to install and suit general applications, eccentric locking collar types suit applications with a constant direction of rotation, and tapered bore with adapter types provide reliable shaft clamping and suit vibration or high speed. For set-screw types, fixing at the specified tightening torque is the key to preventing loosening.

  5. 5. Confirm rotational speed and temperature conditions

    The permissible rotational speed varies with the fixing method and seal type. In high-temperature environments, check the limiting temperature as well as the usable temperature of the seal material and sealed grease. For high temperature and high speed, selecting a re-greasable grease-lubricated type makes maintenance easier.

  6. 6. Permissible installation angle and misalignment

    Insert bearings with a spherical outside diameter can absorb shaft inclination caused by installation errors. Check the permissible misalignment value and confirm that frame accuracy and shaft deflection fall within that range. When re-greasing, note that the permissible angle becomes smaller.

This guide was written by AI based on the listed products' documents and specification items.

About Bearing units and all products

Description

Outer ring outside diameter 47 to 90 mm, bore equivalent to shaft diameter 20 to 50 mm, cylindrical hole with set screw locking. Bearing material is martensitic stainless steel. Cage and seals are corrosion-resistant materials. F-UC◯◯/L596 filled with USDA-certified food-grade grease CALTEX FM Grease EP2 is also available. Heat-resistant specification allows use up to 200 ℃.

Features

  • Long relubrication-free service life due to mold oil
  • Low bearing torque
  • Compatible with food-grade grease filling
  • Conforms to ISO standard dimensions

Applications

  • Food processing machinery
  • General machinery
  • Packaging machinery

FAQ

Q. What applications can the F-UC Series be used for?
A. It can be used in food processing machinery, general machinery, and packaging machinery. It is a stainless steel insert bearing installed in a housing.
Q. What is the range of shaft diameters and outside diameters the F-UC Series supports?
A. It supports shaft diameter d of 20 to 50 mm and outside diameter D of 47 to 90 mm. It conforms to ISO standard dimensions.
Q. Does the F-UC Series support food-grade grease?
A. Yes, it supports filling with food-grade grease. F-UC◯◯/L596 filled with USDA-certified food-grade grease CALTEX FM Grease EP2 can also be specified. The operating temperature range for food-grade grease is -20 to +110 ℃.
Q. What is the operating temperature range and heat-resistant specification of the F-UC Series?
A. The operating temperature range is -15 to +80 ℃, with continuous operation at +60 ℃ or below. The heat-resistant specification allows use up to 200 ℃.
Q. What are the materials and lubrication method of the F-UC Series?
A. The bearing material is martensitic stainless steel, and the cage and seals are corrosion-resistant materials. It is sealed with mold oil, and its key feature is long relubrication-free service life due to the mold oil.

Written by AI based on the content of the source documents.

Source documents

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