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UCPE type (Pillow block unit, cylindrical bore with set screw)

UCPE / NSK Ltd. (Official website) / Listed on page 6 of the document

Ductile cast iron pillow block bearing unit with a spherical outer diameter insert bearing. Lighter and stronger than gray cast iron units.

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

UCPE type (Pillow block unit, cylindrical bore with set screw) on page 6 of NSK Ltd. "Ball Bearing Units with Ductile Cast Iron Housing"
Source: NSK Ltd.「Ball Bearing Units with Ductile Cast Iron Housing」page 6
A reduced image of the relevant page is quoted from the document. Copyright belongs to NSK Ltd..Request removal

Specifications

Shaft diameter d 12～60 mm
Basic dynamic load rating Cr 12.8～52.5 kN
Basic static load rating C0r 6.65～36.0 kN
Mass 0.5～3.7 kg

How to choose Bearing units

Points to check when selecting, with the values for this product (UCPE type (Pillow block unit, cylindrical bore with set screw)).

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

    This product: Shaft diameter d 12～60 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 12.8～52.5 kN

    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 6.65～36.0 kN

    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

Uses a ductile cast iron (FCD450) housing, approximately 40% lighter and approximately 30% stronger than a typical gray cast iron housing. Interchangeable with standard NSK bearing units. Cylindrical bore type with set screw fixing.

Features

  • Lightweight and high strength with ductile cast iron construction
  • Interchangeable with standard NSK units
  • Grease-fitted type (D1 suffix) and non-greased type available

Applications

  • Shaft support in general industrial machinery
  • Use in harsh environments

FAQ

Q. What are the shaft diameter and load rating ranges for the UCPE type?
A. Shaft diameter d ranges from 12 to 60 mm, basic dynamic load rating Cr from 12.8 to 52.5 kN, and basic static load rating C0r from 6.65 to 36.0 kN.
Q. What material is used for the housing of the UCPE type?
A. It uses a ductile cast iron (FCD450) housing, approximately 40% lighter and approximately 30% stronger than a typical gray cast iron housing.
Q. Can the UCPE type replace existing NSK bearing units?
A. Yes, it is interchangeable with standard NSK bearing units.
Q. How do I choose the fixing method and lubrication option for the UCPE type?
A. It is a cylindrical bore type fixed with set screws. Grease-fitted (D1 suffix) and non-greased types are available.
Q. What applications is the UCPE type suited for?
A. It is intended for shaft support in general industrial machinery and for use in harsh environments.

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

Source documents

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