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Stainless Steel Pillow Block Ball Bearing Unit F-UCPM2 Series

F-UCPM2 / NSK (Official website)

Pillow block unit combining a stainless steel housing with a cylindrical bore, set-screw type bearing with molded oil enclosed. Offers excellent corrosion resistance, requires no lubrication, and suits clean environments. Compatible with shaft diameters of 20 to 50 mm.

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

Specifications

Shaft diameter d 20〜50 mm
Housing material Austenitic stainless steel casting (SCS13)
Bearing material Martensitic stainless steel (equivalent to SUS440C)
Mounting bolt size M10 to M16
Operating temperature range -15 to +80 (continuous operation at +60 or below) ℃
dn Value Upper Limit 12×10^4
Mass 0.6 to 5.5 kg

How to choose Bearing units

Points to check when selecting, with the values for this product (Stainless Steel Pillow Block Ball Bearing Unit F-UCPM2 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

    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

    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

The housing is made of austenitic stainless steel cast steel (SCS13). The bearing is made of martensitic stainless steel, and the materials of the cage, seals, and other components are selected with emphasis on corrosion resistance. The molded oil consists of lubricating oil and polyolefin resin, and gradually seeps out to provide long-term lubrication. The operating temperature range is -15 to +80°C (continuous operation at +60°C or below), and a dn value of 12×10^4 or less is recommended. Mounting dimensions are compatible with ISO standards.

Features

  • Excellent corrosion resistance
  • Long lubrication life with molded oil
  • Suppresses oil leakage and contamination of surroundings
  • Low bearing torque
  • Interchangeable with other companies' ISO standard units

Applications

  • Food processing machinery
  • Packaging machinery
  • Chemical processing machinery
  • Equipment requiring a clean working environment

FAQ

Q. What environments and applications is the F-UCPM2 Series suitable for?
A. It offers excellent corrosion resistance and requires no lubrication, making it suitable for clean environments. It is used in food processing machinery, packaging machinery, chemical processing machinery, and equipment requiring a clean working environment.
Q. What are the shaft diameters and the materials of the housing and bearing for the F-UCPM2 Series?
A. It accommodates shaft diameters d of 20 to 50 mm. The housing is made of austenitic stainless steel cast steel (SCS13), and the bearing is made of martensitic stainless steel (equivalent to SUS440C).
Q. What are the operating temperature range and the upper limit of the dn value for the F-UCPM2 Series?
A. The operating temperature range is -15 to +80 °C, with continuous operation at +60 °C or below. A dn value of 12×10^4 or less is recommended.
Q. What are the mounting bolt sizes and mounting dimension compatibility of the F-UCPM2 Series?
A. The mounting bolt sizes are M10 to M16. Mounting dimensions are compatible with ISO standards.
Q. How is the F-UCPM2 Series lubricated, and what is its lubrication life?
A. It is sealed with molded oil, which consists of lubricating oil and polyolefin resin and gradually seeps out to provide long-term lubrication. It suppresses oil leakage and contamination of the surroundings.

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

Source documents

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