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Locking Washers, Fixing Clips and Fixing Plates

MB(L)・MB..A・W・MS・PL / SKF (Official website)

Simple and highly reliable fixing devices that prevent lock nuts from loosening. Available in three types: lock washers, clips, and plates.

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

Specifications

Fixing clip configuration Clip, hexagon bolt conforming to EN ISO 4017, spring washer conforming to DIN 128
Fixing plate configuration Plate, two hexagon bolts, wire

How to choose Locking washers

Points to check when selecting, with the values for this product (Locking Washers, Fixing Clips and Fixing Plates).

  1. 1. Match the lock nut designation number

    Select the lock washer according to the designation number of the lock nut it will be used with. Each series is fixed, such as AN/AW-series nuts for metric MB and N-series nuts for inch-series W. Mixing different series will cause the tabs and notches not to align, preventing proper fixing.

  2. 2. Match the inner diameter to the shaft or sleeve diameter

    The inner diameter d corresponds to the thread diameter of the applicable shaft or adapter sleeve. Confirm that the inner tab fits properly into the keyway, together with the keyway width and depth. For inch-series products, pay attention to the unit used in the dimension notation.

  3. 3. Check the outer diameter and nut notch position

    The outer diameter d2 determines whether the outer tab can be bent into the notch of the lock nut. Based on the outer diameter, also check for interference with surrounding housings and seals.

  4. 4. Account for axial space using the thickness

    The thickness B adds to the axial dimension from the bearing to the nut. During design, confirm that the threaded section is long enough and that the plate thickness allows the tab to be bent.

  5. 5. Select material according to the operating environment

    Steel is generally used, but in environments exposed to water or chemicals, consider stainless steel to avoid seizure caused by rust and loss of strength. Also consider compatibility with the nut and shaft materials.

  6. 6. Consider clip or plate systems for large diameters

    This product: Fixing clip configuration Clip, hexagon bolt conforming to EN ISO 4017, spring washer conforming to DIN 128

    For large-diameter nuts or locations where bending the tabs is difficult, a system using fixing clips or fixing plates fastened with bolts can be used. Confirm that all components, including bolts, washers, and wire, are available.

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

About Locking washers and all products

Description

Lock washers are secured by bending the washer tab into the groove of the nut. Fixing clips and fixing plates are fastened to the nut with bolts and engage with the keyway of the shaft or sleeve. Nuts and fixing devices are ordered separately.

Features

  • Simple design with high stability
  • Secure fixing by bolt fastening or tab bending

Applications

  • Preventing loosening of lock nuts
  • Fixing nuts to shafts and adapter sleeves

FAQ

Q. What applications can SKF lock washers, fixing clips and fixing plates be used for with lock nuts?
A. They can be used to prevent lock nuts from loosening and to fix nuts to shafts and adapter sleeves. Lock washers are secured by bending the tab into the groove of the nut, while fixing clips and fixing plates are fastened to the nut with bolts and engage with the keyway of the shaft or sleeve.
Q. What components are included in the fixing clips and fixing plates for SKF MB(L), MB..A, W, MS and PL?
A. Fixing clips consist of a clip, an EN ISO 4017 compliant hexagon bolt, and a DIN 128 compliant spring washer. Fixing plates consist of a plate, two hexagon bolts, and a wire. Nuts and fixing devices are ordered separately.

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

Source documents

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