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KMD Precision Lock Nut with Axial Locking Screw

KMD / SKF (Official website) / Listed on page 15 of the document

A precision lock nut equipped with an axial locking screw. Compatible with M20 to M105.

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

KMD Precision Lock Nut with Axial Locking Screw on page 15 of SKF "軸受付属品（アダプタスリーブ・取り外しスリーブ・ロックナット）"
Source: SKF「軸受付属品（アダプタスリーブ・取り外しスリーブ・ロックナット）」page 15
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Specifications

Nominal thread size G M20x1~M105x2
Axial load capacity 70~580 kN
Mass 0.11~1.37 kg
Recommended Tightening Torque 4.2~14.2 Nm

How to choose Lock nuts

Points to check when selecting, with the values for this product (KMD Precision Lock Nut with Axial Locking Screw).

  1. 1. Select the size and standard to match the shaft thread

    This product: Nominal thread size G M20x1~M105x2

    The nut must fully match the thread of the shaft or sleeve. Metric fine pitch such as M10×0.75, trapezoidal threads such as Tr220×4, and inch series (ANSI/ABMA) are all listed, so verify the nominal diameter, pitch, and thread standard against the drawing.

  2. 2. Do not confuse thread standard series

    Metric KM and HM series and inch N and AN series may look similar but are not interchangeable. Some larger sizes in certain series use trapezoidal threads, so confirm the original standard when repairing existing equipment.

  3. 3. Decide the anti-rotation method

    Methods using lock washers, fixing clips, or locking plates require a keyway on the shaft. Integrated types that rotate-lock with set screws or locking pins do not require a keyway and allow quick installation. Also confirm whether accessories are required.

  4. 4. Verify axial load capacity

    This product: Axial load capacity 70~580 kN

    Nuts receive thrust loads and pressing force during tightening. Listed axial load capacities range widely from 20 to 1340 kN, so confirm sufficient margin against the axial load on the bearing and the force required to press onto a tapered shaft.

  5. 5. Check side face runout for precision applications

    In applications such as main spindles with high rotational speed and accuracy, if the nut side face runs out relative to the thread, the bearing tilts and rotational accuracy decreases. Select a precision lock nut and check the axial runout value of the reference side face.

  6. 6. Check outer diameter and width for clearance

    Confirm that the nut outer diameter does not interfere with housings or seals, and that the width fits within the thread length of the shaft. Also confirm the applicable spanner number used for tightening and the recommended tightening torque.

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

About Lock nuts and all products

Description

Precision lock nut with axial locking screw, thread size M20x1 to M105x2. Nominal numbers KMD4 to KMD21. Locking screw sizes M4 to M6.

Features

  • Equipped with axial locking screw

Applications

  • Bearing fixing in precision equipment

FAQ

Q. What sizes does the KMD Precision Lock Nut with Axial Locking Screw support?
A. It supports thread sizes M20x1 to M105x2. The nominal numbers are KMD4 to KMD21.
Q. What are the axial load capacity and recommended tightening torque of the KMD Precision Lock Nut with Axial Locking Screw?
A. The axial load capacity is 70 to 580 kN, and the recommended tightening torque is 4.2 to 14.2 Nm.
Q. What are the size and application of the locking screw on the KMD Precision Lock Nut with Axial Locking Screw?
A. The locking screws are M4 to M6. They are used for bearing fixing in precision equipment.

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

Source documents

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