Lock Nuts (KM, HM, N, AN Series, etc.)

Specifications

How to choose Lock nuts

Points to check when selecting, with the values for this product (Lock Nuts (KM, HM, N, AN Series, etc.)).

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

   This product: Nominal thread size G ≤ 8 5/8 in. (dimension ≤44)

   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

   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

Available in metric trapezoidal thread types and inch-based types, with fixing methods using lock washers, locking clips, or locking plates; types with a built-in locking mechanism in the nut itself; and precision lock nuts fixed with set screws or pins. Nuts and fixing components are ordered separately.

FAQ

Q. What applications are KM, HM, N, and AN series lock nuts used for?

A. They are used for positioning bearings and components on shafts, mounting bearings on tapered shaft fitting surfaces, and removing bearings using removal sleeves.

Q. What types of fixing methods are available for lock nuts?

A. There are metric trapezoidal thread types and inch-based types, with fixing methods using lock washers, locking clips, or locking plates; types with a built-in locking mechanism in the nut itself; and precision lock nuts fixed with set screws or pins.

Q. What types of bearings is KMFE suitable for?

A. KMFE is suitable for axial fixing of CARB and sealed bearings.

Q. Do lock nuts with a locking mechanism require a keyway?

A. No, lock nuts with a locking mechanism do not require a keyway and can be installed quickly.

Q. Can lock nuts and their fixing components be ordered as a set?

A. Nuts and fixing components are ordered separately.

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

Source documents

• Catalog 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） 74 pages
  Found on: https://azuma-eg.com/catalogue/