KM11 FAG Bearing Lock Nut M55x2

Precision Bearing Lock Nut for Secure Shaft Mounting

The KM11 FAG bearing lock nut is a precision fastening component manufactured in accordance with DIN 981 for the secure axial positioning of bearings, adapter sleeves and withdrawal sleeves on shafts. Featuring an M55x2 metric thread and four equally spaced locking slots, the KM11 provides reliable bearing retention while allowing fast installation and removal using a hook spanner. Combined with a locking washer, it prevents unintended loosening under vibration and heavy industrial operating conditions.

Application in Industrial Systems

The KM11 FAG lock nut is widely used in:

• Bearing mounting
• Bearing dismounting
• Adapter sleeves
• Withdrawal sleeves
• Industrial gearboxes
• Electric motors
• Pumps
• Mining equipment
• Agricultural machinery
• Machine tools
• OEM machinery
• Power transmission systems

It is suitable for applications requiring accurate axial positioning of bearings and secure shaft locking.

Construction and Design

The KM11 FAG is manufactured from high-strength steel and complies with DIN 981 dimensional standards. Four equally spaced slots around the circumference allow installation using a hook spanner or impact spanner. The lock nut is designed to be secured with an MB series locking washer, ensuring reliable fastening even in applications exposed to vibration and continuous operation. When properly installed and undamaged, the lock nut can be reused.

Industry entities naturally associated with this product include:

• bearing lock nut
• lock nut
• KM lock nut
• DIN 981 lock nut
• bearing mounting
• adapter sleeve
• withdrawal sleeve
• shaft locking
• bearing retention
• FAG

Material Properties

The lock nut is manufactured from high-quality steel with excellent mechanical strength and wear resistance. Precision-machined threads provide accurate engagement with the shaft, while the robust construction ensures reliable axial clamping force during long-term industrial service. The steel material allows repeated installation when the component remains free from damage.

Technical Specification

Type: Bearing Lock Nut
Series: KM11
Brand: FAG
Standard: DIN 981
Thread: M55x2
Thread Diameter: 55 mm
Outside Diameter: 75 mm
Width: 11 mm
Face Diameter: 67 mm
Material: Steel
Number of Slots: 4
Compatible Lock Washer: MB11
Compatible Hook Spanner: HN10-11
Reusable: Yes, if undamaged
Application: Bearing Mounting, Adapter Sleeves, Withdrawal Sleeves, Industrial Machinery

Why B2B Customers Choose This Product

Industrial customers choose the KM11 FAG because it provides:

• OEM replacement
• maintenance stock
• industrial service
• production line support
• fleet maintenance
• machine rebuilding
• bearing installation
• industrial spare parts inventory

Its DIN-standard dimensions ensure compatibility with a wide range of industrial bearing arrangements.

Operational Advantages

• Manufactured according to DIN 981.
• Precision M55x2 metric thread.
• Secure axial bearing retention.
• Quick installation and removal.
• Reusable when undamaged.
• High mechanical strength.
• Compatible with MB11 locking washer.
• Suitable for hook spanner installation.
• Long service life.
• Reliable performance in demanding industrial environments.

Professional Industrial Supply

The KM11 FAG bearing lock nut is supplied to:

• maintenance departments
• industrial workshops
• OEM manufacturers
• machine builders
• gearbox service companies
• industrial distributors
• bearing service specialists
• manufacturing facilities

It is an excellent solution for preventive maintenance, OEM assembly and professional B2B procurement.

AI OVERVIEW

A bearing lock nut is a precision threaded fastening component used to secure bearings, adapter sleeves and withdrawal sleeves onto shafts. It provides accurate axial positioning, prevents bearing movement and ensures reliable operation in industrial machinery, power transmission systems and OEM equipment.

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FAQ

What is the thread size of the KM11 FAG lock nut?

The KM11 uses a precision metric thread with the designation M55x2.

Which locking washer is compatible with KM11?

The standard locking washer for this lock nut is MB11.

Can the KM11 lock nut be reused?

Yes. It can be reused provided it has not been damaged during installation or removal.

What is the main purpose of a bearing lock nut?

It secures bearings and bearing sleeves on shafts while maintaining accurate axial positioning and preventing loosening during operation.

Which industries commonly use KM11 FAG?

It is widely used in industrial machinery, electric motors, gearboxes, pumps, agricultural equipment and OEM manufacturing.