NTN UCX 11 D1 Insert Ball Bearing 55x110x65.1 mm

I Overview

The NTN UCX 11 D1 is a premium insert ball bearing with dimensions 55x110x65.1 mm, designed for mounted bearing units operating under medium to heavy-duty conditions. It features a wide inner ring, spherical outer diameter, double-contact nitrile rubber seals, and set screw shaft locking, providing secure shaft retention and reliable performance in demanding industrial environments. Manufactured by NTN Corporation, this bearing is widely used in agriculture, conveyor systems, material handling equipment and general industrial machinery.

What Makes NTN UCX 11 D1 Different?

Key advantages include:

• Genuine NTN product
• OEM-quality manufacturing
• Wide inner ring design
• Spherical outer diameter
• Set screw shaft locking
• Double-contact rubber seals
• High radial load capacity
• Pre-lubricated construction
• Easy installation
• Long service life

Construction and Operating Principle

The bearing consists of:

• Hardened inner ring with extended width
• Spherical outer ring
• Precision steel balls
• Pressed steel cage
• Double-contact nitrile rubber seals
• Two set screws for shaft locking

The spherical outer surface allows automatic alignment within the bearing housing, compensating for minor shaft misalignment while maintaining smooth rotation and high operational reliability. The set screw locking system provides secure shaft attachment without additional locking components.

Material Properties

The bearing is manufactured using premium bearing steel and features:

• Through-hardened bearing steel
• High fatigue resistance
• Excellent wear resistance
• Precision-ground raceways
• Contact nitrile rubber seals
• Corrosion-resistant finish
• Reliable grease retention
• Long operating life

Typical Applications

NTN UCX 11 D1 is commonly used in:

• Agricultural machinery
• Conveyor systems
• Material handling equipment
• Packaging machines
• Industrial fans
• Textile machinery
• Food processing equipment
• Belt conveyors
• Production machinery
• Mounted bearing units

Typical Failure Symptoms

Replacement is recommended if any of the following symptoms occur:

• Excessive bearing noise
• Increased vibration
• Bearing overheating
• Shaft looseness
• Seal damage
• Grease leakage
• Rough rotation
• Excessive radial play

Recommended During Maintenance

During replacement it is recommended to inspect:

• Shaft diameter and condition
• Housing bore
• Set screw condition
• Shaft alignment
• Lubrication
• Sealing condition
• Mounting surfaces
• Adjacent components
• Fasteners
• Bearing housing

Technical Specification

Manufacturer: NTN

Part Number: UCX 11 D1

Type: Insert Ball Bearing

Design: Wide Inner Ring, Spherical Outside Diameter

Inner Diameter: 55 mm

Outer Diameter: 110 mm

Inner Ring Width (B): 65.1 mm

Outer Ring Width (C): 27 mm

Locking Device: Two Set Screws

Sealing: Double Contact Rubber Seals

Seal Material: Nitrile Rubber

Lubrication: Grease Lubricated

Dynamic Load Rating: 52.5 kN

Static Load Rating: 36.0 kN

Operating Temperature: -40°C to +120°C

Application: Mounted bearing units, agricultural machinery, conveyor systems and industrial equipment requiring a 55x110x65.1 mm insert bearing.

Cross References

Manufacturer

• NTN UCX 11 D1
• NTN UCX11D1

Always verify the bearing designation, shaft diameter and housing compatibility before installation.

Related Components

Frequently replaced together with:

• Pillow block housings
• Flange bearing housings
• Take-up units
• Bearing grease
• Shaft collars
• Locking hardware
• Replacement seals
• Bearing housings
• Mounting tools
• Shaft sleeves

Why B2B Customers Choose NTN?

Industrial professionals choose NTN because of:

• OEM-quality manufacturing
• Japanese engineering
• Precision manufacturing
• Reliable sealing
• High load capacity
• Long service life
• Worldwide availability
• Trusted industrial reputation

Professional Industrial Supply

This bearing is regularly supplied to:

• Agricultural equipment manufacturers
• Industrial maintenance departments
• Conveyor system manufacturers
• Machinery builders
• Food processing plants
• Packaging equipment manufacturers
• Mechanical workshops
• Technical distributors
• OEM replacement specialists
• Manufacturing facilities

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FAQ

What is an insert ball bearing?

An insert ball bearing is a self-contained bearing designed for installation into mounted bearing housings. Its spherical outer diameter allows self-alignment within the housing.

What does D1 mean?

The D1 suffix indicates a re-lubricatable version equipped with lubrication provisions for periodic grease maintenance.

How is the bearing locked onto the shaft?

The NTN UCX 11 D1 uses two set screws located in the extended inner ring to securely clamp the bearing onto the shaft.

Is the bearing sealed?

Yes. It is fitted with double-contact nitrile rubber seals that protect the rolling elements against dust, moisture and contaminants while retaining grease inside the bearing.

Where is NTN UCX 11 D1 commonly used?

It is widely used in mounted bearing units for agricultural machinery, conveyors, industrial production equipment, packaging machinery and material handling systems.