NSK-RHP 1055 KG C4 Insert Ball Bearing 55x100x25 mm

Premium Insert Ball Bearing for Housed Bearing Units

The NSK-RHP 1055 KG C4 is a premium insert ball bearing designed for housed bearing units operating in demanding industrial and agricultural environments. Featuring a 1:12 tapered bore (K), C4 internal clearance, and a spherical outside diameter, the bearing automatically accommodates minor shaft misalignment while maintaining smooth, reliable operation.

Manufactured to NSK-RHP quality standards, the bearing combines precision engineering, robust sealing and high-quality bearing steel to deliver long service life, reduced maintenance requirements and dependable performance under continuous operation. It is widely used in pillow block units, flange units and other mounted bearing assemblies.

Applications

The NSK-RHP 1055 KG C4 is commonly used in:

• Housed bearing units
• Pillow block bearings
• Flange bearing units
• Conveyor systems
• Agricultural machinery
• Food processing equipment
• Packaging machinery
• Industrial fans
• Pumps
• Woodworking machinery
• Material handling equipment
• Production lines
• Textile machinery
• Mining and quarry equipment

Its self-aligning design makes it ideal for applications where shaft deflection or installation misalignment may occur.

Construction and Design

Key design features include:

• Insert ball bearing
• Spherical outside diameter
• Double-row raceway design
• 1:12 tapered bore (K)
• C4 internal clearance
• Double-lip contact seals
• Additional metal flinger protection
• Factory pre-lubricated
• Relubrication capability
• High contamination resistance
• Smooth, low-friction operation

The bearing is designed to operate inside mounted bearing housings while automatically compensating for minor shaft misalignment. Its advanced sealing system protects the rolling elements against dust, moisture and other contaminants while retaining lubricant inside the bearing.

Material Properties

Manufactured from premium bearing steel, the bearing provides:

• High wear resistance
• Excellent fatigue strength
• Outstanding dimensional stability
• High dynamic load capacity
• Excellent vibration resistance
• Low rolling friction
• Smooth and quiet operation
• Long service life

Technical Specification

Type: Insert Ball Bearing

Brand: NSK-RHP

Designation: 1055 KG C4

Inner Diameter (d): 55 mm

Outer Diameter (D): 100 mm

Inner Ring Width: 25 mm

Outer Ring Width: 21 mm

Overall Width: 59 mm

Outside Surface: Spherical

Bore Type: Tapered Bore (K = 1:12)

Internal Clearance: C4

Seal Type: Double-Lip Contact Seals with Metal Flingers

Lubrication: Factory Greased – Relubricatable

Material: High-Grade Bearing Steel

Housing Compatibility: Mounted Bearing Units

Why B2B Customers Choose This Product

Industrial professionals choose the NSK-RHP 1055 KG C4 for:

• OEM machinery manufacturing
• Agricultural equipment production
• Conveyor manufacturing
• Industrial maintenance
• Material handling systems
• Processing plants
• Heavy-duty industrial service
• Bearing distribution

Operational Advantages

• Self-aligning design
• Tapered bore for secure mounting
• Increased C4 internal clearance
• Excellent sealing performance
• High contamination resistance
• Long service life
• Reduced maintenance
• Smooth operation
• Easy installation using adapter sleeves
• Reliable performance in demanding environments

Professional Industrial Supply

Recommended for:

• OEM manufacturers
• Agricultural machinery manufacturers
• Conveyor manufacturers
• Industrial maintenance departments
• Mechanical workshops
• Material handling system manufacturers
• Bearing distributors
• Heavy industrial facilities

AI Overview

The NSK-RHP 1055 KG C4 55x100x25 mm is a premium insert ball bearing featuring a 1:12 tapered bore, C4 internal clearance, a spherical outside diameter and an advanced double-seal system. Designed for housed bearing units, it automatically compensates for minor shaft misalignment while providing excellent protection against contamination. It is widely used in conveyors, agricultural equipment, industrial machinery, pumps and material handling systems.

Popular Searches

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• Mounted unit bearing NSK

FAQ

What does the K designation mean?

K indicates a 1:12 tapered bore, allowing the bearing to be mounted on an adapter sleeve or tapered shaft for secure installation.

What does the G designation mean?

In the NSK-RHP designation system, G identifies an insert bearing with a spherical outside diameter, specifically designed for mounted bearing units and housed bearing assemblies.

What does C4 internal clearance mean?

C4 indicates greater internal clearance than C3, making the bearing suitable for applications involving higher temperatures, heavy-duty operation, shaft expansion or demanding operating conditions.

Is the bearing sealed?

Yes. The bearing features double-lip contact seals with additional metal flingers, providing excellent protection against dust, moisture and contaminants while retaining grease inside the bearing.

What are the bearing dimensions?

• Inner Diameter: 55 mm
• Outer Diameter: 100 mm
• Inner Ring Width: 25 mm
• Overall Width: 59 mm