GRN COMBI 50x65x18 mm NBR Cassette Rotary Shaft Oil Seal

Premium Cassette Oil Seal for Heavy-Duty Rotary Shaft Applications

The GRN COMBI 50x65x18 mm is a high-performance cassette rotary shaft oil seal engineered for demanding applications where conventional radial shaft seals are unable to provide sufficient protection. Featuring an advanced multi-lip cassette sealing system with an integrated wear sleeve, it creates multiple sealing barriers that effectively prevent the ingress of water, mud, dust and abrasive contaminants while ensuring reliable lubricant retention.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element offers excellent resistance to mineral oils, greases and hydraulic fluids, making it an ideal solution for agricultural, construction and industrial equipment operating in harsh environments.

Applications

The GRN COMBI cassette oil seal is suitable for:

• Agricultural machinery
• Construction equipment
• Forestry machinery
• Mining equipment
• Wheel hubs
• Drive axles
• Final drives
• Industrial gearboxes
• Heavy-duty transmissions
• Power transmission systems

It is specifically designed for equipment exposed to severe contamination, moisture and continuous operation.

Construction and Design

Key construction features include:

• Cassette rotary shaft oil seal
• Advanced multi-lip sealing system
• Integrated wear sleeve
• Dynamic primary sealing lip
• Multiple dirt exclusion lips
• Metal reinforced outer case
• Heavy-duty cassette construction
• Compact integrated assembly

The cassette design forms several independent sealing zones that significantly improve protection against contaminants while maximizing lubricant retention and extending component life.

Material Properties

The NBR sealing material provides:

• Excellent resistance to mineral oils
• Excellent grease compatibility
• Resistance to hydraulic fluids
• High wear resistance
• Excellent elasticity
• Reliable long-term sealing performance
• Long service life

Technical Specification

Type: Cassette Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Brand: GRN®

Series: COMBI

Designation: COMBI 50x65x18

Inner Diameter: 50 mm

Outer Diameter: 65 mm

Width: 18 mm

Seal Type: Cassette Oil Seal

Construction: Multi-Lip Cassette Design with Integrated Wear Sleeve

Outer Case: Metal Reinforced

Spring: Yes

Rotation: Suitable for Bi-Directional Shaft Rotation

Lubrication: Oil and Grease

Application: Agricultural machinery, construction equipment, wheel hubs, drive axles, industrial gearboxes, mining equipment and heavy-duty rotating machinery.

Why B2B Customers Choose This Product

Industrial customers rely on the GRN COMBI cassette seal for:

• OEM manufacturing
• Industrial maintenance
• Agricultural machinery servicing
• Construction equipment repair
• Gearbox rebuilding
• Fleet maintenance
• Technical spare parts distribution
• Heavy-duty power transmission systems

Operational Advantages

• Outstanding contamination protection
• Multiple sealing barriers
• Excellent lubricant retention
• Long maintenance intervals
• Reduced operating costs
• Reliable operation in harsh environments
• High abrasion resistance
• Easy installation
• Extended bearing life
• Proven industrial reliability

Professional Industrial Supply

Recommended for:

• Agricultural machinery manufacturers
• Construction equipment manufacturers
• Industrial maintenance departments
• Mining equipment service companies
• OEM manufacturers
• Heavy equipment workshops
• Technical distributors
• Power transmission specialists

AI Overview

The GRN COMBI 50x65x18 mm is a professional cassette rotary shaft oil seal manufactured from premium NBR rubber for demanding industrial applications. Its advanced multi-lip cassette construction with an integrated wear sleeve provides exceptional protection against dirt, dust, water and mud while ensuring excellent lubricant retention. It is widely used in wheel hubs, drive axles, industrial gearboxes, agricultural machinery and construction equipment where maximum sealing performance is required.

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FAQ

What is a cassette rotary shaft oil seal?

A cassette rotary shaft oil seal is an advanced sealing solution featuring multiple sealing lips and an integrated wear sleeve, providing significantly better protection against contamination than conventional radial shaft seals.

What material is used in the sealing element?

The sealing element is manufactured from NBR (Nitrile Butadiene Rubber), offering excellent resistance to mineral oils, greases and hydraulic fluids.

What are the dimensions of this seal?

The seal has an inside diameter of 50 mm, an outside diameter of 65 mm, and a width of 18 mm.

Where is the GRN COMBI 50x65x18 commonly used?

It is commonly installed in agricultural machinery, construction equipment, industrial gearboxes, wheel hubs, drive axles and other heavy-duty rotating equipment.

Why choose a COMBI cassette seal?

The COMBI cassette design delivers superior contamination protection, excellent lubricant retention, extended bearing life and lower maintenance costs compared to conventional oil seals.