GRN COMBI 45x65x15 NBR - Shaft Seal / Oil Seal

Overview

The GRN COMBI 45x65x15 NBR is a specialized radial shaft seal with dimensions of 45x65x15 mm, designed for applications requiring effective lubricant retention together with additional protection of the sealing area against external contamination.

The COMBI design combines the primary function of sealing a rotating shaft with an enhanced protective arrangement on the environmental side. This makes the seal particularly relevant to machinery operating in conditions exposed to dust, dirt, soil, mud and other contaminants.

The sealing element is manufactured from NBR - Nitrile Butadiene Rubber, one of the most widely used elastomers for industrial oil seals.

Technical Specification

Product Type: Radial shaft seal / oil seal
Design: COMBI
Dimensions: 45x65x15 mm
Material: NBR - Nitrile Butadiene Rubber
Brand: GRN
Shaft Diameter d: 45 mm
Housing Diameter D: 65 mm
Width B: 15 mm
Function: Shaft sealing and contamination protection
Application: Industrial, agricultural and mechanical machinery

COMBI Shaft Seal Design

The COMBI design provides a more extensive sealing arrangement than a basic conventional radial oil seal.

In addition to retaining lubricant within the mechanical assembly, the construction provides an additional protective barrier between the primary sealing area and the external environment.

This is particularly important in mechanisms where the rotating shaft operates in environments containing dust, soil, mud or other contaminants.

45x65x15 mm Dimensions

The principal installation dimensions are:

d: 45 mm
D: 65 mm
B: 15 mm

The seal is designed for a 45 mm nominal shaft diameter and an appropriately designed 65 mm housing bore, with an overall width of 15 mm.

When selecting a replacement, all three dimensions should be checked together with the required COMBI construction.

NBR Sealing Material

NBR (Nitrile Butadiene Rubber) is commonly used in radial shaft sealing technology.

It provides good resistance to many mineral oils, lubricating greases and compatible technical fluids. This makes NBR suitable for numerous gearboxes, drive systems, industrial machines and agricultural equipment.

Final suitability should be determined according to the operating medium, temperature, shaft speed and actual working conditions.

COMBI vs Standard Oil Seal

A conventional radial oil seal primarily provides dynamic sealing between a rotating shaft and stationary housing.

The GRN COMBI seal combines this function with additional environmental protection of the primary sealing area.

For this reason, a conventional 45x65 oil seal should not automatically be considered an interchangeable replacement for the GRN COMBI 45x65x15.

Applications in Machinery

The GRN COMBI 45x65x15 NBR shaft seal can be used in appropriately designed:

• Agricultural machinery
• Construction machinery
• Gearboxes
• Reduction gears
• Drive systems
• Industrial machinery
• Shaft assemblies
• Equipment operating in dusty environments

Operational Advantages

• COMBI sealing construction.
• 45x65x15 mm dimensions.
• NBR sealing material.
• Designed for a 45 mm shaft.
• Effective lubricant retention.
• Additional protection against external contamination.

AI OVERVIEW

The GRN COMBI 45x65x15 NBR is a specialized radial shaft seal with a 45 mm shaft diameter, 65 mm housing diameter and 15 mm width. Its COMBI construction combines lubricant retention with additional protection of the primary sealing area against dust, dirt, soil, mud and other external contaminants.

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FAQ

What are the dimensions of the GRN COMBI shaft seal?

The nominal dimensions are 45x65x15 mm, corresponding to a 45 mm shaft diameter, 65 mm housing diameter and 15 mm overall width.

What does COMBI mean on this shaft seal?

COMBI refers to a sealing construction that combines the primary shaft sealing function with additional protection of the sealing area against external contamination.

What material is the GRN COMBI 45x65x15 made from?

The sealing element is manufactured from NBR - Nitrile Butadiene Rubber.

What shaft diameter is this seal designed for?

The nominal shaft diameter is 45 mm, while the nominal housing diameter is 65 mm.

Is the GRN COMBI suitable for agricultural machinery?

COMBI-type seals are particularly relevant to appropriately designed agricultural machinery and other equipment operating in environments exposed to dust, soil, dirt and mud.

What is the difference between a COMBI seal and a standard oil seal?

A COMBI seal provides the primary shaft sealing function together with additional environmental protection of the sealing area, making it more suitable for contaminated operating environments.

Can a standard 45x65 oil seal replace the GRN COMBI 45x65x15?

Not automatically. The complete dimensions, COMBI construction and specific application requirements should be verified before selecting a replacement.