SKF 54949

The SKF 54949 is a widely used radial shaft seal, also commonly referred to as an oil seal. It's designed to prevent lubricants from escaping and to keep contaminants like dirt and water from entering machinery, thus protecting internal components.

Product Details

The SKF 54949 is a double-lip oil seal with a metal case. It features a main sealing lip and an auxiliary contacting lip, which provides enhanced protection against dust and other external contaminants. The sealing lip is typically made from Nitrile Rubber (NBR), a versatile material known for its good resistance to oils, greases, and many chemicals, as well as its excellent temperature range. The metal casing, usually made of steel, provides structural integrity and allows for a secure press fit into the housing.

Product Parameters

Here are the key specifications for the SKF 54949:

• Shaft Diameter (d1): 139.7 mm (5.5 inches)

• Housing Bore Diameter (D): 168.3 mm (6.626 inches)

• Seal Width (b): 14.3 mm (0.563 inches)

• Design Type: CRSHA1 (This is an SKF internal design code indicating a specific configuration of the seal)

• Number of Lips: 2 (Main sealing lip and auxiliary dust lip)

• Lip Material: Nitrile Rubber (NBR)

• Outside Diameter Type: Metal-cased

• Operating Temperature Range: -40 °C to 100 °C (-40 °F to 210 °F)

• Limiting Rotational Speed: Up to 1,641 r/min

• Permissible Circumferential Speed: Up to 12 m/s

• Pressure Tolerance: Up to 10 psi (0.07 N/mm²)

• Construction Description: Oil seal with garter spring (for consistent sealing lip contact)

Product Advantages

• Effective Sealing: The double-lip design offers superior protection against both lubricant leakage and external contamination, extending the life of components.

• Durable Construction: The metal case provides robust support and ensures a secure fit, while the NBR material offers good wear resistance and chemical compatibility.

• Wide Temperature Range: Suitable for a broad range of operating temperatures, making it versatile for various industrial applications.

• Reliability: As an SKF product, the 54949 benefits from SKF's extensive expertise in seal design and manufacturing, ensuring high quality and consistent performance.

• Ease of Installation: Designed for a straightforward press-fit installation into a housing.