Industrial 5751 Oil Seal

Description:

The Timken National Oil Seal 5751 is a rotary shaft oil seal designed to retain lubricants and prevent contaminants from entering bearing housings and rotating equipment. Commonly installed in industrial gearboxes, pumps, agricultural machinery, heavy-duty axles, and power transmission systems where dependable sealing performance is essential. Maintenance teams, OEMs, and system integrators use this oil seal for equipment repairs, seal replacements, retrofit projects, and preventive maintenance to minimize lubricant leakage and extend equipment service life.

Applications:

The Timken National Oil Seal 5751 is engineered for rotary shaft sealing applications in industrial and mobile equipment operating under demanding conditions. It is widely used in gearboxes, wheel-end assemblies, pumps, conveyors, agricultural equipment, and other rotating machinery where effective lubricant retention and protection against dirt, moisture, and contaminants are required for reliable long-term operation.

Technical Specifications:

• Manufacturer Part Number (MPN): 5751
• Manufacturer: Timken (National)
• Product Type: Oil Seal
• Seal Type: Single Lip
• Series: 5000
• Cross Section: Type 34
• Shaft Diameter: 3.125 in (79.38 mm)
• Outside Diameter: 4.567 in (116.00 mm)
• Overall Width: 1.198 in (30.43 mm)
• Lip Material: Leather
• Lip Type: Single Lip Without Spring
• Temperature Rating: -50 to 200 °F (-46 to 93 °C)
• Construction: Solid
• Design Units: Inch (Imperial)
• Typical Applications: Industrial gearboxes, pumps, heavy-duty axles, agricultural equipment, power transmission systems

Common Replacements:

• National 5751
• SKF 5751
• CR 5751