The CR Oil Seal 4.938x6.256x0.500 CRWH1 NBR (Part No. CR-49301) is a high-performance industrial rotary shaft seal developed using SKF's proven sealing technology for demanding industrial applications.

The CRWH1 Profile belongs to SKF's advanced Wave Lip seal family. Unlike conventional oil seals, the Wave Lip geometry creates a hydrodynamic pumping action that actively returns lubricant toward the oil side of the seal. This helps reduce lubricant loss, improve sealing effectiveness, and minimize frictional heat generation during operation.

The seal utilizes a double steel case construction, providing superior rigidity, accurate housing fit, and excellent dimensional stability under heavy-duty operating conditions. The integrated carbon steel garter spring maintains constant radial sealing force against the shaft surface throughout the seal's service life.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing lip offers excellent resistance to lubricating oils, hydraulic fluids, gear oils, grease, and petroleum-based lubricants. NBR remains the industry's preferred sealing material for general industrial applications due to its durability, wear resistance, flexibility, and cost-effective performance.

The SKF Wave Lip design has been shown to reduce friction and operating temperature while improving lubricant retention compared to conventional sealing lip designs, making it ideal for equipment operating continuously under heavy industrial loads.

With dimensions of 4.938 x 6.256 x 0.500 inch, this seal is commonly installed in industrial gearboxes, pumps, speed reducers, electric motors, mining equipment, conveyor systems, and heavy-duty rotating machinery.

⚙️ Applications

• Industrial gearboxes
• Industrial pumps
• Electric motors
• Speed reducers
• Mining equipment
• Conveyor systems
• Agricultural machinery
• Construction equipment
• Power transmission systems
• OEM industrial machinery

🎯 Benefits

✔ SKF Wave Lip technology

✔ Superior oil retention performance

✔ Reduced friction and heat generation

✔ Extended bearing and shaft life

✔ Excellent contamination protection

✔ Lower maintenance costs

✔ Reduced machine downtime

✔ Improved equipment reliability

✔ Long service life under continuous operation

🧠 Technical Insight

• CRWH1 = Double Steel Case + SKF Wave Lip Design
• Hydrodynamic sealing lip pumps lubricant inward
• Up to lower friction compared to conventional lip seals
• Reduced operating temperature during continuous operation
• Double steel case improves rigidity and bore retention
• Carbon steel garter spring maintains constant sealing force
• Suitable for oil and grease lubrication systems
• Designed for severe industrial operating environments

✅ Key Features

• CR Seals by SKF
• CRWH1 Wave Lip Technology
• Double Steel Case Construction
• Premium NBR Material
• Reduced Heat Generation
• Low Friction Design
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: CR Seals (SKF)

Part Number: CR-49301

Model: CRWH1

Size: 4.938 x 6.256 x 0.500 inch

Type: Wave Lip Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Case Design: Double Steel Case

Lip Design: SKF Wave Lip

Spring Type: Carbon Steel Garter Spring

Shaft Diameter (ID): 4.938 inch

Housing Diameter (OD): 6.256 inch

Width: 0.500 inch

Lubrication: Oil & Grease

Application Class: Heavy Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF CRWH1 Oil Seal
• SKF Wave Lip Seal
• Chicago Rawhide CRWH1 Seal
• National Industrial Seal
• CFW Rotary Shaft Seal
• KACO Industrial Oil Seal
• DICHTOMATIK Rotary Seal
• TRELLEBORG Industrial Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

📦 MOQ: 1 Piece

📲 Contact via LINE ID: dusitrea

🏭 Suitable for industrial maintenance, gearbox overhaul, pump repair, and OEM replacement applications