The TCK Oil Seal 40x52x7 SC NBR is designed for industrial rotary shaft applications requiring lubricant retention around a 40 mm shaft within a 52 mm housing bore.

Installed between the rotating shaft and stationary housing, the primary sealing lip maintains controlled radial contact with the shaft surface. A garter spring commonly applies consistent pressure to the main lip, helping reduce leakage of compatible lubricants during shaft rotation.

The SC Profile is generally recognized as a compact single-lip rotary shaft seal without a separate auxiliary dust lip. However, the exact TCK cross-section, lip geometry, spring arrangement, case reinforcement, elastomer coverage, and installation direction should be checked against the actual seal, technical drawing, or original equipment specification.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing element is generally suitable for:

• Mineral oils
• Gear oils
• Hydraulic oils
• Bearing grease
• Petroleum-based lubricants
• General industrial lubricating fluids

NBR provides good resistance to petroleum-based oils, grease, abrasion, and mechanical wear under normal industrial operating conditions. Compatibility should be verified before use with aggressive chemicals, fuels, ozone-rich environments, specialized synthetic lubricants, or continuous high-temperature service.

The dimensions are:

Shaft diameter: 40 mm

Housing diameter: 52 mm

Seal width: 7 mm

The 40 × 52 × 7 mm size is commonly suitable for compact bearing housings, electric motors, gearboxes, pumps, transmissions, and general industrial rotating assemblies.

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Electric motors
• Industrial pumps
• Mechanical transmissions
• Agricultural machinery
• Construction equipment
• Conveyor drive assemblies
• General rotating machinery
• OEM industrial equipment

🎯 Benefits

✔ Helps retain compatible oil or grease

✔ Compact single-lip sealing arrangement

✔ Spring-loaded primary sealing lip

✔ Oil-resistant NBR material

✔ Suitable for 40 mm shaft assemblies

✔ Good resistance to abrasion and wear

✔ Suitable for maintenance and overhaul work

✔ Standard metric installation dimensions

✔ Replacement ready when dimensions and profile match

🧠 Technical Insight

• TCK SC Seal Reference
• Metric Rotary Shaft Seal
• Single Primary Sealing Lip
• Garter-Spring Lip Loading
• NBR Sealing Material
• Normally No Auxiliary Dust Lip
• 40 mm Shaft Diameter
• Exact TCK SC Construction Should Be Verified

✅ Key Features

• TCK Industrial Quality
• SC Profile Reference
• Single-Lip Design
• Oil-Resistant NBR Material
• Spring-Loaded Main Lip
• Metric 40x52x7 Dimensions
• Industrial Replacement Seal
• Cross-Reference Support Available

📊 Specifications

Brand: TCK

Model / Profile: SC

Size: 40 × 52 × 7 mm

Type: Single-Lip Industrial Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: SC

Construction: Elastomer Sealing Element with Internal Metal Reinforcement; verify actual TCK construction

Lip Design: Commonly one primary radial sealing lip

Dust Lip: Normally not included in the SC profile

Spring Type: Commonly a garter spring on the primary sealing lip

Shaft Diameter (ID): 40 mm

Housing Diameter (OD): 52 mm

Width: 7 mm

Pressure Capability: Low-pressure rotary shaft-sealing service unless otherwise specified

Lubrication: Compatible oil and grease

Temperature Range: Typically approximately -30°C to +100°C for standard NBR; verify the actual compound, lubricant, shaft speed, and operating conditions

Speed Consideration: Permissible speed depends on shaft diameter, surface finish, lubrication, temperature, alignment, runout, and NBR compound

Application Class: General Industrial Bearing and Rotating Equipment

Standard: Metric Rotary Shaft Seal

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• TCK 40x52x7 SC Oil Seal
• 40x52x7 NBR Oil Seal
• 40 mm Shaft Rotary Seal
• SC Single-Lip Oil Seal
• Metric NBR Shaft Seal
• Industrial Bearing Housing Seal
• Electric Motor Shaft Seal
• Industrial Gearbox Oil Seal
• Industrial Pump Shaft Seal
• OEM 40x52x7 Rotary Seal

The same dimensions alone do not guarantee interchangeability. The replacement must match the original SC profile, primary-lip geometry, spring arrangement, outside construction, elastomer compound, sealing direction, installation depth, and operating requirements.

(Always verify dimensions, SC-profile construction, lip direction, shaft finish, housing condition, lubricant compatibility, rotational speed, temperature, runout, pressure, and installation depth before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, electric-motor repair, industrial pump servicing, transmission maintenance, agricultural-machinery repair, construction-equipment maintenance, and compatible OEM replacement applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification