Stable Sealing for Large Servo Motor Applications

The DMHUI BC3555E SC Oil Seal (35×106×7mm) is designed for precision servo motor systems requiring reliable oil retention and smooth shaft operation. With a single-lip SC structure, this seal focuses on efficient lubrication sealing in controlled environments.

Its larger diameter design makes it suitable for specific servo motor assemblies and automated equipment where dimensional accuracy and stability are essential.

Key Points

SC Single Lip Structure
Designed for efficient oil sealing with reduced friction, making it suitable for high-speed rotating components in controlled environments.

Optimized for Large Servo Assemblies
The 35mm shaft size and 106mm outer diameter make it ideal for larger servo motor configurations and robotic systems.

Stable Oil Retention Performance
Helps maintain internal lubrication, supporting smooth operation of rotating shafts.

Durable NBR Rubber Material
Provides reliable resistance to oils and lubricants while maintaining flexibility during continuous operation.

Precision 35×106×7mm Fit
Manufactured to exact dimensions for proper installation and consistent sealing performance.

Product Info

Product Name: Automated Robotic Arms Oil Seal BC3555E
OEM Part Number: BC3555E
Seal Type: SC (Single Lip)
Material: Nitrile Rubber (NBR)
Dimensions:
Shaft (ID): 35mm
Bore (OD): 106mm
Width: 7mm
Primary Application: FANUC Servo Motor systems
Package Includes: 1 x SC Single Lip Oil Seal (OEM # BC3555E, Size 35mm x 106mm x 7mm)

For servo systems, maintaining proper lubrication with minimal friction is key to consistent performance. DMHUI SC oil seals are built to support these requirements.

Low-Friction Sealing Design
The single lip structure reduces drag on the shaft, making it suitable for high-speed applications.

Flexible NBR Sealing Edge
Maintains stable contact with the shaft, helping reduce wear during operation.

Accurate Dimensional Control
Ensures reliable fit in larger servo motor housings and assemblies.

Ideal For Use In
Servo Motors:
FANUC systems and large-frame servo assemblies
Robotic & Automation Equipment:
Industrial robotic arms, CNC machinery, automated production systems
Industrial Applications:
Rotating equipment operating in controlled environments

FAQ

Q: Is this seal compatible with my FANUC servo motor or robotic arm?
A: Yes, the BC3555E seal is designed as a direct replacement for specific FANUC servo motor models and automated robotic arms that call for a 35x106x7mm SC-type seal. Verify your original seal part number or measure your shaft (35mm), housing bore (106mm), and cavity width (7mm) to confirm.

Q: Why is the outer diameter so large (106mm) compared to the shaft (35mm)?
A: This dimensional configuration is specific to certain motor housings where the seal sits in a wide, shallow bore. It is not a standard off-the-shelf size but a custom-engineered profile for FANUC applications. Always match the exact OD to ensure a proper press-fit.

Q: How do I install this seal correctly without damaging it?
A: Clean the shaft and housing bore thoroughly. Lightly lubricate the seal lip with clean grease. Because the seal is wide (106mm OD) and very thin (7mm width), use a flat installation tool or a large-diameter socket that contacts the entire metal case perimeter. Apply even, firm pressure squarely to avoid distorting the thin casing. Never hammer directly on the rubber lip.

Q: What fluids is this seal compatible with?
A: The NBR material is compatible with most mineral-based greases and lubricating oils used in FANUC servo motors and robotic gearboxes. Avoid use with brake fluids, phosphate esters, or aggressive synthetic oils without confirming compatibility.

Q: Is this an original FANUC part?
A: No, this is a high-quality aftermarket replacement manufactured by DMHUI to match OEM BC3555E specifications for fit, material, and performance.

Note: This product is an aftermarket replacement component. Always verify the OEM part number and dimensions from your original seal or equipment manual prior to purchase. Due to the wide, thin profile, careful installation is essential to prevent casing distortion and ensure optimal sealing performance.

Trust in quality, choose DMHUI
DMHUI SC oil seals provide a practical and reliable solution for servo motor systems where stable lubrication and smooth rotation are essential.