Harmonic Gear 4B No.2 Grease 3HAC037302-001 is a specialized lubricant made in Japan, designed specifically for harmonic drive gearboxes in robots and automation equipment. It offers excellent heat resistance, anti-oxidation, and friction reduction properties, ensuring longer service life and precise operation of equipment.
1. Product Description
1.1 Introduction to Harmonic Gear 4B No.2 Grease 3HAC037302-001
Harmonic Gear 4B No.2 Grease 3HAC037302-001 is a lithium-based grease with NLGI grade 2 consistency, combined with synthetic additives. It is formulated with refined mineral oil and contains Organic Molybdenum Harmonic compound, designed to deliver optimal performance for precision lubrication points of gear reducers, bearings, and other critical components.

1.2 Key Features
- High durability with excellent resistance to oxidation and corrosion.
- Provides longer lubrication intervals and better performance compared to conventional greases.
1.3 Applications
Harmonic Gear 4B No.2 Grease 3HAC037302-001 is commonly used for robots from brands such as ABB, Yaskawa, Hyundai, Mitsubishi, and Kawasaki. Some popular robot models include:
- Yaskawa robots: HP20D, HP20RD, MA1400, MA1900, MA3100, MH50-20, MH6, SDA10D, MA1440, MA2010.
- ABB robots: IRB120, IRB1200, IRB360.
2. Technical Specifications of Harmonic Gear 4B No.2 Grease 3HAC037302-001
- Origin: Japan
- Product Code: 3HAC037302-001
- Weight: 2 kg
- Net weight: 0.6 kg
- Gross weight: 0.6 kg
- Depth / Length: 100 mm
- Height: 110 mm
- Width: 100 mm
- Color: Yellow
- Density (25°C): 0.87 g/cm³
- Dropping Point: 247 °C
- Flash Point: 191 °C
3. Usage Precautions
To ensure safe and effective use of Harmonic Gear 4B No.2 Grease 3HAC037302-001, please take note of the following:
- Store in a cool, dry place away from direct sunlight and out of reach of children.
- Do not mix with other lubricants or chemicals, as this can cause overheating, excessive friction, and potential damage to machine components.
- Always use protective gear such as gloves, masks, and safety clothing during handling.
- The grease may cause skin irritation or eye damage. In case of contact, wash immediately with water and seek medical attention if symptoms persist.
4. Benefits of Purchasing Spare Parts and Equipment at Robotnext
- Committed to providing genuine products, materials, and equipment for industrial robots and automation systems, meeting the quality and needs of businesses.
- A team of experienced staff and technicians determines our products.
- Customers can contact directly via Hotline 090 99 148 37 – 09 388 93 197 for the most accurate and detailed technical advice. As well as receiving incentives for the product.
- Shipping Policy: After receiving the order information, Robotnext’s staff will confirm and check the inventory of goods. Send a quote to the customer about the order value and accompanying shipping costs.
- Warranty policy due to technical errors and changes is clearly defined. See details here.
ROBOTNEXT is an authorized supplier of components, equipment, and replacement materials from major manufacturers such as Yaskawa, FANUC, ABB,… that have passed quality inspection. We specialize in providing products and services in industrial automation.
Read more: Spare Parts in robotic arms.
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