ZQ 850 Gearbox (Size 850) – Output Shaft 130mm | Load Capacity 50 Tons

ZQ 850 Gearbox (JZQ 850) is a heavy-duty mechanical transmission device designed according to the JB/T 8853-2001 standard. The gearbox is a perfect replacement solution for older drive systems in cement and metallurgy plants thanks to its exceptional shock load capacity and high fatigue strength.

Overview design of the ZQ 850 Gearbox

The ZQ gearbox is a large-capacity helical gear reducer line, specialized for heavy-duty systems such as overhead cranes, gantry cranes, and winches. The design consists of 2 reduction stages, a total center distance of 850 mm, a one-piece cast iron housing, and high-strength hardened steel gears.

Structure of ZQ 850 Heavy-Duty Gearbox

• Housing: Cast from high thickness and hardness iron, helping to protect internal parts, resist vibration, and serve as a fixed base for the equipment. The housing often has a split-half design for easy disassembly and maintenance.
• Gear system: Consists of helical gear pairs (chevron or spiral teeth) made of high-durability refined alloy steel. They mesh together at a specific gear ratio to reduce speed and increase torque.
• Drive shaft system:
  • Input shaft: Receives high-speed rotational motion from the electric motor.
  • Intermediate shaft: Transfers force through the 1-stage gear system.
  • Output shaft: Transmits force at a reduced speed and maximum torque to heavy-duty equipment such as conveyor belts, bucket elevators, or winches.
• Bearings and lubrication system: The gearbox uses heavy-duty industrial bearings working in an oil-immersed environment, helping the shafts rotate smoothly, reducing friction and heat generation.
• Oil seals: Prevent lubricating oil leaks to the outside and protect the gearbox from dust and water from harsh working environments.

Specifications of ZQ 850 Gearbox

The ZQ 850 gearbox is designed for heavy-duty transmission systems, requiring large torque and stable long-term operation. Below are the main technical specifications of the product.

Practical applications of ZQ 850 Gearbox

• Lifting equipment: Integrated into the cable winding mechanism of overhead cranes, gantry cranes, and hoists to lift oversized and heavyweight goods in workshops or at seaports.
• Mineral mining & Building materials: Used to operate large-capacity stone and ore conveyor systems, or transmit drive for ball mills, brick press machines, and cement grinders.
• Heavy industry: Supports controlling heavy material mixing equipment, steel rolling, and production lines requiring extremely large pulling force (torque) but slow output rotation.

The ZQ 850 Gearbox is a suitable choice for heavy-duty transmission systems requiring high torque, high durability, and continuous working capability. If you need to learn more about the structure, operating principle, and other gearbox lines, you can refer to the gearbox videos and summary videos produced by Thanh Thai Motor to get more information before choosing the right product.

Warranty, Shipping, and Commitment Policy at Thanh Thai Motor

When purchasing gearboxes at Thanh Thai Motor, you will receive benefits such as:

Warranty up to 24 months

Gearbox products at Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers can be completely confident in using them with a clear, transparent, and prompt after-sales policy.

Nationwide Delivery

We support fast delivery to all provinces and cities nationwide. Wherever you are, products are guaranteed to arrive on time and safely.

Products meeting European quality standards with German technology

Gearboxes at Thanh Thai Motor are manufactured using advanced German technology, meeting European quality standards. Ensuring high durability and stable operation for extended periods.

Competitive prices, good discounts for dealers and bulk customers

Reasonable prices, many attractive offers for wholesale buyers and distribution agents. The more you buy, the higher the discount – optimizing profits for customers.

Full certification documents: CO, CQ,...

Each product comes with full Certificate of Origin (CO) and Certificate of Quality (CQ). This provides assurance for customers when using them in projects or constructions requiring technical documentation.

Contact for Purchase

Do you need advice on choosing the right gearbox for your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com