Description

INGCO S-CS-BG-CS2351, Saw Big Gear(S-CS-BG-CS2351)

product details:

In a circular saw, the “big gear” typically refers to the arbor gear. It’s the larger of the two main gears within the saw’s gear reduction system, responsible for transferring the motor’s high-speed rotation into a slower but more powerful rotation of the circular saw blade. Here’s a detailed breakdown of its function, components, and importance:

Function:

The arbor gear works in conjunction with a smaller pinion gear mounted on the motor shaft. The pinion gear acts as the driver, receiving the rapid spins from the motor. Here’s how the gear reduction system works:

1. Motor Rotation: The electric motor spins at a high RPM (revolutions per minute).
2. Pinion Gear: The pinion gear, with its smaller diameter and fewer teeth, receives this high-speed rotation from the motor shaft.
3. Gear Ratio: The arbor gear has a significantly larger diameter and more teeth compared to the pinion gear. This creates a gear ratio. As the smaller pinion gear rotates the larger arbor gear, the rotational speed is reduced, but the torque (turning force) is multiplied.
4. Blade Attachment: The arbor gear is connected to the saw arbor, the shaft that holds the circular saw blade.

Components:

• Gear Teeth: The arbor gear has a ring-shaped design with gear teeth machined around its outer circumference. These teeth mesh with the teeth of the pinion gear.
• Arbor Shaft Connection: The center of the arbor gear is typically integrated with or securely attached to the saw arbor. This connection ensures the rotation of the gear translates to the saw blade.
• Material: Arbor gears are typically made from high-strength steel to withstand the significant torque and stress they experience during saw operation.

Importance of the Big Gear:

The arbor gear plays a vital role in a circular saw’s functionality by:

• Reducing Speed, Increasing Torque: By reducing the motor’s high RPM through the gear ratio, the arbor gear allows the circular saw blade to rotate at a slower, more manageable speed suitable for cutting through various materials. However, the gear ratio also multiplies the torque, providing the necessary power for the blade to make clean and efficient cuts.
• Durability: The robust construction of the arbor gear helps it handle the demanding task of transferring power from the motor to the blade while enduring the wear and tear of sawing operations.