What's the difference between drill bit and drill rig lubricants

Drill lubricant (or cutting fluid, coolant)

Main function:
Cooling: The drill bit generates a lot of heat during high-speed rotation and cutting, and the main function of the lubricating fluid is to take away this heat and prevent the drill bit from overheating and wearing out or even being damaged.
Lubrication: Reduce the friction between the drill and the workpiece, reduce the cutting force, and improve the machining precision and surface finish.
Chip removal: Remove the chips generated during the cutting process to prevent clogging and secondary cutting.
Anti-corrosion: Protect the workpiece and drill bit from rusting.
Type:
Water-based cutting fluid: water as the main ingredient, add lubricants, rust inhibitors and other additives, cooling effect is good, the cost is low, but the lubricity and rust resistance is relatively poor.
Oil-based cutting fluid: mineral oil or synthetic oil as the main component, good lubrication and rust resistance, but the cooling effect is relatively poor, high cost.
Usage Scenario: Mainly used in metal cutting processing, such as drilling, turning, milling and so on.

Drilling machine lubricating fluid (or lubricating oil, grease)
Main function:
Lubrication: Reduce the friction between the internal moving parts of the drilling rig (such as bearings, gears, hydraulic system, etc.), reduce wear and prolong the life of the equipment.
Sealing: Prevent dust, water and other impurities from entering the moving parts, keep them clean.
Cooling: Carry away some of the heat generated by friction.
Anti-corrosion: Protects metal parts from rusting.
Type:
Lubricating oil: better fluidity, suitable for high-speed moving parts, such as engines, gearboxes and so on.
Grease: Higher consistency, suitable for low-speed movement or parts that are not easy to fill with lubricant, such as bearings, slide rails, etc.
Usage Scenario: Used in all kinds of mechanical equipment, including drilling rigs, engines, gearboxes, hydraulic systems, and so on.

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