Excavators are also called diggers, scoopers, mechanical shovels, or 360-degree excavators (sometimes abbreviated simply to "360"). Tracked excavators are sometimes called "trackhoes" by analogy to the backhoe. In the UK, wheeled excavators are sometimes known as "rubber ducks". OverviewExcavators are primarily consisting of a , dipper (or stick), , and cab on a rotating platform known as the "house". The modern excavator's house sits atop an undercarria. .
Modern hydraulic excavators come in a wide variety of sizes. The smaller ones are called mini or . For example, smallest mini-excavator weighs 2,060 pounds (930 kg) and has 13. [pdf]
A drifter drill, sometimes called a rock drill, is a tool used in mining and civil engineering to drill into rock. Rock drills are used for making holes for placing dynamite or other explosives in rock blasting, and holes for plug and feather quarrying. While a rock drill may be as simple as a specialized form of chisel, it may also take the form of a powered machine. The mechanism may be worke. History and typesThe simplest form of rock drill consists of a long chisel or drill steel that was struck with a . , who worked unsuccessfully as a silver miner in the early 1860s before taking up journalism, described t. .
In reciprocating power drills, the drilling cylinder is mounted on a feed-screw, such that as the hole is drilled and the drilling point recedes from the rock face, the drill-bit continues to move into it, while the anchor point (on th. [pdf]
This article lists the main components of a onshore . rigs have similar elements, but are configured with a number of different drilling systems to suit drilling in the marine environment. The equipment associated with a rig is to some extent dependent on the type of rig but typically includes at least some of the items listed below. [pdf]
When changing your air compressor’s oil, follow the instructions in your manual. Although the basics of an oil change are simple—drain the old oil and then pour in new oil—the individual steps can be significantly more detailed. As an example, here are the steps required to change the oil in VMAC’s G30 gas. .
Air compressor oil is standard or synthetic oil made specifically for air compressors. Unlike motor oil, air compressor oil does not contain detergent. .
Air compressor oil plays several vital roles within a rotary screw air compressor system: 1. Lubricates moving parts 2. Creates a seal. .
Maintaining proper service intervals will keep your air compressor running in optimal condition and help maintain the warranty. You should always check and follow your air. .
Some air compressors require a particular type of oil, while others may not be as specific. Before deciding on a type of oil for your rotary screw air. [pdf]
Whether you are building a fence or putting up a flagpole or a bird house on a pole, you may find the need to dig a small diameter hole. Using a shovel for this job means making your hole larger than you need, so you may choose to use post hole diggers for the job instead. Here is how it is done. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a screwed on the bottom of a . The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or ). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuic. [pdf]
[FAQS about Can down-the-hole drills produce vortex spray holes video ]
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