Line Boring Machines And Their Attributes

Line boring has always been the process where no half measures are taken as there are no second chances at all. Companies engaged in this process are well-aware of this fact and this is why you’ll find them doing no compromise whatsoever upon the tools used for this process. They always use the most updated and technically advanced machines to make sure that whatever they are doing is completed with sheer precision and on time.

Some features of the machines used by them for line boring process are being discussed below.

• The machines are often seen capable of creating a bore even in very heavy duty equipments such as excavators, loaders, cranes, etc.

• One more very remarkable feature of these equipments are that often they put no pressure as such on the overall budget or revenue that they expect to earn from their business.

• They are often very portable, but despite this, they offer sheer power, flexibility, ease of use and lastly, ease of maintenance.

• In most cases, you’ll find them being sold in two form, if they are a portable one. They are – the pneumatic driven and the hydraulic driven.

Other than general line boring, these machines can be helpful engineers in a number of other ways too. Let us try and know how they can help them simplify their tasks.

• It can be brought into use to measure the bores and for this, they bring into use calibrated internal and external micrometers.

• The size may range from 50-2000 millimeters in diameters.

• They can even help these professionals in re-boring of holes in earthmoving equipments and attachments like excavators, backhoe loaders and end loaders.

• They even help in repair works of machines such as backhoe and track hoe buckets, articulating joints, wheel loader arm pin-holes and hinge points in tilt bed trailers. 

Features To Look For In a Line Boring Machine

Line boring is a very convoluted thing and therefore, the staff takes no chance at all and simply relies upon the best machines. The best machines are determined on the basis of various factors and the most crucial of them all is the boring diameter.

According to the experts, a machine can be called an ideal, if it is capable of supporting boring diameters from 1.375 to 80 inches (35 to 2030 mm approx). Other factors that are determined at the time of selection of the machine are –

• The speed of the machine

• How precisely it is generating the results

Apart from these, some features are also looked for like specially designed mounting brackets, spherical bearings, self-centering set-up cones, and movable rotational drive and feed units. They are expected to be there in the machine, as they all simplify the set-up and allow the machine to work in conditions too tight for different machines used in this task. Moreover, the basic as well as highly advanced models should equally feature –

• Rugged Rotational Drive

• Axial Feed Systems

• Precision Bars

• Heavy Duty Bearings

• Electric, Pneumatic And Hydraulic Options

All of them should have the ability to work on the same mounting system with Auto Bore Welding Systems for single-setup machining and welding. Based on the features discussed above, we have got three different line boring machines that are unarguably the best. Let us know some more facts and figures about them.

BB3000 LINE BORING MACHINE

• Bar Diameters – 1.25 inches (31.8mm)

• Boring Diameters – 1.5-5 inches (38.1-127mm)

• Max. Stroke – 10 inches (254 mm)

• Torque at Bar – 40 ft-lb (54.2 N m)

• Power Options – Electric

BB4500 LINE BORING MACHINE

• Bar Diameters – 1.75 inches (44.5 mm), 1.25 inches (31.8 mm) optional

• Boring Diameters – 1.5 – 10 inches (38.1 – 254 mm)

• Max. Stroke – 24 inches (609.6 mm)

• Torque at Bar – 417 ft-lb (hydraulic) (565.4 N m)

• Power Options – Electric, Pneumatic, Hydraulic

BB5000 LINE BORING MACHINE

• Bar Diameters – 2.25 inches (57.2 mm), 1.25 inches (31.8 mm) optional

• Boring Diameters – 1.5 – 24 inches (38.1 – 609.6 mm)

• Max. Stroke – 36 inches (914.4 mm)

• Torque at Bar – 40 ft-lb (54.2 N m)

Uses and Benefits of Advanced Line Boring Machines

The task of line boring could not be possible without advanced machines designed to complete the task faster and with utmost precision. Their modus operandi allows them to cut the inside of any bore to enlarge its diameter to the preset size.

Another attribute is that they are developed to work in the shortest time possible and with utmost precision.

Some other features of a line boring machine used by the experts are discussed below.

• This machine is capable of creating the bore even the heavy-duty equipments such as cranes, end loaders, etc.
• It is very economical equipment used by the experts to meet the varying demands of their clients.
• This machine in its portable version is even more economical, flexible, powerful, and easy to use.
• The portable version is available in two forms, i.e. the pneumatic drive and hydraulic version.
• Apart from boring, it can be used for various other operations as well. For example –
• Measuring the bores using calibrated internal or external micrometers. Its size ranges from 50 mm to 2000 mm in diameter.
• For re-boring of holes on dozers, backhoes, and end loaders.
• In repair works to areas such as backhoe and track hoe buckets, articulating joints, wheel loader arm pin-holes and hinge points in tilt bed trailers, and steering axle sleeves in heavy duty fork trucks.
• One more attribute is that field machining repairs can be made on site and in-place.
• With modern-day machines, users would require a minimum amount of dismantling.
• Similarly, users would experience that unbolting leaks and down time are minimized, and productivity is increased with line boring machine.

The Process of Giving Birth to Reconditioned Crankshafts

Many people get reconditioned crankshafts in their vehicles but have no idea of what is actually involved in the process. To help them out and to make them aware of the entire process, here is the post. The very first process is given the name of grinding.

Crankshaft grinding

•    In the process, this machine is actually precisely machined to the first available undersized.
•    The reason behind doing this is ensuring that exact tolerances are achieved every time, this process is repeated.
•    Secondly, in the process of grinding, oil holes are chamfered with the goal of improving lubrication to the journal surface before it is passed to another process called MICRO-POLISHING.
•    To ensure that reconditioned crankshaft is in its best possible condition, the oil gallery areas are thoroughly cleaned.
•    Each and every contaminant prevailing there is removed to make it easy for the QC and assembly team.

The process of micro-polishing
•    Once the first phase of bringing reconditioned crankshafts is completed and it has been cleaned by hot tanking, it is sent for micro-polishing.
•    The team ensures that all industry norms, laws, regulations, and standards are followed as they go through the process.
•    This is very important because according to the experts, only a well-polished piece would help in removing all other imperfections prevailing in the journal.

Reconditioned Crankshafts

The step of crankshaft welding

•    If the crankshaft faces any kind of damage in the process of grinding, polishing or any other; the experts have to bring this process into an application. In this process, they weld it back to the exact size so that the process of grinding can be resumed.
•    In most cases, it is found that this service is required when the engine has been used for a long time without the oil or the oil ran dry.

Oil hole chamfering

The last phase of the process of preparing reconditioned crankshafts includes oil holes chamfering.

This is done with two goals in mind and the one is eliminating sharp edges. The second goal is to ensure that the oil is distributed evenly on the crankshaft journals.