Band sawmill cedar: description, cost, technical parameters.

The production group of companies "Kedr" was founded in 1995 in order to produce a highly efficient set of tools that allows solving the tasks of processing various types of wood at a high quality level. Today, the company manufactures a wide range of equipment, which includes band sawmills, circular sawmills, sawmills, edge trimmers, grinders, and other woodworking machines. Sawmills are electric, gasoline and diesel.

Band sawmill cedar

The model range of the company includes 18 sawmills, but their main differences are in the type and power of the power units. There are no cardinal differences in the designs of the entire model range.

Such a device is suitable for cutting timber, the length of which is from 0.5 to 6.5 meters. Band sawmill Kedr is equipped with a built-in electric motor with a power of 7.5 kW. It guarantees the smooth operation of the equipment.

This sawmill is very durable. It can operate in two-shift, and even in three-shift mode at the highest level of load. In addition, the sawmill has a high productivity: for eight hours it produces 5-10 cubic meters of finished lumber.

In favor of versatility is the fact that the device easily copes with the processing of workpieces with a cross section of up to 110 millimeters. The sawmill was created specifically, taking into account the harsh climatic conditions in certain regions of Russia.

A huge advantage is the high ergonomics of this model. The weight of the device is 280 kilograms, so it is easy to transport as needed, and small dimensions guarantee the most efficient distribution of the workplace.

Band sawmill Kedr 2

The design of this model is designed in such a way as to obtain the maximum level of performance. With the help of an electromechanical lift, the height of the saw in relation to the workpiece is adjusted by simply pressing the buttons on the control panel. A reliable gearbox with a large gear ratio reserve makes it possible to quickly and accurately position the saw carriage. This has a positive effect on the speed of personnel actions, and, as a result, leads to an increase in productivity. In order to obtain jewelry precision material, this model can be additionally equipped with a digital ruler - a laser rangefinder that controls high level accuracy of operations.

Sawmill Kedr 2 has:

• reliable and moisture-proof electrical package
• very economical three-phase power unit consuming 11 kW
• large-diameter cast discs prevent sharp bending of the saw blade, protect the blade from wear and prolong the period of operation.

All this allows the sawmill with high speed and no less high efficiency to realize sawing of blanks of hardwood with a cross section of up to 1000 mm and a length of not more than 6.5 m. The device produces a minimum amount of sawdust and waste. it can work even in frosty winter conditions.

Like other models of band sawmills, Kedr-2 has a certificate customs union and factory warranty. The company produces equipment that is designed for a long and reliable service.

Circular sawmills of the Kedr brand are no less popular than band sawmills. By purchasing such a machine, you will receive high quality end materials and a wide range of lumber produced. On a circular sawmill, you can make the following lumber:

• bars
• sleeper
• edged and unedged board
• slats.

All products have excellent geometric indicators. The allowances along the entire length of the blanks are not higher than 0.5 mm, and due to the peculiarities of the saw blades, the edges of the sawn timber come out even with a smooth surface. There is no "wave" effect.

The performance of such a device allows for 8 hours to dissolve from 8 to 10 cubic meters of timber.
Rotary models significantly save working time due to the absence of the need to tilt logs. The rotary mechanism, gives the chance to carry out a cut both in a horizontal, and in a vertical plane.

The saw itself is made from high-strength ductile steel. It has cobalt, carbide and tungsten carbide teeth. Discs are characterized by resistance to abrasion, they do not need frequent sharpening or replacement. These discs guarantee the smooth functioning of the machines throughout the entire shift.

Due to the described design features circular sawmills, the acquisition of such devices is very effective at woodworking, sawmilling enterprises in different regions of the country.

Circular sawmills Kedr effectively operate in a wide temperature range from + 50 to - 25 degrees. They can be both outdoors and indoors. The machine can dissolve logs that have not undergone preliminary preparation - clogged with dirt, knotty. Such a sawmill will easily cut wood of hard deciduous and coniferous resinous varieties.

Another advantage of the sawmill can be called mobility. Compact design that can be easily disassembled and is small in size and easy to transport. A circular sawmill can be brought to the place of work in an open Gazelle-type vehicle. It is possible to assemble and install the equipment in a minimum time.

Comparison

When choosing a sawmill, its characteristics are often compared with band sawmills. And the price of a disk device plays an important role here. It is worth noting that a band sawmill is much cheaper than a sawmill. However, if we take into account the quality of the final product and the smoothness of the resulting products, then angle-cutting sawmills and double-disk horizontal sawmills are much more profitable in this regard.

Experts in Kedr specialized stores will always help you make the right choice and make a good purchase.

The Kedr company offers a variety of products: electric, gasoline, diesel band sawmills, as well as hybrid sawmills. It is noteworthy that, according to the company's website, Kedr-2, 3, 4 band sawmills cut logs up to 1100 mm in diameter.

There are 18 sawmills in the model range of the company, but they differ mainly in the type and power of the engine. We did not see cardinal differences in the design solutions of these sawmills, and outwardly they are very similar to each other. The design of the Kedr sawmills very much resembles the device of the Taiga sawmill, therefore the Kedr is not without the same shortcomings as the Taiga, leading to a deterioration in the quality of lumber.

Consider the most popular model: the KEDR-2 electric band sawmill (11 kW).

Frame:

Even at first glance at the design of the sawmill, it is easy to notice a lot of welding seams. But the less welding is used in the manufacture of the frame of the band saw, the better quality equipment. In the photographs we see two welded pipes with a massive structure of the sawmill. Interestingly, the manufacturer uses corner welding.

Knowledge of the laws of physics allows you to determine what such a design will lead to in the process of its use. We do not know the thickness of the pipe used, but we assume that it is thin-walled. The design of the sawmill, as we can see, is not protected from deformation.

Saw carriage:

The design of the saw carriage of the KEDR-2 sawmill, according to lumber manufacturers, degrades the quality of wood during sawing. Perhaps this is due to the fact that metal of small thicknesses is used in the manufacture of the saw carriage, and, perhaps, the method of raising and lowering the saw carriage chosen by the manufacturer has a negative effect.

Raising and lowering mechanism of the saw carriage:

When assembling the KEDR-2 sawmill, the same chain principle of raising and lowering the saw carriage is used. Chain-lifting the carriage is, of course, cheaper than installing a screw-nut system, where one nut can cost more than a whole chain, but raising the carriage on chains affects the quality of the lumber. Why? Let's go back to the laws of physics. Chains tend to stretch under the pressure of the body, which they raise / lower. The weight of the saw carriage of an industrial sawmill is more than 200 kg. This weight is significant and will certainly stretch the chain, which will cause the saw carriage to be uneven, because the chain will stretch unequally on the left and right. Such unevenness will affect the lumber, which will come out from under the saw “wavy”, and therefore, of less quality. The only question that remains when we look at such a device for lifting the saw mechanism is: what are the chains made of? If these are motorcycle chains, like at the Taiga sawmill, then it is clear that they will not last long.

Maximum log diameter and band saw parameters:

The Kedr sawmill, according to the manufacturer, is capable of sawing logs of fantastic sizes - up to 1100 mm thick. Such miracles, it turns out, are possible with saws 32-40 mm wide. and with a saw pitch of 22 mm (and in Europe and the USA such logs are sawn on machines with 100 mm saws, is it strange, isn't it?) 50 mm. and 25 mm. respectively. At the same time, High Point 42 saws logs of much more modest dimensions - up to 720 mm. thick.

Another strange moment: why the Taiga sawmill cuts 800 mm. saws 4.29 m long, in “Kedra” it is enough for logs that are almost one and a half times thicker, saws 4.026 m long? Interestingly, different sawmills cut the same logs with different saws. The question arises: which of them, let's say, is cunning, wishful thinking?

Dear timber processors, how many of you are consistently sawing logs with a thickness of more than 700 mm. using 35-40 mm band saws with a saw tooth pitch of 22 mm.? We would love to watch a video where a thick gauge is harvested under similar conditions or look at the results of a workpiece in one shift: is there a stable quality?

Pulleys:

Finally, our eyes see the difference between "Taiga" and "Cedar". On the sawmill "KEDR-2" sheet pulleys are used, and not cast steel, which are installed on the "Taiga". The quality of pulleys cut from a sheet of metal is higher, which is why given type pulley is actively used by European manufacturers of band sawmills. But from the photo it is not clear to us whether these pulleys are balanced.

Tension unit device:

There are several ways to manufacture a band sawmill tension unit: hydraulic, using springs, spring tension, rigid tension unit. The manufacturer of the sawmill "KEDR-2" uses a hard tension, which does not have the best effect on the service life of the band saw.

To determine whether the saw is properly tensioned, the manufacturer offers using a torque wrench. This method can only cause laughter, because the accuracy of this device is not much different from the old-fashioned way to determine the tension by eye.

Conclusion:

The KEDR-2 band sawmill is not without the same drawbacks as the Taiga sawmills: lifting the saw carriage on chains, a rigid tension unit, overestimated characteristics of a log suitable for sawing, etc. The only bright spot on the general nondescript background is the use of a cast pulley. All the flaws we have identified in this band sawmill lead to lumber manufacturers not getting the quality they would like to see.

Specifications:

There are 18 sawmills in the model range of the company, but they differ mainly in the type and power of the engine. We did not see cardinal differences in the design solutions of these sawmills, and outwardly they are very similar to each other. The design of the Kedr sawmills very much resembles the device of the Taiga sawmill, therefore the Kedr is not without the same shortcomings as the Taiga, leading to a deterioration in the quality of lumber.

Consider the most popular model: the KEDR-2 electric band sawmill (11 kW).

Good band sawmill - frame:

Even at first glance at the design of the sawmill, it is easy to notice a lot of welding seams. But the less welding is used in the manufacture of the frame of a band saw, the better the quality of the equipment. In the photographs we see two welded pipes with a massive structure of the sawmill. Interestingly, the manufacturer uses corner welding.
Knowledge of the laws of physics allows you to determine what such a design will lead to in the process of its use. We do not know the thickness of the pipe used, but we assume that it is thin-walled. The design of the sawmill, as we can see, is not protected from deformation.

Saw carriage:

The design of the saw carriage of the KEDR-2 sawmill, according to lumber manufacturers, degrades the quality of wood during sawing. Perhaps this is due to the fact that metal of small thicknesses is used in the manufacture of the saw carriage, and, perhaps, the method of raising and lowering the saw carriage chosen by the manufacturer has a negative effect.

Raising and lowering mechanism of the saw carriage:

When assembling the KEDR-2 sawmill, the same chain principle of raising and lowering the saw carriage is used. Chain-lifting the carriage is, of course, cheaper than installing a screw-nut system, where one nut can cost more than a whole chain, but raising the carriage on chains affects the quality of the lumber. Why? Let's go back to the laws of physics. Chains tend to stretch under the pressure of the body, which they raise / lower. The weight of the saw carriage of an industrial sawmill is more than 200 kg. This weight is significant and will certainly stretch the chain, which will cause the saw carriage to be uneven, because the chain will stretch unequally on the left and right. Such unevenness will affect the lumber, which will come out from under the saw “wavy”, and therefore, of less quality. The only question that remains when we look at such a device for lifting the saw mechanism is: what are the chains made of? If these are motorcycle chains, like at the Taiga sawmill, then it is clear that they will not last long.

Maximum log diameter and band saw parameters:

The Kedr sawmill, according to the manufacturer, is capable of sawing logs of fantastic sizes - up to 1100 mm thick. Such miracles, it turns out, are possible with saws 32-40 mm wide. and with a saw pitch of 22 mm (and in Europe and the USA such logs are sawn on machines with 100 mm saws, is it strange, isn't it?) 50 mm. and 25 mm. respectively. At the same time, High Point 42 saws logs of much more modest dimensions - up to 720 mm. thick.

Another strange moment: why the Taiga sawmill cuts 800 mm. saws 4.29 m long, in “Kedra” it is enough for logs that are almost one and a half times thicker, saws 4.026 m long? Interestingly, different sawmills cut the same logs with different saws. The question arises: which of them, let's say, is cunning, wishful thinking?

Dear timber processors, how many of you are consistently sawing logs with a thickness of more than 700 mm. using 35-40 mm band saws with a saw tooth pitch of 22 mm.? We would love to watch a video where a thick gauge is harvested under similar conditions or look at the results of a workpiece in one shift: is there a stable quality?

Finally, our eyes see the difference between "Taiga" and "Cedar". On the sawmill "KEDR-2" sheet pulleys are used, and not cast steel, which are installed on the "Taiga". The quality of sheaves cut from sheet metal is higher, which is why this type of sheave is actively used by European manufacturers of band sawmills. But from the photo it is not clear to us whether these pulleys are balanced.

Tension unit device:

There are several ways to manufacture a band sawmill tension unit: hydraulic, using springs, spring tension, rigid tension unit. The manufacturer of the sawmill "KEDR-2" uses a hard tension, which does not have the best effect on the service life of the band saw.

To determine whether the saw is properly tensioned, the manufacturer offers using a torque wrench. This method can only cause laughter, because the accuracy of this device is not much different from the old-fashioned way to determine the tension by eye.

The KEDR-2 band sawmill is not without the same drawbacks as the Taiga sawmills: lifting the saw carriage on chains, a rigid tension unit, overestimated characteristics of a log suitable for sawing, etc. The only bright spot on the general nondescript background is the use of a cast pulley. All the flaws we have identified in this band sawmill lead to lumber manufacturers not getting the quality they would like to see.
Sawmill cedar photo

Specifications:
Length of processed logs, mm up to 6500
Rail track length, mm 7650
The maximum diameter of the processed log, mm up to 1100
Board (beam) thickness, mm 1 - 270
Thickness of the last board, mm 15
Cutting thickness, mm 1.9 - 2.4
Productivity for 8 hour shift, m3 up to 15
Saw pulley diameter, mm 510
Saw band speed, m/s 30
Saw drive electric motor power, kW 11
The power of the electric motor for lifting and lowering the saw mechanism, kW 0.55
Voltage, V 380
Raising / lowering the saw carriage electromechanical
Saw carriage feed
Overall dimensions of the machine length, mm 7650
width, mm 1800
height, mm 1600
Machine weight, kg 370
Rail track mass, kg 310
Characteristics of the recommended band saw blades Blade length, mm 4026
Width of a tape cloth, mm 32 - 40
Step, mm 22
Thickness, mm 0.9 - 1.1

Choice of woodworking equipment

Sooner or later, any person involved in the manufacture of furniture or woodworking faces the question of upgrading or purchasing new equipment. Initially, there is a replacement or simply the purchase of manual equipment. Hand milling cutter, screwdriver, electric drill, grinding machine. Here, when choosing a purchase, it is important to decide what you expect from the purchased equipment.

It is quite understandable that the human desire is for the tool to serve for a long time and not break. But even when purchasing expensive woodworking equipment of well-known brands, you are not immune from its possible breakdowns. It is important not only to decide on the model when buying, but also to carry out the simplest maintenance of the tool. A lubricated shaft in time will save your electric drill from overheating, and you will not have to take it to repair once again. At the end of the working day, clean your grinder and hand-held milling machine from tyrsy and chips, if necessary, once again check the lubrication of all rubbing surfaces. Important point: when choosing a router, you must know exactly what material you will use it on. A tool with low power may not be able to handle woodworking of thick and hard material. A high power hand mill will tear the laminate on laminated chipboard. The hand tools of German and Austrian manufacturers have proven themselves very well.

The price-quality ratio is fully justified. If you need panel saws or woodworking machines, then their choice must be approached with all seriousness. Italian woodworking equipment has proven itself very well. Italian multifunctional woodworking machines are able to work with material of various densities and thicknesses, resulting in an ideal board and veneer. With panel saws, the situation is about the same. It is more important here, for a higher intensity of labor, the ability to quickly replace dull saws, on some models, in order to get to the saw, it is necessary to raise the table, which is not at all useful when cutting is heavily loaded. Choosing a model with automatic feeding of the laminated board will allow only two workers to work behind the machine. There are many more nuances inherent in a particular model. Good luck in choosing your equipment.

Saw blade setting sequence

When buying band saw equipment (band sawmill), owners, especially beginners, often do not have a very good idea of ​​​​the sequence of setting the saw band on sawmill pulleys.

This directly affects the quality of sawing, the time it takes to set up the machine, the appearance of unjustified claims against the manufacturer of band sawmills, etc.

Below is the sequence of setting up a band sawmill, which the specialists of our company have applied to hundreds of machines own production as well as machines from other manufacturers.

The band saw setup sequence is reliable and not very complicated, although it does require some skill. Setup consists of the following four main steps:

Stage 1. Aligning the pulleys of the band sawmill in the same plane vertically

The alignment of the pulleys of the band sawmill in the same plane vertically is carried out with the help of a plumb line and adjusting wheel bolts, with the help of which the parallel plane of the wheels of the plumb line is achieved.

Stage 2. Aligning the pulleys of the band sawmill in the same plane horizontally

The alignment of the pulleys in the same plane horizontally is carried out with the band saw installed and tensioned, using a cord (thread) stretched along the machine. By adjusting the saw wheels (pulleys), the wheels are positioned in such a way that their planes are parallel to the horizontally stretched thread.

After setting the plane of the wheels in the horizontal plane, the drive wheel is fixed, in the resulting adjustment according to p.p. 1.2 position, and in the future it is not used in the setting.
Stage 3. Exposing the gap between the interdental cavity of the saw blade and the front edge of the driven pulley of the band sawmill

Setting the gap between the interdental cavity of the saw band and the front edge of the driven pulley is carried out with the band installed and tensioned, by swinging the driven wheel in a horizontal plane.

Stage 4. Exposing the gap between the interdental cavity of the saw blade and the front edge of the drive pulley of the band sawmill

Setting the gap between the interdental cavity of the saw band and the front edge of the drive pulley is carried out with the band installed and tensioned by swinging the driven wheel in a vertical plane.
Band sawmill - malfunctions and their overcoming
There are times when a machine that seems to be normally tuned begins to indulge and you have to look for the reason for the "change in character". Listed below are the most common malfunctions in the operation of band sawmills and how to eliminate them.

Band saw setup

Deviation of lumber dimensions from the face value in terms of thickness:
the saw blade is clogged with tar, sawdust - clean the saw blade with kerosene or turpentine;
“wandering” of the saw - increase the tension of the saw;
"dull" saw - replace or sharpen the saw;
incorrect setting of the saw teeth - replace the saw or make the correct setting of the saw teeth;
the rail track does not meet the technical requirements - set the guides.

The saw blade dulls quickly:
dirty logs;


excessively large feed;
substandard saw;
weakening of the saw tooth due to excessive heating of the tooth during sharpening;
incorrectly sharpened saw blade;
excessively large feed;
substandard saw.
Saw blade break:

incorrectly sharpened saw blade - sharpen the blade in accordance with the instructions for sharpening saw blades;
excessive tension of the saw blade - set the tension of the saw blade;
the log is poorly fixed - to fix the log;
the saw blade is offset from the center of the pulley - set the saw to the center of the pulley;
the saw is made of low-quality material - do not use saws of dubious quality;
saw blade thickness<0,8мм или >1.07 mm - use saws with a thickness of 0.8 ... 1.07 mm;
vibration of the saw - check the play in the bearing units of the pulleys;
poor-quality welding of the saw blade - check the saw for cracks and the quality of welding;
bent saw - do not use saws of dubious quality;
the saw has been energized for a long time - do not leave the saw in a taut state;
large load - reduce the feed rate;
vibration of the pulleys - check the play in the bearings, the balancing of the pulleys;
sticking of sawdust - clean the pulleys from sawdust;
overheating of the saw - monitor the operating time.
Wavy cut:
incorrectly sharpened saw blade - sharpen the saw blade in relation to the type of wood;
uneven feed of the saw frame - ensure uniform feed;
the feed of the saw frame is high - reduce the feed;
the support rollers are incorrectly adjusted - adjust the rollers;
incorrect wiring of the saw teeth - sharpen and spread the saw teeth;
low engine power for a given log diameter - replace the engine with a more powerful one;
weak saw blade tension - tension the saw according to technical requirements(manometer control);
incorrectly selected saw frame feed - select the feed depending on the structure of the wood;
dull saw - sharpen the saw;
the log is incorrectly fixed - fix the log according to the instructions;
resin sticking to the saw blade - replace the saw;
sticking of foreign objects on the rails - clean the rails;
the rails are installed in waves - install the rails evenly.

Guide rollers do not rotate when sawing:
jammed bearings;
seizure of bearings;
rollers are incorrectly adjusted.
The cross section of the board has an irregular shape (the corners are not straight):
the saw blade is not parallel to the guide frame (support arch) - adjust the parallelism of the support arch;
stop on the clamp is set incorrectly - adjust the stop on the angle.

Braking and stopping the saw:
the geometry of the saw does not correspond to the structure of the sawn wood - sharpen the saw according to the requirements;
dirty log - clean the log from dirt;
extreme tension - loosen the tension;
greasmerny giving - to choose the correct high-speed mode;
guide rollers incorrectly set - adjust the position of the rollers;
the operating time of the saw exceeds the recommendations of the passport for the saw;
pulley runout - eliminate the cause.
Saw overheating:
sharpening the saw does not correspond to the structure of the wood - sharpen the saw according to the requirements;
feed is incorrectly selected - select the optimal feed;
Lack of coolant (cutting fluid) in the cutting zone - ensure that coolant enters the cutting zone;
sawdust sticking - clean sawdust from sawdust;
dull saw - replace the saw;
Incorrect sharpening of the saw - sharpen the saw according to requirements.

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