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Extend - SX Series

Heavy Extend solution for all operations

With the next level of the existing Extend machines the SX series saws offer high machining performance. Higher driving output, stronger saw band, and more robust frame are the specifics of SX machines.

Technical data

Elaborated to every detail

Simple control

Simple control through a modern control panel with an illuminated display. Status reports are displayed in noncoded texts.

Band guiding

The saw band is guided with large, mechanically preloaded and ground hardmetal plates. Guiding rollers provide redirecting with a possible high load, reducing stress during work.

Tolerance-free guiding

The band guiding arm is guided by two very precise linear guides and four supports. Thanks to tolerance-free preloading of guiding elements, vibrations in this area are practically eliminated.

Polymer concrete – reduced vibrations

Cuts with minimum vibrations are the basis for precision and long lifetime. Polymer concrete offers ideal damping qualities to be used with saws. In connection with the preloaded, generously dimensioned, tolerancefree linear guides, the polymer concrete technology ensures cuts almost without vibrations, with the highest machining performance. The polymer-concrete mixture was developed specifically for the use in saws and represents a well guarded BOMAR company secret. In order to reduce vibrations, the Solid series saws are fitted with polymer concrete in various places. The saw frame, base, and column form a damping frame, providing incomparable vibration free cutting.


ADFR – Highest precision. Fast cutting.
Minimal wear.

The ADFR system regulates the coordination of the cutting pressure and downfeeding automatically and in real time. The saw band current loading and the cutting course according to the material shape are regulated with a sensor. With materials of bigger cross-sections, the cutting channel extends and the saw band loading increases. If the downfeeding in this section is not automatically adjusted, the saw band lifetime may be profoundly reduced or the cutting significantly extended due to smaller downfeeding.

ADFR function in cutting

Both-sided monitoring

The Solid series machines are equipped with regulating sensors located on both blocks of the band guiding. The sensors record pressure on the saw band along the whole cutting channel and react to every change.

Flexibility for adapting to individual needs

Extend SX saws are highly flexible in material clamping. Almost any individual solution is possible, from normal clamping devices to mobile clamping tables.
The combination of a mobile clamping table with revolving guides of the saw band for horizontal and vertical cutting provides a highly flexible solution. With the use of an adapted standard vice, usual cutting may also be easily performed.

Clamping board

Clamping device for horizontal cutting of steel circles with a mobile clamping table with a ball screw.

Attachable vice

With the use of an attachable, full-stroke vice with hydraulic drive, usual cutting operations may be performed.

Centred clamping unit for pipes

Thanks to the flexibility of Extend machines, cutting lines for circular material present no problems any more.
Thanks to a roller track, specially adapted for the given use with prismatic rollers and centre-clamping vice, Extend SX machines present an ideal solution for cutting thick-wall pipes and full circular material.

clamping systems

Flexible clamping systems

Thanks to the basic modular structure of Extend SX saws and a corresponding wide range of clamping modules, nothing impedes individual solutions depending on relevant requirements. A range of ready-to-use solutions extends from a simple vice to highly-flexible clamping boards with T-shape grooves for machining parts of special shapes.

Clamping board with T-shape grooves

Firmly mounted clamping board with T-shape grooves for parts of special shapes, such as casts.

Two vices

One vice before and one behind the saw band, both individually operated.

Mobile vices

Vice before and behind the saw band with a short stroke travel along the device axis for using hardmetal saw bands.

Standard vice

Full-stroke standard vice for clamping before the saw band.

Divided vice

Divided vice for parallel clamping of material before and behind the saw band.

Fully automatic cutting lines

In combination with the X series feeding systems, the Extend SX series saws may be assembled as fully automatic machines. With the feeding length from 1,500 to 6,000 mm and possible incremental feeding of material in small cutting lengths, Extend SX automatic machines cover a wide spectrum of uses. Extend SX series automatic machines are equipped with modern control including a graphic display with a touch screen.

feeding length

Thanks to flexibility, the feeding
length may be adjusted individual-
ly to the customer's

Certified safety

All Extend SX series saws are supplied with a declaration of conformity with the current EU directives for machinery, issued by TÜV Süd for the Czech Republic.

Device solution

Device solution with Extend SX

Extend machines are fully equipped to be integrated in cutting lines with extensive handling devices and additional machining units. Thanks to the control and connections they can be easily connected to the central unit. The X system with numerous options enables handling devices to be ideally dimensioned according to given requirements and environment.

Pipe machining

An additional unit for widening pipes for machining large-size pipes.

Heavy stop systems

Adapted stop systems to be used with vertical rollers also on the output side.

Transverse conveyors

Underhung chain conveyors or tow hooks for semiautomatic transverse moving of material.

System-X – flexibility in new dimensions

The X system series roller tracks and handling modules offer an entirely new dimension of flexibility in equipment individualisation. The roller distances may be freely configured and adjusted as required by the application. The X system roller tracks may be supplied in both simple and driven versions. Thanks to an individual number of driving units the tracks may be optimally adjusted. The length stop are available in a wide range from simple, manually operated stop systems to fully NC-controlled measuring stops with an automatic back stroke. Further, electronic connection with the saw is possible.


Driven roller tracks and the feeding unit of automatic saws are electronically synchronised.


The roller tracks drives may be distributed individually along the whole length of the device.


Accessories for high productivity

Swarf conveyor

A high-performance grabbing conveyor dimensioned to ensure a sufficient capacity for swarf disposal at the maximum cutting power.

PCC Sensor

Continuous control of the cutting precision. If the set value is exceeded, the machine operation will be stopped after the current cycle termination with an appropriate report.

Bundle clamping device

Cutting in layers and bundles increases productivity, i.e. the saw utilisation. The main vice and material feeding vice are equipped with vertical clamping units.

Hydraulics preheating

At low temperatures, hydraulic oil is heated from the machine start-up, which reduces the idle time until necessary viscosity is reached.

Swarf removing pistol

For cleaning bearing surfaces or regular flushing of accumulated swarf into a swarf collector.

Cooling agent heating

Heating of the cooling agent at low temperatures protects the emulsion from freezing and the machine from possible damages.

Clamping pressure regulation

Sensitive regulation of the clamping pressure for the main and material feeding vices to prevent possible deformations of thin-walled pipes and profiles.


A micro-spray unit applies a lubricating film on tips of teeth and feedings of band-saw blades for ideal sawing of tubing and profiles.

Hardmetal package

For certain cutting operations saw bands fitted with hardmetal are necessary. With the TK set, Extend SX series saws may be adjusted to be used for cutting hardmetals. The set includes saw band guiding, increased driving output, and ideally synchronised transmission.

Safety with the system

Personnel are the most valuable part of every business and must be protected in compliance with current safety criteria. The SECURFLEX safety system allows every device to be secured individually, depending on the environment and requirements. Besides grids, doors and maintenance elements, the system offers a laser light lock system ensuring extensive safety, especially in the area of material feeding and removal of the cutting line. The device securing is divided into individual safety circuits to prevent interruption of the operation of other sections.


BOMAR, spol. s r.o.


Těžební 1236/1

627 00 Brno
Czech Republic


Phone: +420 533426100
Fax: +420 533426109


BOMAR - Sägebänder - IMAGE

CTM Bohrsysteme