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To see the entire line of LIBRA sanders and options CLICK HERE FOR BROCHURE.

The LIBRA 45 RTC 135 is a 53” double head combination sander specifically designed for calibration and sanding of wood based panels with the ability to sand veneered panels. The Libra 45 offers the highest degree of finish quality for the medium to  large factory. This combination sander offers some of the best technology in its class wrapped in a tank like super structure.


Unit 1:

  • Contact Roller
    • Steel grooved x 140 mm (5 ½ ”) dia.
    • Pneumatic positioning
    • Micrometric height adjustment

Unit 2:

  • Combination Sanding Head
    • Rubber covered 45 Shore x 140 mm (5 ½ ”) dia.
    • Extractable rigid flat platen (density = 0.68)
    • Electronic segmented platen
    • Micrometric height adjustment
    • Pneumatic positioning


·        Working width

1350 mm



·        Working thickness

4 - 170 mm

¼ – 6½”


·        Abrasive belt size

1370 x 2150 mm

53” x 84.64”


·        Variable Feed speed

3.5 – 18mpm

11.5 – 59 fpm


·        First unit motor




·        Second unit motor




·        Feed belt motor


3 HP


·        Compressed air pressure

6 bar

90 psi


·        Compressed air consumption

40 NL/min

2 cfm


·        Dust extraction velocity

20 mps

65 fps


·        Dust extraction volume

3180 m3/h

1872 cfm




LIBRA 45/3 RTC 135


Electronic digital thickness readout in inches


Version “Z SUPER”


Variable controlled feed motor, 3Hp 3.5 to 18 m/min


- Pneumatic selector 1st, 2ndand 3rd units from control.  Electronic worktable positioning device.


In-feed / Out-feed support rollers. 5 idle rollers on in-feed and 1 driven / 4 idle rollers on out-feed.


Door with window for head inspection


Oscillating belt cleaning blower on unit 2


LED lamps for internal lighting


Motor upgrade, 1st head 30Hp


Optimizer belt introduction “Optimize Plus”


Motor upgrade, 2nd head 24hp


Vacuum table with 4Hp fan motor


220/230 volt


Electronic control Fox 1000 S


Execution in complying with USA regulations


Touch Screen Display 10.4”


Seaworthy packing for “version 135”


Standard Equipment

  • Welded structural tubular steel frame
  • Infeed table w/ variable feed speed
    • 2 idle infeed and 2 idle outfeed rollers
    • Natural (live) rubber profiled conveyor top
    • Powered thickness adjustment
    • Infeed pressure roller w/ anti kick-back system
    • Automatic conveyor belt tacking
    • Automatic break on all units
  • Grooved steel contact roller 140 mm (5½ ”) diam.
  • Combination Sanding Head
    • Rubber covered contact roller 140 mm (5 ½ “) 45 sh.
    • Elastic Segmented Platen extractable bar (density D=0.68)
    • Flexible Steel backed felt pad w/ graphite cover
    • Pneumatic abrasive belt tensioning
  • Micrometric height adjustment on all units


  • 230V – 3 Ph – 60 Hz
  • Safety switches on all hinged doors
  • Automatic Star-delta Start
  • Overload protection
  • Main switch lock out

·        Automatic Disc Braking System

o       Pneumatically operated

o        Failsafe design

·        Infeed feed roller system

o        Anti kick-back system

o        Protects operator

·        Pressure rollers

o        Rubber covered

o        Before and after sanding unit 2

o        Insures positive feed into contact roller

o        Securely holds work-pieces

·        Automatic Feed Belt Tracking

o        Electronically controlled

o        Pneumatically operated

o        Continuous tracking

o        Over tracking override

·        Pneumatic on/off  Positioning

o        In lieu of manual positioning

o        For all three Units

·        Optimize Plus belt introduction optimizer

·        Fox 1000 S control

o   10.4” color LCD touchscreen display with PLC.

o   Machine control by means of Touch Screen controls, with possibilityof saving up to 120 working programs.

o   Total control of one electronic segmented platen, with 3 operatingmodes:

-         Platen excluded.

-         Flat platen with all sections activated.

-         Segmented platen activated, with sections                                                                                                                                                                                                                                                                                                                                                                     activated by thegeometrical shape of the workpiece.

o   Pre-selection and activation of + or – sections on the right or on

o   the left of the panel.

o   Detection of the cut-out pieces.

o   Automatic sequential motor start-up.

o   Graphic display of the machine configuration.

o   Management, control and synchronization of the flat platen and of

o   the 45, 30 or 20 Sh sanding rollers (only if machine is equipped with

o   switch/switches for controlled positioning).

o   Management and control of the working height.

o   Management and control of the feed speed (providing the machine

o   is equipped with feed inverter).

o   Management and control of sanding belts speed (providing the

o   machine is equipped with main motors controlled by inverter).

o   Management of the main motors speed selection (providing the

o   machine is equipped with 2 or 3 speed motors).

o   Activation and control of the blowers timing, for sanding belts and

o   outfeed rotating blowers cleaning.

o   Reverse rotation control of two abrasive belts

o   Bar chart graphics showing sanding belt wear.

o   Machine activity report (working hours/machine on hours).

o   Automatic sequential main motor start-up

o   Control of 3 operating heads

o   Control of the working height

o   Control of on/off positioning and synchronized raise /fall of the platen and sanding rollers

o   Control of 2 inverters ( feed conveyor and/or operating units)

o   Control of sanding belt speed

o   Control of panel cleaning roller and cleaning blowers with rotating nozzles

o   Control of vacuum table start-up

o   Reverse rotation control of one sanding belt

o   Start up and timed control of the abrasive belt cleaning blowers and panel cleaning blowers with rotating nozzles

o   Machine control in manual, semiautomatic or automatic mode with 4 working programs, customizable and easily selectable by means of 4 function keys

o   Machine alarm control

o   Machine activity report(working hours/machine on hours) 

·        Oscillating belt cleaning blowers on 2nd  head 

·        Extended Infeed and Outfeed Support

o        5 idle infeed and  1 driven / 4 idle outfeed rollers

 ·        Worktable rise and fall

o   The table is supported by 4 large jackscrews to prevent table movement and allows for long lasting tolerances an levelness

·        Vacuum table with 4Hp fan motor 

·        Electronic Segmented  Platen

o   In feed reading bar detects the rise and fall of the surface to be sanded.

o   Variations are transmitted to the control unit

o   The control unit activates each segment pneumatically as dictated by the reader bar and timed to the speed of the in feed conveyor

o   Segments pitched at 30mm

o   Chevron belt 



It is the responsibility of the purchaser to position and level the machine it its final operating position, and connect all utilities to the machine prior to the arrival of the Field Service Technician.  The FST will then make final machine adjustments, run sanding tests on customer’s work-pieces, and instruct the machine operator how to operate the machine to achieve optimum results.


Seller warrants, for a period of one (1) year beginning on the date the Machinery is accepted, that the Machinery will be free of defects in workmanship and materials, excluding belts, bearings, and common electrical parts, which carry a six-month warranty. This warranty does not include parts consumed during normal operation (wearable items), working units, or maintenance required in the ordinary course of operation.  Seller shall warrant any replacement spare parts and accessories installed pursuant to this warranty for the period of ninety (90) days. 


Tooling, including blades, is not included unless noted.  Upon request, we can supply a quotation of the most suitable tools required for use on this machine. 


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