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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)
    • Elastic 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


2 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 45/2 RTC 135


Variable controlled feed motor, 2 Hp  3.5 to 18 m/min


Version “y”


Motor upgrade, 1st head 25 Hp


Pneumatic selector 1st and 2nd  units from control.  Electronic worktable positioning device.


Motor upgrade, 2nd head 20 Hp


Door with window for belt/head inspection


230 volt configuration


LED lighting inside the cabinet for inspection


USA Safety Standards


Electronic digital thickness readout in inches


Pallet and Nylon 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
    • Pneumatically operated
    • Fail safe design
  • Infeed feed roller system
    • Anti kick-back system
    • Protects operator 
  • Grooved steel and rubber contact rollers
  • Pressure rollers
    • Rubber covered
    • Before and after sanding unit 2
    • Insures positive feed into contact roller
    • Securely holds work-pieces
  • Automatic Feed Belt Tracking
    • Electronically controlled
    • Pneumatically operated
    • Continuous tracking
    • Over tracking override
  • Pneumatic on/off Positioning
    • In lieu of manual positioning
    • For Both Units
  • FOX 500 KTR Controller
    • Controls the automatic raise and fall of the platen
    • Automatic rise and fall is synchronized with inverter speeds
    • Manages the timing of 2 contact heads 1 roller and 1 platen
    • Digital read out for working height inches
    • Working unit on/off positioning and control
  • Infeed and Outfeed Support
    • 2 idle infeed and outfeed rollers


  • Worktable rise and fall
    • The table is supported by 4 large jackscrews to prevent table movement and allows for long lasting tolerances an levelness
  • Elastic Segmented Platen
    • Independent platen segments that push the felt platen in contact with the panel
    • Each segment 56mm with a total of 24 segments
    • One flat semi-rigid contact insert made of flexible steel plate, felt ( D=65), and glued graphite cloth (for solid wood and veneered panels)
    • One Soft semi-sandwich contact insert made of flexible steel plate, rubber, felt ( D=65) and glued graphite cloth (for veneered or lacquered panels)


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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