OSR II
OSR II combines both, a calibrating machine and orbital scratch removal (OSR) units, in one machine. Irregularities of thickness from glued connections and remains of glue are removed by two or three contact rollers. Due to the succession of a steel contact roller and one or two rubber-coated contact rollers the scratches from the abrasives continuously become finer. The longitudinal sanding unit with a pressure segment belt makes them even finer. The optional RUT disk brush unit removes sharp edges from the work pieces. Finally two OSR units remove all visible sanding marks. In order to minimize vibrations in the calibration process produced by OSR units the contact rollers and the OSR units are mounted on separate supports.
When sanding frames and other work pieces with different grain directions sanding against the grain direction cannot be avoided. The generated scratch patterns are very evident, especially when dark stains are used. The Heesemann orbital sanding unit removes these scratches and leaves a clean surface with no visible scratches.


Technical Data
![]() Contact roller
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![]() Longitudinal unit with pressure segment belt
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![]() RUT disk brush unit
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![]() Orbital sander
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(Sanding belt) Dimensions |
2,620 x 1,400 (Ø 8.6 x 4.6 ft) |
2,620 x 1,400 mm (8.6 x 4.6 ft) |
19 disk brushes Ø 180 mm |
2.620 x 1.400 mm |
Drive performance | 15 - 45.0 kW |
15 kW 22 kW |
Brush rotation: 7.5 kW inverter Brush movement: 1.5 kW inverter |
20,5 kW |
Belt speed | 24 m/s |
1.8 - 9/18 m/s 2.0 - 9/20 m/s |
Brush rotation: 160 - 800 m/min Brush movement: 5 - 25 m/min |
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Extraction connection |
Ø 250 mm / Ø 280 mm (0.82 ft / 0.91 ft) |
Ø 160 mm (0.525 ft) |
2 x Ø 160 mm 2 x Ø 180 mm |
Ø 146 mm |
Air velocity | min. 20 m/s | min. 20 m/s | min. 20 m/s | min. 20 m/s |
![]() Contact roller
(Sanding belt) Dimensions2,620 x 1,400
(Ø 8.6 x 4.6 ft) Drive performance15 - 45.0 kW
Belt speed24 m/s
Extraction connectionØ 250 mm / Ø 280 mm
(0.82 ft / 0.91 ft) Air velocitymin. 20 m/s
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![]() Longitudinal unit with pressure segment belt
(Sanding belt) Dimensions2,620 x 1,400 mm
(8.6 x 4.6 ft) Drive performance15 kW
22 kW Belt speed1.8 - 9/18 m/s
2.0 - 9/20 m/s Extraction connectionØ 160 mm
(0.525 ft) Air velocitymin. 20 m/s
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![]() RUT disk brush unit
(Sanding belt) Dimensions19 disk brushes
Ø 180 mm Drive performanceBrush rotation: 7.5 kW inverter
Brush movement: 1.5 kW inverter Belt speedBrush rotation: 160 - 800 m/min
Brush movement: 5 - 25 m/min Extraction connection2 x Ø 160 mm
2 x Ø 180 mm Air velocitymin. 20 m/s
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![]() Orbital sander
(Sanding belt) Dimensions2.620 x 1.400 mm
Drive performance20,5 kW
Belt speedExtraction connectionØ 146 mm
Air velocitymin. 20 m/s
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Machine data |
![]() Dimensions (L x W x H)
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![]() Weight
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![]() Feed speed
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R / R / Lef / OSR / OSR |
max. 4.800 x 2,300 x 2,250 mm max. 15.75 x 7.55 x 7.38 ft |
approx. 12,000 kg (26,460 lbs) |
3 - 15 m/min. |
R / R / Lef / RUT / OSR / OSR |
max. 5.400 x 2,300 x 2,250 mm max. 17.72 x 7.55 x 7.38 ft |
approx. 14,000 kg (30,865 lbs) |
3 - 15 m/min. |
R / R / R / Lef / OSR / OSR |
max. 5.400 x 2,300 x 2,250 mm max. 17.72 x 7.55 x 7.38 ft |
approx. 14,000 kg (30,865 lbs) |
3 - 15 m/min. |
![]() Dimensions (L x W x H)
R / R / Lef / OSR / OSRmax. 4.800 x 2,300 x 2,250 mm
max. 15.75 x 7.55 x 7.38 ft R / R / Lef / RUT / OSR / OSRmax. 5.400 x 2,300 x 2,250 mm
max. 17.72 x 7.55 x 7.38 ft R / R / R / Lef / OSR / OSRmax. 5.400 x 2,300 x 2,250 mm
max. 17.72 x 7.55 x 7.38 ft |
![]() Weight
R / R / Lef / OSR / OSRapprox. 12,000 kg
(26,460 lbs) R / R / Lef / RUT / OSR / OSRapprox. 14,000 kg
(30,865 lbs) R / R / R / Lef / OSR / OSRapprox. 14,000 kg
(30,865 lbs) |
![]() Feed speed
R / R / Lef / OSR / OSR3 - 15 m/min.
R / R / Lef / RUT / OSR / OSR3 - 15 m/min.
R / R / R / Lef / OSR / OSR3 - 15 m/min.
3 - 15 m/min.
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