Marunaka   High  precision  Semi-Automatic knife Grinder / Lappers
Marunaka dual head grinders for rough grinding and superfine lapping in one easy operation.
GLE-503L

GLE - 503L   Grinder /  Lapper    Approx Price $ 14.000 USD

Knife length x width x thickness : 500 x80 x 10 mm
Grinding motor : 0.75 Kw
Lapping motor : 0.2 Kw
Feed motor : 90 w
Pump : 40 w
Feed speed : 5.3 m/min. (50Hz)
Net Weight : 295 Kgs

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Simple & basic grinder up to max.500mm long knife (for super surfacer, planer etc.).
Unique line-setting system with the grinding and lapping wheels aligned on one line is employed.
Automatic feeding with a lever-switch for easy operation.
Grinding strokes can be changed easily by sliding proximity switch.
Linear guide rails maintain grinding accuracy for long time.
Knife setting on the bed is quickly done by magnet-gauges.

GH-70mL GH-50mL Grinder / Lapper      Call for pricing

Max. knife length : 500 mm
Grinding motor : 0.75 Kw
Lapping motor : 0.4 Kw
Feed motor : 0.2 Kw
Pump : 40 w
Feed speed : 9.3 m/min. (50Hz)
Net Weight : 440 Kgs

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A high grade grinder with back-face grinding function. Back-face grinding work is done safe and simple. Ultra-precise mirror surface finishing is performed in 1/5 the time of manual work.
GH-70mLGH-70mL  Grinder / Lapper   Approx Price $23,000 USD

Max. knife length : 700 mm
Grinding motor : 0.75 Kw
Lapping motor : 0.4 Kw
Feed motor : 0.2 Kw
Pump : 40 w
Feed speed : 9.3 m/min. (50Hz)
Net Weight : 580 Kgs

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A high grade grinder with back-face grinding function. Back-face grinding work is don safe and simple. Ultra-precise mirror surface finishing is performed in 1/5 the time of manual work.
GS-80L  Grinder / Lapper   Call for Price  

Max. knife length : 800 mm
Grinding motor : 2.2 Kw
Lapping motor : 0.4 Kw
Feed motor : 0.4 Kw
Pump : 60 w
Wheel Rpm : 1400/1700 (50/60Hz)
Finish Wheel: 100mm dia x 50 x 15.88 mm dia                                                         Rough wheel: 150mm dia x 100 x 15.88mmdia

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Used 1973   GL-450nl Grinder/Lapper
 

Knife GrinderVideo

Price $4,500 USD

  Sale $2,900 USD 
Marunaka's grinders are developed mainly for grinding knives of woodworking machines, but a lot of our grinders are being used for grinding knives for paper, resin, plastic, food machinery, etc. We are pleased to do test grinding of your knives.