Boston Gear 800BR Series helical worm gear drives are heavy duty helical gear drives with long life performance features and simplified maintenance. The 800BR Series comes in double and triple reduction ratios from 8:1 through 900:1 and a maximum 10HP rating. As always, the 800BR Series is available via Reducer Express.Pre-LubricatedYesRatio125:1Max Input HP3/4Fan CooledNoUnit Of Measure ShowENOutput RPM @175014.0Output Shaft StyleHollow O/PProduct Family800BR SERIESExact Gear Ratio123.75Product DescriptionSF852BR-D/R RED 125:1 Ratio, No Base, "H" ASSYRated Efficiency78%BaseNo BaseMax Output Torque Cap2630Input Frame SizeB5-56CInput StyleQuillReduction StagesDoubleWeight35Motor HP0.75Recommended LubricationKlubersynth UH1 6-460Family Id30,313AGMA Service ClassIOutput Shaft O.D./Bore Size1.375