GB48B Cast Iron Change GearBoston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input. All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together, allowing them to spin on an intermediate shaft. The change gears we stock range from 20 tooth through 128 tooth gears, in one tooth increments, depending upon the diametrical pitch, for a

Click here for spec sheets: BUCNPPA Spec Sheet

Ideal for wash down applications in wet or harsh environments or where sanitary conditions are a factor

Friction force stops and holds the motor shaft

Product Note: BOStonE F-1 bearings may be green

Click here for spec sheets: BUC Spec Sheet

While 20° PA is generally recognized as having a higher load-carrying capacity

Center Distance: 1

Spring-lid oil cap can be positioned 4 ways

Boston Gear manufactures both 14 1/2° and 20° PA

Click here for spec sheet: UCFC Spec Sheet

Click here for spec sheet: SUCSPX Spec Sheet

Our standard 700 Series - the heart of Boston Gear's speed reducer product line - has been serving many industries reliably for over 40 years