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GB123A BOS

Boston Gear® GB123A GB Series Web with Lightning Hole Change Gear With Double Keyway, 16 Pitch, 14.5 deg Angle, 1/2 in Face W, 123 Teeth, 7.688 in Pitch Dia, 3/4 in Bore Dia, Cast Iron
Manufacturer: Boston Gear
Manufacturer part number: GB123A
Availability: Ships in 3-5 days.
Estimated dates are contingent upon manufacturer stock.
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$170.55

Product Details

Brand Name

Boston Gear®

Type

Web with Lightning Hole

Description

Boston 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 nearly infinite number of ratio possibilities. Be sure to ask for the Boston Gear® compound steel bushings designed specifically for use with these gears.
Boston Gear® Change Gear With Double Keyway, Web with Lightning Hole, Series: GB Series, 3/4 in Bore Dia, 7.81 in Outside Dia, 123 Teeth, 16 Diametral Pitch, 7.688 in, 1/2 in Face Width, 1.81 in Hub Dia, 14.5 deg Pressure Angle, 3/16 x 3/32 in Keyway, Cast Iron

Application

For parallel shaft applications

Standards

PROP65: This product contains lead, known to the State of California to cause cancer and birth defects or other reproductive harm.

Features

  • 14.5 deg pressure angle will not operate with 20 deg spurs
  • More cost effective, quieter running and corrosion resistant operation
  • Higher contact ratio for a smoother, quieter operation with 14.5 deg pressure angle

Specifications

Bore Diameter:3/4 in
Country of Origin:US
Diametral Pitch:16
Face Width:1/2 in
Hub Diameter:1.81 in
Keyway Size:3/16 x 3/32 in
Material:Cast Iron
Number of Teeth:123
Outside Diameter:7.81 in
Pitch Diameter:7.688 in
Pressure Angle:14.5 deg
Series:GB Series