Skip to content Skip to navigation menu
Change Gear

GB81B

Change Gear
Item #101783977
  • Cast Iron Material
  • 81 Teeth
  • 16 Diametral Pitch
  • 5.19 in Outside Diameter
  • 14.5 Pressure Angle
Change Gear
Price Unavailable
Price Unavailable
Pricing is unavailable at this time. Please contact Customer Service for assistance.
Online Ordering Restricted
Please contact Customer Service for assistance.
Contact Customer Service
    Shipment Options
  • Cast Iron Material
  • 81 Teeth
  • 16 Diametral Pitch
  • 5.19 in Outside Diameter
  • 14.5 Pressure Angle

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.
Pitch Dia. 5.063 in
Torque at 900 RPM 116 lb/in
Bore Size 0.75 in
Length Through Bore 1 in
Face Width 0.5 in
Pitch Diameter 5.063 in
Torque at 200 RPM 240 lb/in
O.D. 5.19 in
Material Cast Iron
Set Screw None
Outside Dia. 5.19 in
Pressure Angle 14 1/2 degrees
Hub Dia. 1.81 in
Torque at 1200 RPM N/A
Diametral Pitch 16
No. of Teeths 81
Torque at 600 RPM 149 lb/in
Rated Torque [Max] 150 @ 600 rpm
Hardened Teeth Without Hardened Teeth
Keyway Double Keyway 180° Apart
Bore Dia. 0.75 in
Bushing Series Ga
Torque at 300 RPM 208 lb/in
No. of Teeth 81
Torque at 1800 RPM N/A
Weight 1.301 LB
EAN or UPC 781711110225
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison