Standard and special design pinions


A small stock range of Module 5, 6 and 8 metric, pilot bore pinions is held that suits the majority of light series slewing rings and applications.

A similar range of gears is being introduced for our FEG & FIG 20-61 Series imperial slewing ring range.

Pinions for high torque applications or large module slewing rings are generally designed and made to order.

Large slewing ring gears sometimes include and addendum modification factor which must be properly matched by the pinion for an efficient mesh. NBC uses some of the best software available to ensure we offer you the best solution.

In conjunction with gearbox and motor manufacturers we are able to offer complete solutions, be they electrically or hydraulically powered.


Stock pinions for FEG/SEG and FIG/SIG 20 Series Metric size slewing rings

PartGear dataDimensions (mm)
# teethModPCDGFWLTBODBossBoreKey
M5 Z12125605075704516PB
M5 Z13135655075755016PB
M5 Z14145705075805520PB
M5 Z15155755075856020PB
M5 Z16165805075906520PB
M5 Z17175855075957020PB
M5 Z181859050751007020PB
M5 Z191959550751057020PB
M6 Z12126726080845420PB
M6 Z14146846080966520PB
M6 Z151569060801027020PB
M6 Z161669660801087520PB
M6 Z1818610860801208020PB
M6 Z2020612060801329020PB
  • Stock pinions C45 - suitable for general industrial applications
  • Made to order in 42CrMo4 for high torque applications
  • Bore and key machining can be arranged to suit any gearbox/motor shaft / Stock sizes all PB = Pilot Bore
  • Larger sizes made to order

Stock pinions for FEG and FIG 20-61 Series Inch size slewing rings

PartAlt. partGear dataDimensions & Tolerance (in)Weight
# teethDPPCDGFWLTBODBossBoreKey(lbs)
± 0.015± 0.015± +0/-0.010±+0/+0.002
DP4 Z14 PB392000011443.5002.0002.8803.9002.8801.0001/46.400
DP4 Z17 PB392000021744.2502.0002.8804.6503.6301.00010.000
DP3 Z14 PB392000031434.6672.0002.8805.2003.8801.2505/1611.400
DP3 Z17 PB392000041735.6672.0002.8806.2004.8801.25018.300

Involute stub gears with 20° pressure angle

Material: 42CrMo4

Keyway to BS46 Part 1:1958 Square keys

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