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ISO 9409-1-A Flanged Pinions

ISO 9409-1-A Flanged Pinions

We have recently expanded our range of ISO 9409-1-A flanged pinions.  This allows the machine designer the flexibility of choosing the best flanged pinion to meet the application needs.

The new TR flanged pinions have compact designs to reduce the amount of drive torque required.  Traditionally, flanged pinions have large pitch diameters which increase the amount of torque on the reducer they mount to.

With the new TR Pinion range, the pinion pitch diameters are significantly smaller, reducing the drive torque required and allowing a smaller reducer to be used.  The pinions are easily mounted and replaceable if future repair is needed.

This hardened & ground pinion range has a quality level of DIN 5 and is available in straight (spur) and helical-toothed versions, in metric modules 2.0 through 8.0.  The pinions can mount to any reducers with ISO 9409-1 flanged connections, see table below.



Advantages of Using Small Pinions:  When it comes to selecting a pinion for use in a rack & pinion drive system, the pinion diameter has a huge effect on the system, including the gearbox torque, size, ratio, linear backlash, linear stiffness and resonant frequency of the system.

ISO Interface ATLANTA HT Alpha TP Stober PH Apex Neugart PLF
A-31.5 --- TP 004 PH3 AD 064 PLF 64
A-40 98.83.XXX --- --- --- ---
A-50 98.84.XXX TP 010 PH4 AD 090 PLF 90
A-63 98.85.XXX TP 025 PH5 AD 110 PLF 110
A-80 98.86.XXX TP 050 PH7 AD 140 PLF 140
A-125 --- TP 110 PH8 AD 200 ---
A-140 --- TP 300 PH9 AD 255 ---
A-160 --- TP 500 PH10 --- ---

The combination of the TR pinions, with their low inertia and high accuracy, used with ATLANTA’s precision gear racks, make it possible to achieve very highly dynamic axis drives with high precision and repeatability.

Below is a list of the various ISO interfaces and the pinion sizes available.  For a PDF catalog on the part, please click on the part number.

A-31.5 Interface (20 mm Pilot, 31.5 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Helical 78.20.526 2 26 55.20
Helical 78.20.527 2 27 57.29
Helical 78.20.529 2 29 61.54
Helical 78.20.535 2 35 74.30

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-40 Interface (25 mm Pilot, 40 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Helical 78.25.529 2 29 61.54

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-50 Interface (31.5 mm Pilot, 50 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.21.813 2 13 27.47
Straight 78.21.817 2 17 33.95
Helical 78.21.912 2 12 27.46
Helical 78.21.916 2 16 33.95
Helical 78.20.526 + 265.78.001 2 26 55.20
Helical 78.20.527 + 265.78.001 2 27 57.29
Helical 78.20.529 + 265.78.001 2 29 61.54
Helical 78.21.533 2 33 70.00
Helical 78.20.535 + 265.78.001 2 35 74.30
Helical 78.20.536 2 36 76.39
Helical 78.21.537 2 37 78.50
Helical 78.31.531 3 31 98.70

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-63 Interface (40 mm Pilot, 63 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.22.813 2 13 27.47
Straight 78.22.817 2 17 33.95
Straight 78.22.824 2 24 48.81
Straight 78.32.813 3 13 41.20
Helical 78.22.912 2 12 27.46
Helical 78.22.919 2 19 40.32
Helical 78.22.923 2 23 48.81
Helical 78.20.526 + 265.78.002 2 26 55.20
Helical 78.20.527 + 265.78.002 2 27 57.29
Helical 78.20.529 + 265.78.002 2 29 61.54
Helical 78.20.535 + 265.78.002 2 35 74.30
Helical 78.22.540 2 40 84.90
Helical 78.22.545 2 45 95.50
Helical 78.32.912 3 12 41.20
Helical 78.32.914 3 14 46.36
Helical 78.30.530 3 30 95.49

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-80 Interface (50 mm Pilot, 80 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.23.813 2 13 27.47
Straight 78.23.824 2 24 48.81
Straight 78.33.813 3 13 27.47
Straight 78.33.820 3 20 60.48
Straight 78.43.813 4 13 54.93
Straight 78.43.814 4 14 59.17
Helical 78.23.912 2 12 27.46
Helical 78.23.923 2 23 48.81
Helical 78.20.526 + 265.78.001
+ 265.78.003
2 26 55.20
Helical 78.20.527 + 265.78.001
+ 265.78.003
2 27 57.29
Helical 78.23.929 2 29 61.54
Helical 78.21.533 + 265.78.003 2 33 70.00
Helical 78.20.535 + 265.78.001
+ 265.78.003
2 35 74.30
Helical 78.20.536 + 265.78.003 2 36 76.39
Helical 78.21.537 + 265.78.003 2 37 78.50
Helical 78.33.912 3 12 41.20
Helical 78.33.916 3 16 50.93
Helical 78.33.917 3 17 54.11
Helical 78.33.919 3 19 60.48
Helical 78.31.531 + 265.78.003 3 31 98.70
Helical 78.33.535 3 35 111.40
Helical 78.33.540 3 40 127.30
Helical 78.43.912 4 12 54.93
Helical 78.40.530 4 30 127.32
Helical 78.50.521 5 21 111.40

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-125 Interface (80 mm Pilot, 125 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.34.813 3 13 27.47
Straight 78.34.820 3 20 60.48
Straight 78.44.813 4 13 54.93
Straight 78.44.820 4 20 81.52
Straight 78.44.821 4 21 84.88
Straight 78.44.824 4 24 97.61
Straight 78.54.813 5 13 68.66
Straight 78.54.819 5 19 95.49
Straight 78.64.813 6 13 82.40
Straight 78.64.814 6 14 88.76
Straight 78.64.816 6 16 95.49
Helical 78.34.912 3 12 41.20
Helical 78.34.919 3 19 60.48
Helical 78.34.925 3 25 79.58
Helical 78.34.926 3 26 82.76
Helical 78.31.531 + 265.78.003
+ 265.78.004
3 31 98.70
Helical 78.34.932 3 32 101.86
Helical 78.33.535 + 265.78.004 3 35 111.40
Helical 78.33.540 + 265.78.004 3 40 127.30
Helical 78.44.912 4 12 54.93
Helical 78.44.915 4 15 63.66
Helical 78.44.916 4 16 67.91
Helical 78.44.917 4 17 72.15
Helical 78.44.919 4 19 81.52
Helical 78.44.920 4 20 84.88
Helical 78.44.923 4 23 97.62
Helical 78.40.530 + 265.78.004 4 30 127.32
Helical 78.54.912 5 12 68.66
Helical 78.54.916 5 16 84.88
Helical 78.54.918 5 18 95.49
Helical 78.50.521 + 265.78.004 5 21 111.40
Helical 78.50.536 5 36 190.98
Helical 78.64.912 6 12 94.40
Helical 78.64.913 6 13 88.76
Helical 78.64.915 6 15 95.49

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-140 Interface (180 mm Pilot, 140 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.46.813 4 13 54.93
Straight 78.46.820 4 20 81.52
Straight 78.46.821 4 21 84.88
Straight 78.56.815 5 15 77.27
Straight 78.56.820 5 20 100.80
Straight 78.66.813 6 13 82.40
Straight 78.66.817 6 17 113.90
Helical 78.46.912 4 12 54.93
Helical 78.46.919 4 19 81.52
Helical 78.46.920 4 20 84.88
Helical 78.56.914 5 14 77.27
Helical 78.56.918 5 18 95.49
Helical 78.56.919 5 19 100.80
Helical 78.66.912 6 12 82.39
Helical 78.66.915 6 15 95.49
Helical 78.66.916 6 16 101.86

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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A-160 Interface (200 mm Pilot, 160 mm Bolt Circle):

Tooth Style Part Number Module Number of Teeth Working Diameter (mm) *
Straight 78.57.813 5 13 68.66
Straight 78.57.820 5 20 100.80
Straight 78.67.813 6 13 82.40
Straight 78.67.817 6 17 113.90
Straight 78.67.819 6 19 114.59
Straight 78.87.813 8 13 109.86
Helical 78.57.912 5 12 68.66
Helical 78.57.919 5 19 100.80
Helical 78.67.912 6 12 82.39
Helical 78.67.916 6 16 101.86
Helical 78.87.912 8 12 109.86

* The working diameter is the diameter the pinion meshes at and may be slightly larger than the pitch diameter.

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