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.

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.

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.

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

Tooth Style	Part Number	Module	Number of Teeth	Working Diameter (mm) *
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.

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

Tooth Style	Part Number	Module	Number of Teeth	Working Diameter (mm) *
Straight	78.23.824	2	24	48.81
Straight	78.33.820	3	20	60.48
Straight	78.43.813	4	13	54.93
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	78.21.533 + 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	78.33.916	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.

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

Tooth Style	Part Number	Module	Number of Teeth	Working Diameter (mm) *
Straight	78.44.821	4	21	84.88
Straight	78.54.819	5	19	95.49
Straight	78.64.816	6	16	95.49
Helical	78.34.919	3	19	60.48
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	78.44.917	4	17	72.15
Helical	78.44.919	4	19	81.52
Helical	78.44.920	4	20	84.88
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	78.64.915	6	15	95.49

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

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

Tooth Style	Part Number	Module	Number of Teeth	Working Diameter (mm) *
Straight	78.56.820	5	20	100.80
Straight	78.66.817	6	17	113.90
Helical	78.56.918	5	18	95.49
Helical	78.56.919	5	19	100.80
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.

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

Tooth Style	Part Number	Module	Number of Teeth	Working Diameter (mm) *
Straight	78.87.813	8	13	109.86
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.