Planetary Speed Reducers

Best Value

Onvio's value planetary, AL , provides designers with an economical, precision planetary gearbox that is perfect for today's stepper and emerging low cost servo motors. The design incorporates single or two stages of planetary gearing to create four frame sizes with rated torque from 6 Nm up to 100 Nm.

Gearboxes are produced with less than 12 arc minutes of backlash in a single stage and less than 15 arc minutes in a two stage gearbox. The AL reducer is available in eight standard ratios from 3:1 to 100:1. The cylindrical housing is supplied with either face mounted holes or a square NEMA flange making it a versatile gearbox for global installation.

Select Onvio's AL gearbox when your requirements call for an economical precision gearbox.

Size			AL-005		AL-010				AL-020				AL-030
Housing Ø	B		50		70				90				120
Pilot Ø	A	h6	35		52				68				90
Output Shaft Ø	D	k6	12		16				22				32
Mounting Bolt Circle	BG		44		62				80				108
Mounting Holes	CG	4x90°	M4		M5				M6				M8
Shoulder Ø	AS		17		25				40				50
Shaft Length from Mount Face	E		24.5		36				46				70
Output Shaft Length	E‘		18		28				36				58
Pilot Length	F		4		5				5				6
Thickness	F‘		6.5		8				10				12
Thread Depth	L		8		10				12				16
Keyway Length	T		14		22				32				50
Keyway Position	Q		2		3				2				4
Height with Key	U		13.5		18				24.5				35
Key Width	S	h9	4		5				6				10
Thread Size	M		M4		M5				M8				M12
Thread Depth	N		8		10				13				28
Reducer Body Length	K	1 stage	48		69				84				103.5
		2 stage	64		90				110				136
Motor Interface Dimensions			A	B	A	D	B	E	A	D	B	E	A	D	B	E
Maximum Motor Pilot Ø	C		52	62	62		81		81		101		112		131
Maximum Pilot Length	G		4		4	5	6		4		4		6	6	6
Square Flange	H		55	70	70		90		90		120		120		150
Bolt Circle for Motor	BM		55-63	63-75	63-75		85-100		85-100		115-130		115-130		145-165
Mounting Holes	CM		5.3	5.3	5.3	5.3	6.6	6.6	6.4	6.4	8.5	8.5	8.5	8.5	8.5	11
Flange Thickness	V		20	25	16.5	19.5	19.5	30	20	25	25	35	26	34	36	44
Maximum Motor Shaft Length	J		25	30	16.5	19.5	19.5	30	24	29	29	39	26	34	36	44
Minimum Motor Shaft Length	J		18	23	27	30	30	40	35	40	40	50	42	50	52	60
Maximum Motor Shaft Ø	R		14		16			24				32
Position of Access Hole	W		6		7			8				10

NEMA Dimensions

Size

NEMA 17

NEMA 23

NEMA 34

NEMA 42

Square Flange

B

2.13

2.99

3.78

5.00

Pilot Ø

A

h6

0.867

1.500

2.875

2.185

Output Shaft Ø

D

k6

0.472

0.630

0.866

1.26

Mounting Bolt Circle

BG

1.725

2.625

3.875

4.95

Mounting Holes

CG

0.126

0.204

0.22

0.283

Shaft Length from Mount Face

E

0.689

1.122

1.575

2.256

Output Shaft Length

E‘

0.591

1.06

1.417

2.194

Pilot Length

F

0.098

0.062

0.158

0.062

Flange thickness

L

0.18

0.20

0.24

0.5

Keyway Length

T

0.551

0.866

1.26

1.969

Keyway Position

Q

0.079

0.118

0.079

0.157

Height with Key

U

0.531

0.708

0.965

1.378

Key Width

S

h9

0.157

0.197

0.236

0.394

Thread Size

M

M4

M5

M8

M12

Thread Depth

N

0.315

0.394

0.512

0.866

Reducer Body Length

K

1 stage

2.95

3.69

3.54

4.58

2 stage

3.58

4.54

4.57

5.85

Motor Interface Dimensions

Maximum Motor Pilot Ø

C

1.259

1.535

2.875

2.185

Square Flange

H

2.165

2.756

3.543

4.724

Bolt Circle for Motor

BM

1.725

2.625

3.875

4.95

Mounting Holes

CM

(4) #4-40 UNC

(4) #10-32 UNC

(4) 1/4-20 UNC

(4) 1/4-20 UNC

Flange Thickness

V

0.79

0.2

0.24

0.5

Maximum Motor Shaft Length

J

0.985

0.945

1.377

1.653

Minimum Motor Shaft Length

J

0.708

0.708

0.945

1.023

Maximum Motor Shaft Ø

R

0.551

0.629

0.945

1.259

Position of Access Hole

W

0.236

0.275

0.315

0.394

AL Ratings			AL-005		AL-010		AL-020		AL-030
		Ratio	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)
		3:1	NA	NA	22	44	40	80	100	200
		5:1	6	12	22	44	40	80	100	200
		10:1	5.5	11	20	40	37	74	90	180
		15:1	NA	NA	22	44	40	80	100	200
		25:1	6	12	22	44	40	80	100	200
		30:1	6	12	22	44	40	80	100	200
		50:1	6	12	22	44	40	80	100	200
		100:1	5.5	11	20	40	37	74	90	180
Backlash	arc min	1 stage	≤ 12		≤ 12		≤ 12		≤ 12
		2 stage	≤ 15		≤ 15		≤ 15		≤ 15
		3:1	NA		3.3		9		24
Torsional Stiffness		5:1	0.9		3.3		9		24
Nm/arc min		10:1	0.75		2.8		7.5		20.5
		15:1	NA		3.3		9		24
		25:1	0.9		3.3		9		24
		30:1	0.9		3.3		9		24
		50:1	0.9		3.3		9		24
		100:1	0.75		2.8		7.5		20.5
Continuous Input Speed	RPM		4000		3700		3400		2600
Maximum Input Speed	RPM		8000		6000		6000		4800
Maximum Radial Load	N		650		1450		2400		4600
Maximum Axial Load	N		700		1550		1900		4000

Efficiency	%	1 stage	> 97
		2 stage	> 95
Input Inertia	kgcm2	1 stage	0.06		0.29		1.73		5.5
		2 stage	0.05		0.26		1.48		4.6
Weight	kg	1 stage	0.75		1.7		4		8.8
		2 stage	0.92		2.1		4.9		10.9
Noise Level	dB (A)	Measured @ 3000 rpm	≤ 69		≤ 70		≤ 72		≤ 74
Life	h	20,000
Lubrication		Grease
Orientation		Any

NEMA Ratings

			NEMA-17		NEMA-23		NEMA-34		NEMA-42
		Ratio	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)	Rated(TN)	Peak(TP)
	Lb-In	3:1	NA	NA	195	390	354	708	885	1770
		5:1	53	106	195	390	354	708	885	1770
		10:1	49	97	177	354	327	654	797	1594
		15:1	NA	NA	195	390	354	708	885	1770
		25:1	53	106	195	390	354	708	885	1770
		30:1	53	106	195	390	354	708	885	1770
		50:1	53	106	195	390	354	708	885	1770
		100:1	49	97	177	354	327	654	797	1594
Backlash	arc min	1 stage	≤ 12		≤ 12		≤ 12		≤ 12
		2 stage	≤ 15		≤ 15		≤ 15		≤ 15
		3:1	NA		29.2		79.6		212
Torsional Stiffness		5:1	7.16		29.2		79.6		212
lb in/arc min		10:1	6.64		24.8		66.4		177
		15:1	NA		29.2		79.6		212
		25:1	7.16		29.2		79.6		212
		30:1	7.16		29.2		79.6		212
		50:1	7.16		29.2		79.6		212
		100:1	6.64		24.8		66.4		177
Continuous Input Speed	RPM		4000		3700		3400		2600
Maximum Input Speed	RPM		8000		6000		6000		4800
Maximum Radial Load	lb		150		326		540		613
Maximum Axial Load	lb		157		350		427		900

Efficiency	%	1 stage	> 97
		2 stage	> 95
Input Inertia	kgcm2	1 stage	5.3x10^-5		2.57x10^-4		1.53x10^-3		4.87x10^-3
		2 stage	4.42x10^-5		2.30x10^-4		1.31x10^-3		4.07x10^-3
Weight	lb	1 stage	1.65		3.74		8.80		19.36
		2 stage	2.02		4.62		10.78		23.98
Noise Level	dB (A)	Measured @ 3000 rpm	≤ 69		≤ 70		≤ 72		≤ 74
Life	h	20,000
Lubrication		Grease
Orientation		Any

For Bearing Ratings, please call (866) 685-0404.