8G - Order key | B&R Industrial Automation

Gearbox type (e)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R gearboxes are available as angular planetary gearboxes, planetary gearboxes with a coaxial output shaft and with an output flange.

The gearbox type is specified with a letter (e) in the order key.

Gearbox type (e)

P

F

A

Planetary gearbox with output shaft

Planetary gearbox with output flange

Angular planetary gearbox

Series (ff)

8G

e

ff

-

ggg

hh

iii

k

l

mm

The gearboxes are divided into different series. The series is specified as a two-digit number (ff) in the order key.

Series (ff)
40, 45, 50, 55	60, 70, 75
Standard	Premium
Offers the perfect solution for most applications with an optimized price/performance ratio. The unique modular system allows a great variety with regard to gear ratio, flange, design and much more.	For applications that demand high precision. In addition to standard spur toothing, helical gearing, which runs even smoother and quieter, is also possible. The angular gearbox is also available with a hollow shaft through which cables, lines or material strands can be fed to save space. This additionally opens up new possibilities in machine design.

Size (ggg)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R gearboxes are available in different sizes.

The different sizes are distinguished by three numbers (ggg) in the order number. The larger these numbers, the larger the flange dimensions and power data of the respective gearbox.

8GP

Gearbox series	1-stage¹⁾	2-stage¹⁾	3-stage¹⁾
8GP40	040, 060, 080, 120	040, 060, 080, 120	040, 060, 080, 120
8GP45	067, 089, 121	067, 089, 121	067, 089, 121
8GP50	050, 070, 090, 120.155	050, 070, 090, 120.155	---
8GP55	060, 080, 120	060, 080, 120	---
8GP60	070, 090, 115, 142, 190	070, 090, 115, 142, 190	---
8GP70	070, 090, 115, 142, 190	070, 090, 115, 142, 190	---

8GF

Gearbox series	1-stage¹⁾	2-stage¹⁾	3-stage¹⁾
8GF40	064, 090, 110	064, 090, 110	---
8GF60	064, 090, 110, 140, 200	064, 090, 110, 140, 200	---
8GF70	064, 090, 110, 140, 200	064, 090, 110, 140, 200	---

8GA

Gearbox series	1-stage¹⁾	2-stage¹⁾	3-stage¹⁾
8GA40	040, 060, 080, 120	040, 060, 080, 120	040, 060, 080, 120
8GA45	067, 089, 121	067, 089, 121	067, 089, 121
8GA50	050, 070, 090, 120	050, 070, 090, 120	---
8GA55	064, 090, 110	064, 090, 110	---
8GA60	070, 090, 115	070, 090, 115, 142	---
8GA75	070, 090, 115.142	---	---

1)	1-stage, 2-stage or 3-stage: Defined by the selected gear ratio.

Variants (hh)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R gearboxes are available with various lubrications.

The different versions are distinguished by two characters (hh) in the order number.

Design code	Variant	Availability
--	Standard	All gearboxes
-F	Food-safe lubrication H1-compliant Same properties as standard lubrication	All gearboxes
-L	Low-temperature lubrication T_min = - 40°C Optimal operating temperature: Maximum 50°C	Not available for 8GA60 / 8GA75

Gear ratio (iii)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R gearboxes are available with different gear ratios.

The code (iii) in the order number contains the gear ratio.

8GP

Gearbox series	1-stage:	2-stage:	3-stage:
8GP40	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	060, 080, 120, 160, 200, 256, 320, 512
8GP45	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	060, 080, 120, 160, 200, 256, 320, 512
8GP50 8GP50-155	003, 004, 005, 007, 008, 010 004, 005, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100 016, 020, 025, 040, 050, 100	--- ---
8GP55	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	---
8GP60	003, 004, 005, 007, 008, 010	012, 015, 016, 020, 025, 032, 040, 064, 100	---
8GP70	003, 004, 005, 007, 010	012, 015, 016, 020, 025, 035, 040, 050, 070, 100	---

8GF

Gearbox series	1-stage:	2-stage:	3-stage:
8GF40	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	---
8GF60	004, 005, 007, 008, 010	016, 020, 025, 032, 040, 050, 064, 100	---
8GF70	004, 005, 007, 010	016, 020, 025, 035, 040, 050, 070, 100	---

8GA

Gearbox series	1-stage:	2-stage:	3-stage:
8GA40	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	060, 080, 120, 160, 200, 256, 320, 512
8GA45	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	060, 080, 120, 160, 200, 256, 320, 512
8GA50	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	---
8GA55	003, 004, 005, 007, 008, 010	009, 012, 015, 016, 020, 025, 032, 040, 064, 100	---
8GA60	004, 005, 008, 010	016, 020, 025, 032, 040, 050, 064, 100	---
8GA75	004, 005, 008, 010	---	---

Backlash (k)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R premium gearboxes are also available with reduced backlash.

Backlash is specified with a letter (k) in the order key.

	Availability
	S Standard backlash	R Reduced backlash
Standard 1)	Yes	---
Premium 2)	Yes	Yes

1)	Value "Max. backlash" is specified in the technical data.
2)	Premium gearboxes: 8GP60, 8GP70 / 8GA60, 8GA75 / 8GF60, 8GF70

Output shaft type (l)

8G

e

ff

-

ggg

hh

iii

k

l

mm

The shape of the output shaft is specified with a digit in the order key (l).

Flange output shaft

Code (I)	Gearbox series	Flange output shaft	Dowel pin hole
0	8GF40	Yes	Yes
0	8GF60 / 8GF70	Yes	No
5	8GF60 / 8GF70	Yes	Yes

Smooth shaft

Code (I)	Gearbox series	Smooth shaft
1	8GA.. / 8GP..	Yes

Keyed shaft
(per DIN 6885)

Code (I)	Gearbox series	Keyed shaft (per DIN 6885)
2	8GA.. / 8GP..	Yes

Toothed shaft
(per DIN 5480)

Code (I)	Gearbox series	Toothed shaft (per DIN 5480)
4	8GP60 / 8GP70	Yes

Hollow shaft

Code (I)	Gearbox series	Hollow shaft (one side)	Hollow shaft (two sides)
6	8GA75	Yes	---
7	8GA75	---	Yes

Motor mounting (mm)

8G

e

ff

-

ggg

hh

iii

k

l

mm

B&R gearboxes perfectly match the extensive B&R portfolio of synchronous and stepper motors.

The motor mounting is specified with two characters in the order key (mm).

The code (mm) for the suitable mounting flange – for motor mounting – must be determined from the following table.

Example:
8LVA servo motor, motor size 2
1st character = V
2nd character = 2 (motor size)
Code (mm) = V2

Servo motors		1st character	2nd character
8LVA		V	1, 2 or 3 (motor size)
8LWA		V	1, 2 or 3 (motor size)
8LS	8LSAA	J	3
	8LSA5A/8LSC5A	L	5
	8LSA5B/8LSC5B	O	5
	8LSA5C/8LSC5C	O	5
	8LSA76/77/78 and 8LSC76/77/78	Q	7
	8LSA85/8LSA86	M	8
	All other 8LSA / 8LSC	L	2, 3, 4, 5, 6, 7 or 8 (motor size)
	8LSN	N	4 or 5 (motor size)
8JSA		J	2, 3, 4, 5, 6 or 7 (motor size)

Stepper motors	1st character	2nd character
80MPD (flange 56 mm = NEMA 23)	P	D
80MPF (flange 60 mm = NEMA 23)	P	F
80MPH (flange 86 mm = NEMA 34)	P	H

ACOPOSmotor	1st character	2nd character
8DI3x0...	V	3
8DI4x0...	L	4
8DI5x0...	L	5

ACOPOSmotor Compact		1st character	2nd character
8D1A2...		V	2
8D1A3...		V	3