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P R E C I S I O N
P L A N E T A R Y
G E A R H E A D S
CATALOG -M 205 A
P R E C I S I O N
P L A N E T A R Y
G E A R H E A D S
MIJNO PRECISION GEARING. :
A reliable and growing company
MIJNO PRECISION GEARING. :
Our goal is to provide you with high quality products and service at competitive prices.
MIJNO PRECISION GEARING’S expertise can be
categorized as three complementary lines of
business: Precision Planetary Gearheads,
Precision Rack & Pinion sets, and Built-to-Print
Custom Gearing.
François MIJNO,
Managing Director
PRECISION PLANETARY GEARHEADS
Specifically designed to be attached to numerous
types of electric motors (servo, brushless and stepper), Mijno Precision Planetary Gearheads are marketed and employed worldwide in markets that
include the aircraft and aerospace industry, factory
automation, special machinery and robotics.
Why choose Precision Planetary Gearheads ?
- Planetary gears offer the advantage of very high
power transmission capabilities per unit volume of
space and weight.
- Gearheads perform the important function of reducing speed and multiplying torque.
- Inertial loads can be “matched” to enable servomotors to do their job.
- Low backlash facilitates the need for precise positioning in automation applications.
- Low backlash also reduces shock loads in dynamic
reversing applications.
- Planetary gearheads have high mechanical efficiency.
MIJNO planetary gearheads are designed and
manufactured to perform the above tasks efficiently,
quietly and reliably.
Because servomotors vary widely in their mounting
dimensions, MIJNO custom machines the gearhead
input flanges to match the customer’s motor. Our
customers are also able to choose the precision level
of backlash for most of the gearhead families.
2
As a flexible manufacturer, the MIJNO R&D department welcomes inquiries for modified or special gearheads. Due to a recent significant increase in this
field, MIJNO has created a specific section dedicated
to the development of special purpose gearheads.
Each MIJNO low-backlash gearhead family is AllPlanetary, offers 2 to 7 diameters, and up to four
stages of gearing. The families have different design
strategies for different applications and markets.
RACKS & PINIONS
- Racks dedicated for translation of loads: standard
application. Precision level suitable for quiet and
high speed translation.
- Racks designed for precision measurement and
translation of loads. Precision level suitable for
measuring or positioning applications requiring
high accuracy and quietness.
Owing to more than 80 years of experience in the
design and manufacture of power transmission components, Mijno offers precision and quality racks &
pinions. The use of selected alloy steels, and rigorous
processing controls, enable our company to supply
racks & pinions to technologically advanced sectors.
Our engineers are able to assist you with the best
solution by studying your application and selecting
the best size of teeth, hardness and precision level.
Our goal is to provide you with racks and pinions
that transmit power smoothly and quietly, beyond
rated life, at economical cost.
INTEGRATED POWER TRANSLATION
PACKAGES
MIJNO offers a complete “package” of gearheadspinions-racks. We can securely fasten the rack pinion
on the gearhead shaft upon request. Holes in the
rack for mounting in your machine can be supplied.
The particularly quiet and precise running of these
sets is ensured by :
- The use of precision ground teeth in our gearheads
according to ISO class 4 to 5 accuracy.
- Rack pinions with ground teeth having a proprietary modification of the tooth profile called
“Rotaxe”. This improves smoothness and reduces
wear.
- Manufacturing of racks with straight or helical
teeth, ground or not, according to specification
Mij-12024. This modern tooth profile was especially developed for high speed applications.
BUILT-TO-PRINT COMPONENTS with GEAR
FEATURES
Involvement in this highly competitive business area
has always enabled MIJNO to be on the cutting edge
of progressive and growing technologies.
Our wide range of manufacturing equipment and the
expertise of our workforce have made us a leader
and dependable partner to many industries requiring gear features on their components.
Discover Mijno / Company Overview
2
MRL gearheads
MNA gearheads
MRP gearheads
4
6
8
We routinely manufacture to a precision level of AGMA
12 to 13 (DIN or ISO 4 to 5). The range of tooth sizes
is DP 127 to 2 (metric module 0.2 to 12)
TYPES OF GEARING PRODUCED
- Rack (linear gearing) and Pinions.
- Bevel Gear Sets.
- Worms and Worm Gears.
- Splined Shafts and Splined Holes
- Parallel Axis Internal and External Tooth Gearing
MNT gearheads
MSS
10
MRA gearheads
MRS
12
BDB gearheads
14
The MIJNO advantages
- ‘Integrated power
translation package
- ‘Special purpose’
gearheads
Notation : Most numerical data in the tables and
drawings of this catalog employ commas instead of
periods to denote decimal points.
16
LUBRICATION
WHY CHOOSE MIJNO ?
TABLE OF CONTENTS
18
3
MRL LINE
• Medium duty economy series, frequently used with
stepper motors or low power servomotors.
• Backlash of 30 arc-mins maximum.
• Steel center housing with aluminum end housings.
• Grease lubricated.
• Output shaft is supported by two radial groove ball
bearings.
• Gears are cut steel. Ring gear is integral to the
center housing.
• Cantilevered planet (satellite) gear support construction.
• Planet gears rotate on sleeve bearings.
• Input gears are secured to the motor shaft
using Loctite™ technology (assembly instructions
downloadable).
• Standard ratios from 3/1 to 515/1 (1 to 4 stages).
• Life rating of 10,000 hours at rated load and
operating conditions.
• Two sizes cataloged : 2.17 & 2.87 inches
(55 & 73 mm) diameter.
4
The torque values shown for each size
are maximums for their higher ratios
– for lower ratios, torque ratings may
be 50-90% less – for specific torque
ratings vs. ratio, see our detailed
Characteristic (data) sheets for chosen
sizes. The Characteristics/Data sheets
also contain additional data on reflected
inertia, radial and axial loads, etc. Data
sheets can be emailed or faxed upon
request.
GEARHEAD DIMENSIONS
E
G
øH
R
øCxM
øB
F
ØA
mm
32h8
50j7
MRL 200
MRL 300
ØH
mm
55
73
MRL 200
MRL 300
(in)
(2.17)
(2.87)
mm
40
65
G(1)
OUTPUT VIEW
K
ØB
(in)
(1.260)
(1.969)
øA
INPUT
VIEW
øD
N
P
C
(in)
(1.575)
(2.559)
mm
M5
M5
ØD
mm
12j6
19h7
K
mm
(in)
axial threaded hole
45-90 (1.77-3.54) DIN 332-D M4
69-106 (2.72-4.17) DIN 332-D M5
E
(in)
(0.472)
(0.748)
M
mm
7
7
mm
25
40
F
(in)
(0.98)
(1.57)
R
(in)
(0.28)
(0.28)
mm
20
30
mm
3
3
(in)
(0.118)
(0.118)
N
(in)
(1.79)
(1.18)
mm
2,5
3,5
P
(in)
(0.098)
(0.138)
mm
4
6
(in)
(0.157)
(0.236)
1. Depends upon No. of gear stages and motor dimensions.
MRL 200
MRL 300
rpm
3000/6000
3000/6000
Rated Output Torque
Nm/Lb.in
24/210
45/380
Accel Output Torque
Nm/Lb.in
35/310
65/575
Input speed - Rated/Max
1)
Gear ratio
(see i = below)
i
Group A
Group B
Efficiency
(1 stage/2 stages/3 stages/4 stages)
%
89/80/71/62
89/80/71/62
2)
Maximum Backlash
arc-mins
30
Rated Life
h
10 000
Operating Temperature Range
°C
-20/+80
°F
-4/+176
Sound level
dB (A)
≤ 66
MRL
PERFORMANCE DATA
≤ 68
1) S5 Duty service 2) Gearhead efficiency at full load.
RATIO GROUP A : 1 stage, i = 4,4 - 5,1...................2 stages, i = 10,4 - 20,1 - 26,5......................3 stages, i = 40,7 - 64,8 - 116,7 .............................4 stages, i = 158,8 - 236,8 - 285,9 - 402,3 - 514,8
RATIO GROUP B : 1 stage, i = 4 - 5 - 7 ...................2 stages, i = 12 - 16 - 20 - 25 .......................3 stages, i =48 - 60 - 80 - 100 - 125 ......................4 stages, i = 144 - 180 - 192 - 240 - 300 - 400
Please inquire for any ratio not shown.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
5
MNA LINE
• High duty servo grade. A most rugged NEMA type.
• Backlash of 20 and 10 arc-mins max on larger sizes.
Size 17 is medium backlash.
• Standard geometry of the input side assumes NEMA
dimensioned stepper or servo motors (with standard
or optional larger diameter shafts).
• Can be special ordered to be mountable to nonNEMA motors.
• All steel construction with ring gear integral in housing.
• Unibloc (one-piece of steel) output shaft and planet
gear carrier rotates on ball bearings.
• Planet gears are double supported in carrier and
rotate on needle bearings.
• Precisely cut gears are case hardened and grease
lubricated.
• Separable input pinion clamps onto motor shaft-easy
to assemble.
• Standard ratios from 3/1 to 100/1.
• Life rating of 10,000 hours at rated load.
• NEMA sizes 17, 23, 34 and 42.
6
The torque values shown for each size
are maximums for their higher ratios
– for lower ratios, torque ratings may
be 50-90% less – for specific torque
ratings vs. ratio, see our detailed
Characteristic (data) sheets for chosen
sizes. The Characteristics/Data sheets
also contain additional data on reflected
inertia, radial and axial loads, etc. Data
sheets can be emailed or faxed upon
request.
GEARHEAD DIMENSIONS
G
H
R
øJ
F
OUTPUT VIEW
ØA
mm
22
38,15
73,03
55,55
MNA 17
MNA 23
MNA 34
MNA 42
ØB
(in)
mm
(0.866) 43,80
(1.502) 66,68
(2.875) 98,42
(2.187) 125,73
G1)
mm
38-57
68,5-85,5
104,5-140,5
141-224
MNA 17
MNA 23
MNA 34
MNA 42
øC
øB
N
øB
E
L
øC
øA
P
øD
H
(in)
(1.50-2.20)
(2.70-3.37)
(4.11-5.53)
(5.55-8.82)
C
(in)
(1.724)
(2.625)
(3.875)
(4.95)
mm
M3
5,20
5,50
7,20
ØD
(in)
(0.200)
(0.216)
(0.283)
H
mm
39
58
83
115
INPUT VIEW
mm
6
9,52
12,70
15,87
(in)
(0.236)
(0.375)
(0.500)
(0.625)
L
(in)
(1.53)
(2.28)
(3.27)
(4.53)
mm
6,5
5
10
13
ØJ
mm
22
38,18
73,03
55,58
E
(in)
(0.866)
(1.503)
(2.875)
(2.188)
mm
20
25,40
31,75
38,10
R
(in)
(0.25)
(0.20)
(0.39)
(0.51)
mm
19,05 flat
26,92
28,70
F
(in)
(0.78)
(1.00)
(1.25)
(1.50)
mm
3
1,57
1,57
2,36
N
(in)
(0.75)
(1.06)
(1.13)
mm
0,4 flat
1,78
2,79
(in)
(0.118)
(0.062)
(0.062)
(0.093)
P
(in)
(0.015)
(0.07)
(0.11)
mm
3,18
4,78
(in)
(0.125)
(0.188)
1. Depends upon No. of gear stages and motor dimensions.
PERFORMANCE DATA
Input speed - Rated/Max
MNA 23
MNA 34
MNA 42
rpm
3000
Rated Output Torque
Nm/Lb.in
4,5/40
7/65
30/265
60/530
Accel Output Torque
Nm/Lb.in
6,5/60
10/90
60/530
120/1060
i
Group A
Group B
Group C
Group D
%
80/70
arc-mins
120
h
3000
Gear ratio
1)
(see i = below)
Efficiency 2) (1 stage/2 stages)
Maximum Backlash
Rated Life
3)
Operating Temperature Range
Sound level
4000/6000
96/91
20
20 or 10
10 000
°C
-20/+80
°F
-4/+176
dB (A)
≤ 64
MNA
MNA 17
≤ 66
≤ 66
≤ 68
1) S5 Duty service 2) Gearhead efficiency at full load. 3) At rated input speed and rated output torque.
RATIO GROUP A : 1stage, i = 4 - 7......................................................2 stages, i = 14 - 25 - 46 ...........................................................3 stages, i = 51 - 93 - 169 - 308
RATIO GROUP B : 1stage, i = 4 - 5 - 7 - 10.........................................2 stages, i = 16 - 20 - 25 - 35 - 50 - 70 - 100
RATIO GROUP C : 1stage, i = 3 - 4 - 5 - 7 - 10....................................2 stages, i =16 - 20 - 25 - 35 - 70 - 100
RATIO GROUP D : 1stage, i = 3 - 4 - 5 - 7 - 10 ...................................2 stages, i =16 - 20 - 25 - 35 - 50 .............................................3 stages, i = 64 - 80 - 100 - 125 - 175
Please inquire for any ratio not shown.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
7
MRP LINE
• Economical range dedicated to servo-applications
requiring precision and robustness with economy.
• Backlash from 8 to 15 arc-mins. Backlash specification holds for rated gearhead life. Precisely cut satellite gears are case hardened, then precision ground
for smooth power transmission and quietness.
• The satellite gears rotate on needle bearings and are
cantilever supported on hardened and ground shafts.
• Assembly to your motor is quickly accomplished by
the integrated, self centering input pinion. A twoscrew clamping design secures it to the motor.
• Can be mounted to any motor appropriate for its
torque ratings. The price includes most adapter
flanges when needed.
• The output shaft is supported by two by two ball bearings. Output shafts are relatively large in diameter,
providing for stiffness and high radial load carrying
capacity. A keyway is standard.
• Maintenance free, grease lubrication.
• Output end mounting face features 8 threaded holes.
• Choose from 5 sizes. Standard ratios are 3 through
100/1 in one and two stages. 15,000 hours rated
life.
• Excellent performance to price ratio.
8
The torque values shown for each size
are maximums for their higher ratios
– for lower ratios, torque ratings may
be 50-90% less – for specific torque
ratings vs. ratio, see our detailed
Characteristic (data) sheets for chosen
sizes. The Characteristics/Data sheets
also contain additional data on reflected
inertia, radial and axial loads, etc. Data
sheets can be emailed or faxed upon
request.
GEARHEAD DIMENSIONS
øB
øCxM
G
E
P
øH
øD
øA
R
E’
N
OUTPUT VIEW
F
ØA
mm
35h6
52h6
68h6
90h6
120h6
MRP 050
MRP 070
MRP 090
MRP 120
MRP 155
ØB
(in)
(1.978)
(2.047)
(2.677)
(3.543)
(4.724)
ØH
mm
50
69
89
119
154
MRP 050
MRP 070
MRP 090
MRP 120
MRP 155
(in)
(1.969)
(2.716)
(3.504)
(4.685)
(6.063)
mm
44
62
80
108
140
G1)
mm
70/97
96/119
121/157
160/202
185/225
C
(in)
(1.732)
(2.441)
(3.149)
(4.252)
(5.511)
(in)
mm
(2.76/3.82) M4
(3.78/4.68) M5
(4.76/6.18) M8
(6.30/7.95) M12
(7.28/8.86) M16
mm
12k6
16k6
22k6
32k6
40k6
M
mm
8
10
12
15
20
INPUT VIEW
ØD
mm
M4
M5
M6
M8
M10
K
*
K DIN 332 D
E
(in)
(0.472)
(0.629)
(0.866)
(1.259)
(1.574)
mm
24,5
36
46
70
97
F
(in)
(0.31)
(0.39)
(0.47)
(0.59)
(0.79)
mm
4
5
5
6
8
E’
(in)
(0.965)
(1.417)
(1.811)
(2.755)
(3.818)
R
(in)
(0.16)
(0.20)
(0.20)
(0.24)
(0.31)
mm
16
25
32
50
60
mm
18
28
36
58
82
(in)
(0.709)
(1.102)
(1.417)
(2.283)
(3.228)
P
(in)
(0.63)
(0.98)
(1.26)
(1.97)
(2.36)
mm
4
5
6
10
12
N
(in)
(0.16)
((0.20)
(0.24)
(0.39)
(0.47)
mm
13,5
18
24,5
35
43
(in)
(0.53)
(0.71)
(0.96)
(1.38)
(1.69)
1. Depends upon No. of gear stages and motor dimensions.
MRP 050
MRP 070
MRP 090
MRP 120
MRP 155
rpm
4000/6000
4000/6000
3500/6000
3000/5000
2000/3500
Rated Output Torque
Nm/Lb.in
6/53
20/175
50/440
160/1415
290/2565
Accel Output Torque 1)
Nm/Lb.in
12/106
32/285
75/665
250/2210
400/3540
Group A
Input speed - Rated/Max
Gear ratio
(see i = below)
i
Efficiency
(1 stage/2 stages)
%
2)
Maximum Backlash
Rated Life
3)
Operating Temperature Range
Sound level
Group B
96 / 91
arc-mins
15 or 12
12 or 10 or 8
h
15 000
°C
-20 / +80
°F
-4 / +176
dB (A)
MRP
PERFORMANCE DATA
≤ 64
≤ 66
≤ 68
≤ 70
≤ 71
1) S5 Duty service 2) Gearhead efficiency at full load. 3) At rated input speed and rated output torque.
RATIO GROUP A : 1 stage, i = 4 - 5 - 7 - 10 ................................................2 stages, i = 16 - 20 - 25 - 28 - 35 - 40 - 49 - 50 - 70 - 100
RATIO GROUP B : 1 stage, i = 3 - 4 - 5 - 7 - 10............................................2 stages, i = 12 - 15 - 16 - 20 - 21 - 25 - 28 - 35 - 40 - 49 - 50 - 70 - 100
Please inquire for any ratio not shown.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
9
MNT LINE
• Heavy-duty servo grade. Unsurpassed in having the
construction features that enable your machine to
perform with excellence.
• Backlash of 10 or 5 arc-mins. One (1) arc-min max
available on many sizes. Backlash spec. holds for
rated life.
• Deep case hardened input pinion and satellite gears
are finish ground to AGMA 12-14 quality levels.
Provide endurance and smooth, quiet, power
transfer. Permit highest motor input speeds.
• Oil lubrication (except for smallest size) for best heat
transfer and mechanical efficiency.
• Precise and easy assembly to your motor. The input
pinion is mounted in a “captured” ball-bearing to
self locate on the motor shaft and assist low sound
level. A two-screw balanced coupling grips the motor
shaft.
• Except for the gearhead input housing and shaft
seals, all parts are steel. Therefore thermal expansion of all components is uniform to ensure quiet
performance and reliability.
• Torsionally stiff design with large diameter output
shafts including “unibloc” (single piece of steel)
planet gear carrier. Smooth output shaft is standard.
Metric keyway supplied no charge when requested.
• Output shaft rotates in large, precisely preloaded,
angular contact bearings. These contribute to rigidity and provide high radial and axial load capability.
• Planet gears are supported on each side (not
cantilevered) and rotate on needle bearings.
• Integral ring gear is accurately cut in the steel
gearhead housing, contributing to quietness and
reliability.
• Emergency stop capability - conservative load
ratings and the robust construction allow for
infrequent “emergency stop” loads.
• Gearheads available for “low temperature” or “wash
down” environments.
• Life rating of 15,000 hours at rated load & operating
conditions.
• 6 sizes cataloged : 2.56-8.27 inches (65-210 mm)
square.
• Stainless steel gearheads available (MSS). Please
contact us.
10
The torque values shown for each size are maximums for
their higher ratios – for lower ratios, torque ratings may be
50-90% less – for specific torque ratings vs. ratio, see our
detailed Characteristic (data) sheets for chosen sizes. The
Characteristics/Data sheets also contain additional data on
reflected inertia, radial and axial loads, etc. Data sheets can
be emailed or faxed upon request.
GEARHEAD DIMENSIONS
H
G
B
E
F
E’
øD
A
C
ØA
ØB
INPUT VIEW
K DIN 332 D
L
OUTPUT VIEW
C
ØD
E
E’
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
MNT 065
60j6
(2.362)
75
(2.953)
5,5
(0.217)
16j6
(0.630)
48
(1.89)
28
(1.10)
MNT 080
70j6
(2.756)
85
(3.346)
7
(0.276)
22j6
(0.866)
56
(2.20)
36
(1.42)
MNT 115
95j6
(3.740)
130
(5.118)
9
(0.354)
32j6
(1.260)
88
(3.46)
58
(2.28)
MNT 140
130j6
(5.118)
165
(6.496)
11
(0.433)
40j6
(1.575)
112
(4.41)
82
(3.23)
MNT 180
160g6
(6.299)
215
(8.465)
13
(0.512)
55j6
(2.165)
112
(4.41)
82
(3.23)
MNT 210
180g6
(7.087)
250
(9.842)
17
(0.669)
75k6
(2.953)
143
(5.63)
105
(4.13)
G1)
mm
84-107
120-192
130-210
160-235
230-360
260-390
MNT 065
MNT 080
MNT 115
MNT 140
MNT 180
MNT 210
K
(in)
(3.31-4.21)
(4.72-7.48)
(5.12-8.27)
(6.30-9.25)
(9.05-14.17)
(10.24-15.35)
M5
M8
M12
M16
M20
M20
H
mm
65
83
115
140
180
210
L
(in)
(2.56)
(3.27)
(4.53)
(5.51)
(7.09)
(8.27)
mm
6
7
10
12
15
17
F
(in)
(0.24)
(0.28)
(0.39)
(0.47)
(0.59)
(0.567)
mm
18
18
28
27
27
35
(in)
(0.71)
(0.71)
(1.10)
(1.06)
(1.06)
(1.38)
MNT 180
MNT 210
MNT
1. Depends upon No. of gear stages and motor dimensions.
PERFORMANCE DATA
MNT 065
Input speed - Rated/Max
rpm
MNT 080
MNT 115
MNT 140
4000/6000
2000/4000
Rated Output Torque 1)
Nm/Lb.in
35/310
85/755
270/2350
450/3950
750/6640
1000/8850
Accel Output Torque
Nm/Lb.in
45/400
150/1330
400/3550
600/5310
900/7965
1900/16815
1)
Gear ratio
(see i = below)
i
Group A
Group B
Efficiency
(1 stage/2 stages/3 stages)
%
96/91
96/91/86*
arc-mins
15 or 5
2)
Maximum Backlash
10 or 5 or 1
Rated Life 3)
h
15000
Operating Temperature Range
°C
-20/+95
°F
-4/+203
Sound level
dB (A)
≤ 66
≤ 66
≤ 68
6 or 3 or 1
≤ 68
≤ 68
-
1) S5 Duty service 2) Gearhead efficiency at full load. 3) At rated input speed and rated output torque.
RATIO GROUP A : 1stage, i = 3 - 4 - 5 - 7 - 10 .....................................2 stages, i = 16 - 20 - 25 - 35 - 50 - 70 - 100
RATIO GROUP B : 1 stage, i = 3 - 4 - 5 - 7 - 10 .....................................2 stages, i = 16 - 20 - 25 - 35 - 50 - 70 - 100 ...........................3 stages*, i = 64 - 80 - 100 - 125 - 175
Please inquire for any ratio not shown.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
* Please contact us
11
MRA LINE
• Heavy-duty servo grade right-angle series. An
output stage with a relatively large bevel gear set is
integrated to our unsurpassed MNT all-planetary
family.
• Output backlash of 15, 10 or 5 arc-mins max. One
(1) arc-min max available.
• Planetary input stages are hardened and ground,
slower speed right-angle has cut and hardened
gears.
• All gearhead housings are steel - important for
rigidity and uniform thermal expansion.
• Planetary in-line stages are oil lubricated. Bevel gear
output stage cavity is filled with metal adhering
grease.
• The distance from the face-mounting surface to the
motor centerline is short regardless of gear ratio.
This allows the motor-gearhead assembly to hug
the machine frame.
• Large, well-spaced angular contact bearings on
the large diameter output shaft provide torsional stiffness and high axial and radial load
capability. Smooth shaft is standard – keyway
available upon request.
• Double output shafts or hollow shaft versions
available on special order.
• Readily mountable to customer specified
motors with metric face or NEMA 23, 34 or 42
face dimensions.
• Standard ratios from 3/1 to 175/1. Special
ratios available.
• Life rating of 10,000 hours. Increasable with
lubricant change.
• Five sizes cataloged : 2.75 – 7.08 inches (70 – 180
mm) square. Larger sizes available.
• Stainless steal gearheads available (MRS). Please
contact us.
12
The torque values shown for each size
are maximums for their higher ratios
– for lower ratios, torque ratings may
be 50-90% less – for specific torque
ratings vs. ratio, see our detailed
Characteristic (data) sheets for chosen
sizes. The Characteristics/Data sheets
also contain additional data on reflected
inertia, radial and axial loads, etc. Data
sheets can be emailed or faxed upon
request.
GEARHEAD DIMENSIONS
J
L
I
øB
H
øA
øD
C
K
F
G
E
SIDE VIEW
ØA
MRA 065
MRA 080
MRA 115
MRA 140
MRA 180
mm
60j6
80j6
110j6
130j6
160j6
ØB
(in)
(2.362)
(3.150)
(4.331)
(5.118)
(6.299)
mm
75
100
130
165
215
G 1)
MRA 065
MRA 080
MRA 115
MRA 140
MRA 180
mm
174 - 196,5
220 - 290
278 - 361
380 - 465
465 - 595
C
(in)
(2.953)
(3.937)
(5.118)
(6.496)
(8.465)
I
(in)
(6.85-7.74)
(8.66-11.42)
(10.94-14.21)
(14.96-18.31)
(18.31-23.42)
mm
49,5
59
77,5
100
114
OUTPUT VIEW
mm
5,5
6,5
9
11
13
ØD
(in)
(0.217)
(0.256)
(0.354)
(0.433)
(0.512)
mm
16j6
20j6
24j6
40j6
55j6
K
(in)
(1.95)
(2.32)
(3.05)
(3.94)
(4.49)
E
(in)
(0.630)
(0.787)
(0.945)
(1.575)
(2.165)
mm
30
40
50
80
96
H
M5
M6
M8
M16
M20
mm
70
83
115
140
180
J
(in)
(1.18)
(1.57)
(1.97)
(3.15)
(3.78)
mm
125
137
182
230
278
L
(in)
(2.75)
(3.27)
(4.53)
(5.51)
(7.08)
(in)
(4.92)
(5.39)
(7.17)
(9.06)
(10.94)
F
mm
10
7
10
15
20
(in)
(0.39)
(0.28)
(0.39)
(0.59)
(0.79)
mm
3,5
3
3,5
3,5
5
(in)
(0.14)
(0.12)
(0.14)
(0.14)
(0.19)
1. Depends upon No. of gear stages and motor dimensions.
Input speed - Rated/Max
Rated Output Torque
Accel Output Torque 1)
Gear ratio (see i = below)
Efficiency 2) (1 stage/2 stages/3 stages)
Maximum Backlash
Rated Life 3)
Operating Temperature Range
Sound level
rpm
Nm/Lb.in
Nm/Lb.in
i
%
arc-mins
h
°C
°F
dB (A)
MRA 065
MRA 080
17/150
33/290
Group A
96/91
15 or 5
85/755
150/1330
≤66
MRA
PERFORMANCE DATA
MRA 115
MRA 140
MRA 180
4000/6000
180/1590
250/2213
230/2036
400/3540
2000/4000
350/3048
600/5310
Group B
96/91/86*
10 or 5 or 2
15000
-20/+95
-4/+203
≤68
≤70
1) S5 Duty service 2) Gearhead efficiency at full load. 3) At rated input speed and rated output torque.
RATIO GROUP A : 1stage, i = 3 - 4 - 5 - 7 - 10 ...................2 stages, i = 16 - 20 - 25 - 35 - 50 - 70 - 100
RATIO GROUP B : 1stage, i = 3 - 4 - 5 - 7 - 10 ...................2 stages, i = 16 - 20 - 25 - 35 - 50 - 70 - 100 .....................3 stages*, i = 64 - 80 - 100 - 125 - 175
Please inquire for any ratio not shown.
* Please contact us
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
13
BDB LINE
• Unique gearhead family dedicated to servo
applications requiring compactness and high torque up to 10,000 Nm (88,495 Lb-in.) continuous.
• Hyper Torque version available in the largest six of
seven sizes
• Rotating flange (shaft-less) design – eliminates
torsional deflection of relatively long and thin output
shafts. Allows omission of conventional couplings.
Possible to create versions with fixed output face and
rotating outer case.
• Backlash of 5, 3 arc-mins. One (1) arc-min available
on larger sizes.
• Excellent for applications requiring very high
torsional stiffness. Mount to servo motors, hydraulic
motors, or other devices.
• Precision ground, oil lubricated, all planetary
gearing assures quiet and smooth power transmission
with long (30,000 hours) gear life.
• Standard ratios from 4 to 220/1
• Flange dimensions are to DIN norms. Internal and
external pilots provide for centering at the output.
An unthreaded hole in the flange provides for
indexing. Multiple other thread holes offer
flexibility for attachment of driven components.
• Excellent capacity to handle “emergency
stops”.
14
The torque values shown for each size
are maximums for their higher ratios
– for lower ratios, torque ratings may
be 50-90% less – for specific torque
ratings vs. ratio, see our detailed
Characteristic (data) sheets for chosen
sizes. The Characteristics/Data sheets
also contain additional data on reflected
inertia, radial and axial loads, etc. Data
sheets can be emailed or faxed upon
request.
GEARHEAD DIMENSIONS
ØH
E
G
IxK
F
E’
D
A
MxP
ØJ
BDB 085
BDB 120
BDB 145
BDB 180
BDB 250
BDB 300
BDB 330
L
ØA
mm
(in)
64h7 (2.520)
90h7 (2.543)
110h7 (4.331)
140h7 (5.512)
200h7 (7.874)
255h7 (10.039)
285h7 (11.220)
ØB
mm
79
109
135
168
233
280
310
F
BDB 085
BDB 120
BDB 145
BDB 180
BDB 250
BDB 300
BDB 330
mm
7
10
10
14
15
20
20
(in)
(3.110)
(4.291)
(5.315)
(6.614)
(9.173)
(11.024)
(12.205)
ØH
ØC
mm
(in)
mm
86 (3.386) 8 Holes Ø4,5
118 (4.646) 8 Holes Ø5,5
145 (5.709) 8 Holes Ø5,5
180 (7.087) 12 Holes Ø6,5
247 (9.724) 12 Holes Ø9
300 (11.811) 16 Holes Ø13,5
330 (12.992) 16 Holes Ø13,5
G 1)
(in)
(0.276)
(0.394)
(0.394)
(0.551)
(0.591)
(0.787)
(0.797)
INPUT VIEW
D
mm
40h7
63h7
80h7
100h7
160h7
180h7
200h7
I Depth K
mm
(in)
50 - 75
(1.968-2.953)
7 Holes M5 Deep 7
75 - 115 (2.952-4.527) 7 Holes M6 Deep 10
75 - 113 (3.031-4.449) 11 Holes M6 Deep12
110 - 155 (4.331-6.102) 11 Holes M8 Deep15
136 - 161 (5.354-6.339) 11 Holes M10 Deep 20
190 - 245 (7.480-9.646) 11 Holes M16 Deep 25
190 - 290 (7.480-11.417) 11 Holes M20 Deep 30
E
(in)
(1.575)
(2.480)
(3.150)
(3.937)
(6.299)
(7.087)
(7.874)
mm
19,5
30
29
38
50
66
75
ØJ
mm
31,5
50
63
80
125
140
160
E’
(in)
(0.768)
(1.181)
(1.142)
(1.496)
(1.968)
(2.598)
(2.952)
L
(in)
(1.240)
(1.968)
(2.480)
(3.150)
(4.921)
(5.512)
(6.299)
mm
4
8
8
10
12
18
20
(in)
(0.157)
(0.315)
(0.315)
(0.394)
(0.472)
(0.709)
(0.787)
mm
4
6
6
6
8
12
15
(in)
(0.157)
(0.236)
(0.236)
(0.236)
(0.315)
(0.472)
(0.590)
M Depth P
mm
Ø 5H7 Deep 6
Ø 6H7 Deep7
Ø 6H7 Deep 7
Ø 8H7 Deep 7
Ø 10H7 Deep 10
Ø 12H7 Deep 12
Ø 14H7 Deep 14
BDB
C
B
OUTPUT VIEW
1. Depends upon No. of gear stages and motor dimensions.
PERFORMANCE DATA
BDB 085
Input speed - Rated/Max
Rated Output Torque 1)
Accel Output Torque 1)
Accel Output "hyper torque" 1)
Gear ratio
Efficiency 2) (1 stage/2 stages/3 stages)
Maximum Backlash
Rated Life 3)
Operating Temperature Range
Sound level
rpm
Nm/Lb.in
Nm/Lb.in
Nm/Lb.in
i
%
arc-mins
h
°C
°F
dB (A)
3000/6000
25/221
40/354
Group A
96 / 91
5 or 3
BDB 120
BDB 145
85/752
120/1062
225/1991
300/2655
400/3540
550/4867
≤63
≤64
BDB 180
BDB 250
BDB 300
BDB 330
2000/4000
800/7080 1230/10885 3000/26549 5350/47345
1000/8850 1600/14159 4000/35398 7200/63717
1500/13274 3000/26549 6000/53098 10000/88495
Group B
96/91/86
5 or 3 or 1
15 000
- 20/+ 95
- 4/+ 203
≤65
≤66
≤68
1) S5 Duty service 2) Gearhead efficiency at full load. 3) At rated input speed and rated output torque.
RATIO GROUP A : 1 stage, i = 4 - 5,5 - 7.................................................2 stages, i = 16 - 22 - 28 - 31
RATIO GROUP B : same as group A, plus 3 stages Hypertorque version : i = 40 - 60 - 66 - 88 - 91 - 110 - 154 - 220
Please inquire for any ratio not shown.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
15
THE MIJNO ADVANTAGES
INTEGRATED POWER TRANSLATION PACKAGES
MIJNO offers a complete “package” of gearheadspinions-racks. We can securely fasten the rack pinion
on the gearhead shaft upon request. Customized holes
in the rack for mounting in your machine can be
supplied.
The particularly quiet and precise running of these sets
is ensured by:
• The use of precision ground teeth in our gearheads
according to ISO class 4 to 5 accuracy.
• Rack pinions with ground teeth including a proprietary modification of the tooth profile called
“ROTAXE™”. This improves smoothness and reduces
wear.
• Manufacturing of matching racks with straight or
helical teeth, ground or not, according to specification MIJ-12024. This modern tooth profile was especially developed for high speed applications.
MIJNO™ also offers standard “rack &
pinion” sets. Request our racks & pinions
catalogue.
16
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
THE MIJNO ADVANTAGES
SPECIAL PURPOSE GEARHEADS
Mijno stocks, or offers in short lead-time, several
families of gearheads that are interchangeable with
competitive gearheads. These gearhead families have
been designed to mount to a large variety of servo
motor brands and sizes. Most Motion Control Engineers
consider them as “standard components” that
accommodate a large variety of applications.
However, there are many applications where a “special
purpose gearhead”, specifically optimized for a single
application, is desired. Mijno Precision Gearing offers
special purpose gearheads according to customer
needs. We can design and manufacture gearheads
from a bare statement of specifications, or according to
customer drawings. Large quantities are not required
– we invite small and moderate annual quantity
applications.
THE MIJNO ADVANTAGES
In terms of gear technology, we can design and
manufacture planetary, bevel or conical, worm, and
parallel-shaft gearheads. The constant objective of our
Design Engineers is cost competitiveness and technical
optimization of solutions for customer requirements.
Stainless steel gearheads are available for washdown
and food processing plants. Our SS lines are named
MSS & MRS (please contact MIJNO for more information and leaflets) (See page 10 to 13).
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
17
LUBRICATION
Gearhead Types lubricated with grease :
MRL 200 - 300
MNA 017 - 023 - 034 - 042
MRP 050 - 070 - 090 - 120 - 155
MNT 065
MRA 065
The above gearheads are delivered ready to mount
onto your motor, lubricated with grease specifically
chosen to ensure maximum performance. MIJNO
recommends a KLÜBER (brand) grease, which provides a nominal lifetime of 15,000 hours without
grease change.
Gearhead Types lubricated with oil :
MNT 080 - 115 - 140 - 180 - 210 - 240
MRA 080 - 115 - 140 - 180
(right angle section has grease)
BDB 085 - 120 - 145 - 180 - 250 - 300 - 330
Application formulas
Operating formulas
N2 = N1 / i
T2 = T1 x i x µ
J2 / j2 = J1
Input speed (motor)..................N1....................tr/min [rpm]
Output speed (gearbox)............N2....................tr/min [rpm]
Input torque (motor).................T1 .....................N-m [Lbf-in]
Output torque (gearbox) ...........T2 .....................N-m [Lbf-in]
Inertia .......................................J ..............kg-m2[Lbf-in-sec2]
Efficiency ...................................µ
Ratio..........................................i
Application Limit Formulas
N1 < N rated
T2 load < T2 max rated
T1 max allowable = T2 max rated / (i x µ)
Also T1 max allowable < T1 max rated
Conversions
1 N-m
rpm = min-1
1 Hp
1 kg
1N
1 Lbf-in-sec2
18
=
=
=
=
=
=
1 Lbf-in x (0.113)
tr/min
0.746 kW
1Lb x 2.23)
1 Lb / (4.448)
0.113 kg-m2
The above gearheads are delivered ready to mount
onto your motor, lubricated with a KLÜBER (brand)
Type GH6 - 80 - 100 -150 or - 220 oil, depending
upon gearhead size. Gearheads are oil lubricated for
horizontal mounting position unless otherwise
specified. Also on request, we can lubricate your
gearhead for multi-position mounting.
This synthetic oil has been selected to optimally
lubricate the gears, bearings and shaft seals. The oil
contemplates a lifetime of 15000 hours. VITON™
seals are employed to resist heat and provide long
life while preventing leakage.
General lubrication vs. life information :
The nominal lifetime of our gearheads generally
depends on the duty cycles of the application. For an
operating temperature above 120°C, a special
lubrification is recommended.
For usual environmental conditions (extreme temperatures, vacuum conditions, nuclear environment,
etc), please contact us.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
WHY CHOOSE MIJNO™
We Design And Manufacture Quality Into Our Gearheads
MIJNO PRECISION GEARING Provides...
Choice
A wide selection of gearhead families targeted to your applications
Customer service
Our second nature
Delivery Times
Quick and on-time
Easy assembly for you
LUBRIFICATION AND WHY CHOOSE MIJNO™
Precise and quick assembly onto your motor. Assembly instructions
are available for all types.
Flexibility
A wide choice of adapter flanges allows MIJNO to satisfy each
customer’s requirement. We easily adapt our standard products
according to your needs.
Visit us on the web
www.mijno.com
Quality
Contact us for your
Racks & Pinions catalog
R A C K S
&
S
P I N I O N
All components are quality controlled before assembly. All
completed gearheads are inspected and tested before packaging.
Backlash of all product families is delivered within specifications.
Performance is warranted for rated life under standard operating
conditions.
G
C A T A L O
Advanced Technology
Servo grade gearheads feature hardened and ground gearing, plus
oil lubrication for endurance, smooth power transmission and quietness. Satellite gears are double supported to preclude internal
deflection. Housings are all steel with large shafts for rigidity, torsional stiffness, ans uniform thermal expansion.
Reliability
Conservative load ratings for trouble free performance.
Technical assistance
CATALOG -M 205 A
Our Application Engineers have complete technical data and experience to help you choose and apply the best gearhead for you task.
The Home Office design staff responds quickly when support is
requested.
France Phone : (33) 04 77 42 82 05 - Fax : (33) 04 77 37 74 44 - e-mail : mijno@mijno.com - www.mijno.com
19