A-14
MDriveAC Plus Microstepping Hardware - Revision R121707
Relevant to Firmware Version 3.0.02
Figure B.7: Planetary Gearbox Specifications for MDrive34AC Plus2
Planetary Gearbox for MDrive34AC Plus2
MDrive34AC Plus
2
Planetary Gearbox Parameters
Permitted
Output Torque
(oz-in/Nm)
Gearbox
Efficiency
Maximum
Backlash
Output Side with Ball Bearing
Maximum Load
(lb-force/N)
Weight
(oz/g)
Radial
Axial
Gearbox
with Flange
1-STAGE
2832/20.0
0.80
1.0°
90/400
18/80
64.4/1827
66.7/1890
2-STAGE
8496/60.0
0.75
1.5°
135/600
27/120
89.5/2538
92.6/2625
3-STAGE
16992/120.0
0.70
2.0°
225/1000
45/200
92.6/2625
118.5/3360
Table B.2: Planetary Gearbox Specifications – PM81
PM81 Gearbox Ratios and Part Numbers
Planetary
Gearbox
Ratio
(Rounded)
Part
Number
Planetary
Gearbox
Ratio
(Rounded)
Part
Number
1-Stage
3.71:1
G1A1
3-Stage
50.89:1
G1B5
1-Stage
5.18:1
G1A2
3-Stage
58.86:1
G1B6
1-Stage
6.75:1
G1A3
3-Stage
68.07:1
G1B7
3-Stage
71.16:1
G1B8
2-Stage
13.73:1
G1A4
3-Stage
78.72:1
G1B9
2-Stage
15.88:1
G1A5
3-Stage
92.70:1
G1C1
2-Stage
18.37:1
G1A6
3-Stage
95.18:1
G1C2
2-Stage
19.20:1
G1A7
3-Stage
99.51:1
G1C3
2-Stage
22.21:1
G1A8
3-Stage
107.21:1
G1C4
2-Stage
25.01:1
G1A9
3-Stage
115.08:1
G1C5
2-Stage
26.85:1
G1B1
3-Stage
123.98:1
G1C6
2-Stage
28.93:1
G1B2
3-Stage
129.62:1
G1C7
2-Stage
34.98:1
G1B3
3-Stage
139.14:1
G1C8
2-Stage
45.56:1
G1B4
3-Stage
149.90:1
G1C9
3-Stage
168.85:1
G1D1
3-Stage
181.25:1
G1D2
3-Stage
195.27:1
G1D3
3-Stage
236.10:1
G1D4
3-Stage
307.55:1
G1D5
Table B.3: Planetary Gearbox Ratios and Part Numbers
Key DIN 6885-A-6x6x28mm
Ctrg. DIN 332-D M6x16
4x Ø 0.217 (Ø5.5) Hole
†
4x Ø 0.217 (Ø5.5) Hole
†
0.197*
(5.0)
K1 ±0.02 (±0.5)
Ø 2.56*
(Ø 65.0)
1.575
(40.0)
Ø 3.189 (Ø 81.0)
Ø 1.969 +0.0006/-0.0004* (Ø 50.0 +0.015/-0.010) or Ø 2.874 +0/-0.0012
†
(Ø 73.0 +0/-0.030)
Ø 0.748 +0/-0.0008 (Ø 19.0 +0/-0.021)
0.394
†
(10.0)
MDrive34Plus
3.386 SQ. (86.0 SQ.)
*Gearbox without Flange
†Gearbox with Flange
1.929*
(49.0)
or
1.811
†
(46.0)
M6 x 0.472 (12.0) Deep
*
0.079
†
(2.0)
or
2.739 SQ.
†
(69.58 SQ.)
Dimensions in inches (mm)
Stages
K1
(Gearbox)
K1
(NEMA Flange)
1-Stage
4.315 (109.6)
4.433 (112.6)
2-Stage
5.169 (131.3)
5.287 (134.3)
3-Stage
6.024 (153.0)
6.142 (156.0)