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ELECTRA-GEAR
Single Reduction
Worm Gear Reducers
Double Reduction
Worm - Worm Gear Reducers
Double Reduction
Helical - Worm Gear Reducers
WASHGUARD
®
Reducers
and GEAR+MOTOR™
Ratio Multipliers
Accessories and
Additional
Capabilities
www.grovegear.com179
EL Series
Dimensions
Styles: DFRMQ, DFRM, DFR
STYLE DFRMQ, DFRM, DFR DIMENSIONS (Inches)
Size
A
BB
BC
BH
B1
C
CD CE
C1
D1
D2
I
L
M
N
O*
EL818
3.50 1.27 5.94 7.79 2.48 7.00 1.75 1.33
4.66
1.72 2.31
3.03
3.82
1.87
4.39
1.85
EL821
3.91 1.51 6.32 8.16 2.76 7.63 2.06 1.33
4.66
1.72 2.63
3.40
3.82
1.87
4.68
2.09
EL824
4.06 1.35 6.43 8.27
--
7.81 2.38 1.33
4.66
1.72 2.50
3.61
3.82
1.87
5.14
2.46
EL826
4.84 1.35 6.99 8.83 4.21 8.81 2.63 1.33
4.66
1.72 3.25
4.17
3.82
1.87
5.63
2.53
EL830
5.25 2.36 8.04 10.30 4.50 10.06 3.00 1.75
5.86
2.31 3.50
4.81
4.45
1.78
6.62
3.37
EL832
5.25 2.54 8.23 10.49 4.53 10.81 3.25 1.75
5.86
2.31 4.00
5.00
4.45
1.78
6.62
3.37
EL842
6.13 2.06 9.17 11.56 5.71 13.00 4.25 2.06
6.88
2.63 4.50
6.15
4.82
1.76
8.12
4.22
EL852
7.19 1.18 11.57 14.47 7.82 13.75 5.25 2.63
8.00
3.25 4.25
7.55
6.07
2.45
9.06
4.50
EL860
7.00 0.25 12.63 15.69
--
14.25 6.00 3.25
10.50 3.50 5.00
7.88
6.75
2.31
10.75
5.25
Motor Mounting Dimensions
NEMA DIMENSIONS (Inches)
LM
LM1
L1
LQ
LQ1
RQ
Size 56C/140TC 180TC / 210TC 56C/140TC 180TC / 210TC 56C/140TC 180TC / 210TC 56C/140TC 180TC / 210TC
EL818
6.07
--
3.82
--
3.79
--
3.09
--
EL821
6.07
--
3.82
--
3.79
--
3.09
--
EL824
6.07
--
3.82
--
3.79
--
3.09
--
EL826
6.07
--
3.82
--
3.79
--
3.09
--
EL830
5.88
--
3.64
--
4.42
--
3.59
--
EL832
5.88
--
3.64
--
4.42
--
3.59
--
EL842
6.26
--
4.00
--
4.79
--
4.06
--
EL852
7.04
7.86
4.88
4.88
5.33
5.33
4.82
4.82
EL860
7.86
8.50
5.56
5.56
6.16
6.16
5.51
5.51
Frame AJ AK BD BE BE1 Bore Keyway
u
BF
Dia.
56C
5.88 4.50 6.50 0.38 N/A 0.625 3/16 X 3/32 0.41
140TC
5.88 4.50 6.50 0.38 N/A 0.875 3/16 X 3/32 0.41
180TC
7.25 8.50 9.00 N/A 0.50 1.125 1/4 X 1/8 0.53
210TC
7.25 8.50 9.00 N/A 0.50 1.375 5/16 X 5/32 0.53
NEMA DIMENSIONS (Inches)
T
U
Input Key
Input Key
Output
Size
R
V
X
XB
Y
Z
+0.000
+0.000
(Style DF only)
i
(Style DFM only)
i
Key
-0.0015
-0.0015
EL818
3.53 0.38
3.13
-
4.00
0.34
0.750
0.500
1/8 x 1.00
1/8 x 1.00
3/16 X 1.38
EL821
4.25 0.50
6.88
6.00 6.49
0.44
1.000
0.500
1/8 x 1.00
1/8 x 1.00
1/4 x 1.44
EL824
4.15 0.63
7.75
6.50 6.99
0.50
1.125
0.500
1/8 x 1.00
1/8 x 1.00
1/4 X 1.62
EL826
4.56 0.63
7.75
6.50 6.99
0.50
1.250
0.500
1/8 x 1.00
1/8 x 1.00
1/4 X 1.62
EL830
5.75 0.81
9.125-9.500
8.25 8.74
0.56
1.500
0.625
3/16 x 1.38
3/16 x .500
3/8 X 2.25
EL832
5.94 0.81
9.125-.9500
8.25 8.74
0.56
1.625
0.625
3/16 x 1.38
3/16 x .500
3/8 X 2.25
EL842
6.06 0.75
10.75
9.75 11.00
0.69
1.750
0.625
3/16 X 1.38
3/16 x .500
3/8 x 2.50
EL852
5.75 0.69
12.75
11.50 14.24
0.81
2.000
0.750
3/16 x 1.63
3/16 x .500
1/2 x 2.50
EL860
7.25 1.00
15.25
13.00 17.00
0.81
2.250
0.875
3/16 x 1.63
3/16 x .500
5/8 X 4.00
WARNING
* Applies to double output shaft
u
Keyway width by depth
i
Solid input shaft and C-faced coupling input reducers have different input shaft length and key.
For safety, purchaser or user should provide protective guards over shaft extensions and any couplings, sheaves
and belts, sprockets and chains, etc., mounted thereon.
INTEGRAL GEARMOTOR INPUTS AVAILABLE
— Contact Factory for price and availability.
ELECTRA-GEAR INTERCHANGE GUIDE
Convert Style DFR to motorized coupling input using kits shown on page 278.
Original Style
New Style
NOT A
DFRMQ
STANDARD CATALOGED
DFRM
OPTION
DFR
NOTE: New styles are not a direct replacement to orignal ring base.
EL SERIES MOUNTING DIMENSIONS
— EL Series mounting dimensions are the same as the original ELECTRA-GEAR
product with an option to match the industry standard dimensions of GR Series.
— See page 132 for GR Series dimensions.