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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
102
NH Series
Dimensions
Styles: BLMQ, BLM, BL
STYLE BLMQ, BLM, BL DIMENSIONS (Inches)
H
T
U
Input
Output
Size
A
B
C
CD
D
F
G
I
J
K
L
LL
M
N
O
+0.000
+0.000
Key
L
Key
Tap Size
Depth
-0.0015
-0.0015
NH818
2.56
4.50
5.44 1.75
2.06
1.88
0.94 5/16-18 UNC .63
3.24
3.75
1.88
4.45 3.60
1.76
4.75 2.94 1.000 0.625 3/16 X 1.38
1/4 X 1.75
NH824
2.94
5.25
6.88 2.38
2.69
2.13
1.06
3/8-16 UNC .69
3.77
4.00
2.00
5.51 3.78
2.38
4.88 2.91 1.000 0.750 3/16 X 1.63
1/4 X 1.75
IEC B5 & B3/B5 METRIC DIMENSIONS (Inches)
Y
NEMA DIMENSIONS (Inches)
LM
L1
LQ
LQ1
RQ
Size
48CZ
56C/
180TC/ 250TC
48CZ/
180TC 210TC 250TC
48CZ/
180TC 210TC
250TC
140TC
210TC
56C/140TC
56C/140TC
NH818
6.26
6.70
N/A N/A
4.09
N/A
N/A
N/A
3.59
N/A N/A
N/A
NH824
N/A
7.76
8.76 N/A
4.63
Q
5.06
N/A
N/A
4.09
Q
4.56 N/A
N/A
Frame
AJ
AK
BD
BE
BE1 Bore Keyway
X
BF
E
Dia.
48CZ
3.75 3.00 4.36 0.38 N/A 0.500 1/8 X 1/16 0.28
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
LQ1
RQ
Size
D63D
D71D
D80D D90D D100LD/
D132D
D63D
D71D
D80D
D90D D100LD/ D132D
D112MD
D112MD
NH818
3.25
3.28
3.52
N/A
N/A
N/A
2.95
2.97
3.21
N/A
N/A
N/A
NH824
N/A
3.72
4.34
N/A
N/A
N/A
N/A
3.46
3.71
N/A
N/A
N/A
Frame
AJ
AK
BD
BE
Bore Keyway
X
BF TAP
OD
Dia.
D63D
115 95
117
10
11
4 X 2
M8 X 1.25 131
D71D
130 110 132
11
14
5 X 2.5 M8 X 1.25 146
D80D
165 130 165
15
19
6 X 3
M10 X 1.50 184
X
Keyway width by depth
Q
48CZ not available
Y
Metric IEC B5 input flange options are available only on quill input styles.
L
Style BL and BLM only.
For safety, purchaser or user should provide protective guards over
shaft extensions and any couplings, sheaves and belts, sprockets and
chains, etc., mounted thereon.
WARNING
NEMA DIMENSIONS (Inches)
IEC B5 & B3/B5 METRIC DIMENSIONS (MM)
Grove Gear OE Series
Grove Gear IRONMAN
NH Series
ULF
BLMQ
ULFC
BLM
UL
BL
Refer to page 18 for complete interchange guide for original Grove Gear OE Series products.
Features
+
No external parts to align, assemble, or adjust for easy installation.
+
Pre-set to your torque limit for reduced installation time.
+
Clutch slips automatically to reduce costly downtime and shock damage.
+
When overload is removed the reducer returns to normal operation
without having to reset the clutch.
+
Internal slip clutch runs in oil bath for longer life, rust prevention and
less maintenance.
+
Lifetime torque setting eliminates the need for frequent adjustments.
+
Easily adjusted in the field, eliminating the need for factory re-calibration.
GROVE GEAR OE SERIES INTERCHANGE GUIDE
TORQUE LIMITING DESIGN
CAPACITY RATINGS
NH818
NH824
Max.
Max.
Output Input Output
Output
Input Output
Output
Ratings
RPM
H.P.
H.P.
Torque
H.P.
H.P.
To
rque
5
350
1.70
1.56
281
3.89
3.63
653
7 1/2
233
1.67
1.52
407
3.47
3.20
863
10
175
1.37
1.23
442
3.08
2.81
1011
15
117
1.03
.876
473
2.30
2.03
1095
20
87.5
.814
.677
487
1.83
1.56
1121
25
70.0
.665
.537
483
1.51
1.25
1124
30
58.3
.597
.451
487
1.32
1.05
1133
40
43.8
.469
.338
486
1.04
.778
1121
50
35.0
.377
.258
465
.847
.602
1084
60
29.2
.317
.204
442
.674
.466
1007
80
21.9
.208
.124
356
.455
.288
830
100
17.5
.141
.077
277
.307
.180
468
NOTE: All ratings based on 1750 RPM input
speed with service factor of 1.0.
Motor Mounting Dimensions